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Replace a load with cheaper mov instruction when possible#83458
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ContributorAuthor
SwapnilGaikwad commentedMar 15, 2023
SuperPMI asmdiff show that the patch replaces following number of loads to movs Summary from SuperPMI diff: Overall (-64 bytes)
MinOpts (+0 bytes)
FullOpts (-64 bytes)
Example diffsbenchmarks.run.linux.arm64.checked.mch-12 (-0.49%) : 17542.dasm - System.Environment:ReadXdgDirectory(System.String,System.String,System.String):System.String@@ -238,9 +238,8 @@ G_M35333_IG02: ; bbWeight=1, gcVars=00000000000000000000200000820000 {V00 ; GC ptr vars +{V11} cbz x0, G_M35333_IG03 ldr w2, [x0, #0x08]- ldr w2, [x0, #0x08] cbnz w2, G_M35333_IG04-;; size=16 bbWeight=1 PerfScore 8.00+;; size=12 bbWeight=1 PerfScore 5.00 G_M35333_IG03: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref ; gcrRegs -[x0] movz x0, #0xD1FFAB1E@@ -262,9 +261,8 @@ G_M35333_IG03: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, by G_M35333_IG04: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref, isz cbz x19, G_M35333_IG05 ldr w2, [x19, #0x08]- ldr w2, [x19, #0x08] cbnz w2, G_M35333_IG06-;; size=16 bbWeight=1 PerfScore 8.00+;; size=12 bbWeight=1 PerfScore 5.00 G_M35333_IG05: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -287,9 +285,8 @@ G_M35333_IG06: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, by ; gcrRegs +[x1] cbz x1, G_M35333_IG07 ldr w2, [x1, #0x08]- ldr w2, [x1, #0x08] cbnz w2, G_M35333_IG08-;; size=20 bbWeight=1 PerfScore 10.00+;; size=16 bbWeight=1 PerfScore 7.00 G_M35333_IG07: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref ; gcrRegs -[x1] movz x0, #0xD1FFAB1E@@ -1150,7 +1147,7 @@ G_M35333_IG62: ; bbWeight=0, funclet epilog, nogc, extend ret lr ;; size=24 bbWeight=0 PerfScore 0.00-; Total bytes of code 2436, prolog size 68, PerfScore 3069.60, instruction count 609, allocated bytes for code 2436 (MethodHash=a8cb75fa) for method System.Environment:ReadXdgDirectory(System.String,System.String,System.String):System.String+; Total bytes of code 2424, prolog size 68, PerfScore 3059.40, instruction count 606, allocated bytes for code 2424 (MethodHash=a8cb75fa) for method System.Environment:ReadXdgDirectory(System.String,System.String,System.String):System.String ; ============================================================ Unwind Info:@@ -1161,7 +1158,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 461 (0x001cd) Actual length = 1844 (0x000734)+ Function Length : 458 (0x001ca) Actual length = 1832 (0x000728) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) +0 (0.00%) : 14082.dasm - MessagePack.Internal.ObjectSerializationInfo:CreateOrNull(System.Type,bool,bool,bool):MessagePack.Internal.ObjectSerializationInfo@@ -4050,7 +4050,7 @@ G_M29960_IG150: ; bbWeight=4, gcrefRegs=14980000 {x19 x20 x23 x26 x28}, b str wzr, [fp, #0xD1FFAB1E]// [V38 loc34] ldr x0, [fp, #0xD1FFAB1E]// [V12 loc8] ; gcrRegs +[x0]- ldr x2, [fp, #0xD1FFAB1E]// [V12 loc8]+ mov x2, x0 ; gcrRegs +[x2] ldr x2, [x2] ; gcrRegs -[x2]@@ -4067,7 +4067,7 @@ G_M29960_IG150: ; bbWeight=4, gcrefRegs=14980000 {x19 x20 x23 x26 x28}, b ; gcrRegs -[x0] cmp w0, #0 ble G_M29960_IG171-;; size=52 bbWeight=4 PerfScore 86.00+;; size=52 bbWeight=4 PerfScore 80.00 G_M29960_IG151: ; bbWeight=16, gcVars=0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000100000 {V10 V39}, gcrefRegs=14980004 {x2 x19 x20 x23 x26 x28}, byrefRegs=0000 {}, gcvars, byref, isz add x0, x2, #16 ; byrRegs +[x0]@@ -5624,7 +5624,7 @@ G_M29960_IG204: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref ret lr ;; size=28 bbWeight=0 PerfScore 0.00-; Total bytes of code 12136, prolog size 100, PerfScore 12153.60, instruction count 3034, allocated bytes for code 12136 (MethodHash=186e8af7) for method MessagePack.Internal.ObjectSerializationInfo:CreateOrNull(System.Type,bool,bool,bool):MessagePack.Internal.ObjectSerializationInfo+; Total bytes of code 12136, prolog size 100, PerfScore 12147.60, instruction count 3034, allocated bytes for code 12136 (MethodHash=186e8af7) for method MessagePack.Internal.ObjectSerializationInfo:CreateOrNull(System.Type,bool,bool,bool):MessagePack.Internal.ObjectSerializationInfo ; ============================================================ Unwind Info: +0 (0.00%) : 28674.dasm - Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.Lexer:QuickScanSyntaxToken():Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.SyntaxToken:this@@ -246,7 +246,7 @@ G_M28731_IG14: ; bbWeight=0.50, gcrefRegs=1080000 {x19 x24}, byrefRegs=00 ldr x27, [x24, #0x10] ; gcrRegs +[x27] ldr w26, [x24, #0x30]- ldr w0, [x24, #0x30]+ mov w0, w26 sub w24, w21, w0 ; gcrRegs -[x24] ldr x21, [x19, #0x58]@@ -292,7 +292,7 @@ G_M28731_IG14: ; bbWeight=0.50, gcrefRegs=1080000 {x19 x24}, byrefRegs=00 blr x6 ; gcrRegs -[x0-x1 x5 x27-x28] ; gcr arg pop 0-;; size=140 bbWeight=0.50 PerfScore 26.00+;; size=140 bbWeight=0.50 PerfScore 24.75 G_M28731_IG15: ; bbWeight=0.50, gcrefRegs=2000000 {x25}, byrefRegs=0000 {}, byref mov x0, x25 ; gcrRegs +[x0]@@ -338,7 +338,7 @@ G_M28731_IG19: ; bbWeight=0, gcVars=0000000000000000 {}, gcrefRegs=0000 { brk_unix #0 ;; size=8 bbWeight=0 PerfScore 0.00-; Total bytes of code 776, prolog size 32, PerfScore 347.97, instruction count 194, allocated bytes for code 776 (MethodHash=8e5a8fc4) for method Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.Lexer:QuickScanSyntaxToken():Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.SyntaxToken:this+; Total bytes of code 776, prolog size 32, PerfScore 346.72, instruction count 194, allocated bytes for code 776 (MethodHash=8e5a8fc4) for method Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.Lexer:QuickScanSyntaxToken():Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax.SyntaxToken:this ; ============================================================ Unwind Info: +0 (0.00%) : 29948.dasm - Microsoft.CodeAnalysis.CSharp.Binder:BindNamespaceOrTypeOrAliasSymbol(Microsoft.CodeAnalysis.CSharp.Syntax.ExpressionSyntax,Microsoft.CodeAnalysis.DiagnosticBag,Roslyn.Utilities.ConsList`1[Microsoft.CodeAnalysis.CSharp.Symbols.TypeSymbol],bool):Microsoft.CodeAnalysis.CSharp.Binder+NamespaceOrTypeOrAliasSymbolWithAnnotations:this@@ -1972,7 +1972,7 @@ G_M4799_IG72: ; bbWeight=0.50, gcrefRegs=1980000 {x19 x20 x23 x24}, byref ; gcrRegs -[x0] ldr x0, [fp, #0xD1FFAB1E]// [V322 tmp293] ; gcrRegs +[x0]- ldr x1, [fp, #0xD1FFAB1E]// [V322 tmp293]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -1981,7 +1981,7 @@ G_M4799_IG72: ; bbWeight=0.50, gcrefRegs=1980000 {x19 x20 x23 x24}, byref blr x1 mov x15, x0 ; gcrRegs +[x15]-;; size=28 bbWeight=0.50 PerfScore 7.25+;; size=28 bbWeight=0.50 PerfScore 6.50 G_M4799_IG73: ; bbWeight=0.50, gcrefRegs=1988000 {x15 x19 x20 x23 x24}, byrefRegs=200000 {x21}, byref ; gcrRegs -[x0] add x14, x20, #16@@ -3130,7 +3130,7 @@ G_M4799_IG114: ; bbWeight=0.50, gcrefRegs=7580000 {x19 x20 x22 x24 x25 x2 ; gcrRegs -[x0] ldr x0, [fp, #0xD1FFAB1E]// [V329 tmp300] ; gcrRegs +[x0]- ldr x1, [fp, #0xD1FFAB1E]// [V329 tmp300]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -3139,7 +3139,7 @@ G_M4799_IG114: ; bbWeight=0.50, gcrefRegs=7580000 {x19 x20 x22 x24 x25 x2 blr x1 mov x15, x0 ; gcrRegs +[x15]-;; size=28 bbWeight=0.50 PerfScore 7.25+;; size=28 bbWeight=0.50 PerfScore 6.50 G_M4799_IG115: ; bbWeight=0.50, gcrefRegs=7588000 {x15 x19 x20 x22 x24 x25 x26}, byrefRegs=200000 {x21}, byref ; gcrRegs -[x0] add x14, x26, #16@@ -3381,7 +3381,7 @@ RWD00 ddG_M4799_IG62 - G_M4799_IG02 ddG_M4799_IG96 - G_M4799_IG02-; Total bytes of code 7556, prolog size 80, PerfScore 1764.73, instruction count 1889, allocated bytes for code 7556 (MethodHash=44ebed40) for method Microsoft.CodeAnalysis.CSharp.Binder:BindNamespaceOrTypeOrAliasSymbol(Microsoft.CodeAnalysis.CSharp.Syntax.ExpressionSyntax,Microsoft.CodeAnalysis.DiagnosticBag,Roslyn.Utilities.ConsList`1[Microsoft.CodeAnalysis.CSharp.Symbols.TypeSymbol],bool):Microsoft.CodeAnalysis.CSharp.Binder+NamespaceOrTypeOrAliasSymbolWithAnnotations:this+; Total bytes of code 7556, prolog size 80, PerfScore 1763.23, instruction count 1889, allocated bytes for code 7556 (MethodHash=44ebed40) for method Microsoft.CodeAnalysis.CSharp.Binder:BindNamespaceOrTypeOrAliasSymbol(Microsoft.CodeAnalysis.CSharp.Syntax.ExpressionSyntax,Microsoft.CodeAnalysis.DiagnosticBag,Roslyn.Utilities.ConsList`1[Microsoft.CodeAnalysis.CSharp.Symbols.TypeSymbol],bool):Microsoft.CodeAnalysis.CSharp.Binder+NamespaceOrTypeOrAliasSymbolWithAnnotations:this ; ============================================================ Unwind Info: +0 (0.00%) : 10239.dasm - ProtoBuf.Meta.MetaType:ApplyDefaultBehaviourImpl(int):this@@ -747,10 +747,10 @@ G_M17167_IG26: ; bbWeight=2, gcVars=0000000000000000000000000001000000000 cbz w0, G_M17167_IG30 ldr x4, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x4]- ldr x0, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x0, x4 ; gcrRegs +[x0] cbz x0, G_M17167_IG29-;; size=52 bbWeight=2 PerfScore 33.00+;; size=52 bbWeight=2 PerfScore 30.00 G_M17167_IG27: ; bbWeight=1, gcVars=000000000000000000000000000100000000000000000000000080000000001A {V00 V13 V14 V20 V22}, gcrefRegs=3300010 {x4 x20 x21 x24 x25}, byrefRegs=0000 {}, gcvars, byref, isz ; gcrRegs -[x0] ; GC ptr vars -{V01 V04 V26 V38 V144}@@ -905,10 +905,10 @@ G_M17167_IG33: ; bbWeight=2, gcrefRegs=3300000 {x20 x21 x24 x25}, byrefRe G_M17167_IG34: ; bbWeight=2, gcrefRegs=3300001 {x0 x20 x21 x24 x25}, byrefRegs=0000 {}, byref, isz ldr x2, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x2]- ldr x1, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x1, x2 ; gcrRegs +[x1] cbz x1, G_M17167_IG36-;; size=12 bbWeight=2 PerfScore 10.00+;; size=12 bbWeight=2 PerfScore 7.00 G_M17167_IG35: ; bbWeight=1, gcrefRegs=3300005 {x0 x2 x20 x21 x24 x25}, byrefRegs=0000 {}, byref, isz ; gcrRegs -[x1] ldr x1, [fp, #0xD1FFAB1E]// [V21 loc19]@@ -1151,10 +1151,10 @@ G_M17167_IG53: ; bbWeight=2, gcrefRegs=3300000 {x20 x21 x24 x25}, byrefRe cbz w0, G_M17167_IG56 ldr x1, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x1]- ldr x3, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x3, x1 ; gcrRegs +[x3] cbz x3, G_M17167_IG55-;; size=52 bbWeight=2 PerfScore 33.00+;; size=52 bbWeight=2 PerfScore 30.00 G_M17167_IG54: ; bbWeight=1, gcVars=000000000000000000000000000100000000000000000000000000000000001A {V00 V14 V20 V22}, gcrefRegs=3300002 {x1 x20 x21 x24 x25}, byrefRegs=0000 {}, gcvars, byref, isz ; gcrRegs -[x3] ; GC ptr vars -{V13}@@ -1189,10 +1189,10 @@ G_M17167_IG56: ; bbWeight=2, gcVars=0000000000000000000000000001000000000 cbz w0, G_M17167_IG59 ldr x2, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x2]- ldr x0, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x0, x2 ; gcrRegs +[x0] cbz x0, G_M17167_IG58-;; size=52 bbWeight=2 PerfScore 33.00+;; size=52 bbWeight=2 PerfScore 30.00 G_M17167_IG57: ; bbWeight=1, gcVars=000000000000000000000000000000000000000000000000000080000000001A {V00 V13 V20 V22}, gcrefRegs=3300004 {x2 x20 x21 x24 x25}, byrefRegs=0000 {}, gcvars, byref, isz ; gcrRegs -[x0] ; GC ptr vars -{V14}@@ -1845,10 +1845,10 @@ G_M17167_IG99: ; bbWeight=2, gcVars=0000000000000000000000000001000000000 cbz w0, G_M17167_IG103 ldr x1, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x1]- ldr x0, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x0, x1 ; gcrRegs +[x0] cbz x0, G_M17167_IG102-;; size=52 bbWeight=2 PerfScore 33.00+;; size=52 bbWeight=2 PerfScore 30.00 G_M17167_IG100: ; bbWeight=1, gcrefRegs=3300002 {x1 x20 x21 x24 x25}, byrefRegs=0000 {}, byref, isz ; gcrRegs -[x0] ldr x0, [fp, #0xD1FFAB1E]// [V21 loc19]@@ -1907,10 +1907,10 @@ G_M17167_IG103: ; bbWeight=2, gcrefRegs=3300000 {x20 x21 x24 x25}, byrefR cbz w0, G_M17167_IG140 ldr x1, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x1]- ldr x0, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x0, x1 ; gcrRegs +[x0] cbz x0, G_M17167_IG106-;; size=52 bbWeight=2 PerfScore 33.00+;; size=52 bbWeight=2 PerfScore 30.00 G_M17167_IG104: ; bbWeight=1, gcrefRegs=3300002 {x1 x20 x21 x24 x25}, byrefRegs=0000 {}, byref, isz ; gcrRegs -[x0] ldr x0, [fp, #0xD1FFAB1E]// [V21 loc19]@@ -2005,10 +2005,10 @@ G_M17167_IG109: ; bbWeight=2, gcrefRegs=3300008 {x3 x20 x21 x24 x25}, byr cbz w0, G_M17167_IG139 ldr x4, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x4]- ldr x2, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x2, x4 ; gcrRegs +[x2] cbz x2, G_M17167_IG111-;; size=60 bbWeight=2 PerfScore 39.00+;; size=60 bbWeight=2 PerfScore 36.00 G_M17167_IG110: ; bbWeight=1, gcVars=000000000000000000000000000100000000000000000000000000000000001A {V00 V14 V20 V22}, gcrefRegs=3300010 {x4 x20 x21 x24 x25}, byrefRegs=0000 {}, gcvars, byref, isz ; gcrRegs -[x2] ; GC ptr vars -{V13}@@ -2083,10 +2083,10 @@ G_M17167_IG114: ; bbWeight=2, gcrefRegs=3300008 {x3 x20 x21 x24 x25}, byr cbz w0, G_M17167_IG138 ldr x4, [fp, #0xD1FFAB1E]// [V21 loc19] ; gcrRegs +[x4]- ldr x2, [fp, #0xD1FFAB1E]// [V21 loc19]+ mov x2, x4 ; gcrRegs +[x2] cbz x2, G_M17167_IG116-;; size=60 bbWeight=2 PerfScore 39.00+;; size=60 bbWeight=2 PerfScore 36.00 G_M17167_IG115: ; bbWeight=1, gcVars=000000000000000000000000000100000000000000000000000000000000001A {V00 V14 V20 V22}, gcrefRegs=3300010 {x4 x20 x21 x24 x25}, byrefRegs=0000 {}, gcvars, byref, isz ; gcrRegs -[x2] ; GC ptr vars -{V13}@@ -3574,7 +3574,7 @@ G_M17167_IG183: ; bbWeight=0, gcVars=000000000000000000000000000000000000 brk_unix #0 ;; size=160 bbWeight=0 PerfScore 0.00-; Total bytes of code 8140, prolog size 80, PerfScore 5526.50, instruction count 2035, allocated bytes for code 8140 (MethodHash=70dabcf0) for method ProtoBuf.Meta.MetaType:ApplyDefaultBehaviourImpl(int):this+; Total bytes of code 8140, prolog size 80, PerfScore 5502.50, instruction count 2035, allocated bytes for code 8140 (MethodHash=70dabcf0) for method ProtoBuf.Meta.MetaType:ApplyDefaultBehaviourImpl(int):this ; ============================================================ Unwind Info: +0 (0.00%) : 30080.dasm - Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol:NoteFieldDefinitions():this@@ -205,7 +205,7 @@ G_M17784_IG09: ; bbWeight=4, gcrefRegs=580000 {x19 x20 x22}, byrefRegs=00 G_M17784_IG10: ; bbWeight=2, gcrefRegs=580000 {x19 x20 x22}, byrefRegs=0000 {}, byref, isz ldr x0, [fp, #0x40] ; gcrRegs +[x0]- ldr x1, [fp, #0x40]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -217,7 +217,7 @@ G_M17784_IG10: ; bbWeight=2, gcrefRegs=580000 {x19 x20 x22}, byrefRegs=00 cbnz w0, G_M17784_IG11 ldr x0, [fp, #0x40] ; gcrRegs +[x0]- ldr x1, [fp, #0x40]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -229,7 +229,7 @@ G_M17784_IG10: ; bbWeight=2, gcrefRegs=580000 {x19 x20 x22}, byrefRegs=00 cbnz w0, G_M17784_IG11 ldr x0, [fp, #0x40] ; gcrRegs +[x0]- ldr x1, [fp, #0x40]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -286,7 +286,7 @@ G_M17784_IG10: ; bbWeight=2, gcrefRegs=580000 {x19 x20 x22}, byrefRegs=00 blr x8 ; gcrRegs -[x0-x2 x25] ; gcr arg pop 0-;; size=228 bbWeight=2 PerfScore 223.00+;; size=228 bbWeight=2 PerfScore 214.00 G_M17784_IG11: ; bbWeight=4, gcrefRegs=580000 {x19 x20 x22}, byrefRegs=0000 {}, byref, isz add w24, w24, #1 cmp w23, w24@@ -462,7 +462,7 @@ G_M17784_IG26: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, ret lr ;; size=24 bbWeight=0 PerfScore 0.00-; Total bytes of code 956, prolog size 52, PerfScore 617.60, instruction count 239, allocated bytes for code 956 (MethodHash=6908ba87) for method Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol:NoteFieldDefinitions():this+; Total bytes of code 956, prolog size 52, PerfScore 608.60, instruction count 239, allocated bytes for code 956 (MethodHash=6908ba87) for method Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol:NoteFieldDefinitions():this ; ============================================================ Unwind Info: libraries_tests.pmi.linux.arm64.checked.mch-12 (-0.80%) : 274355.dasm - Humanizer.Localisation.NumberToWords.SpanishNumberToWordsConverter:ConvertToOrdinal(int,int,int):System.String:this@@ -255,7 +255,6 @@ G_M30388_IG11: ; bbWeight=0.50, gcrefRegs=400000 {x22}, byrefRegs=0000 {} mov x24, x23 ; gcrRegs +[x24] ldr w1, [fp, #0x10]- ldr w1, [fp, #0x10]// [V05 loc1] movz w11, #0xD1FFAB1E movk w11, #0xD1FFAB1E LSL #16 smull x1, w11, w1@@ -289,7 +288,7 @@ G_M30388_IG11: ; bbWeight=0.50, gcrefRegs=400000 {x22}, byrefRegs=0000 {} mov x2, x0 ; gcrRegs +[x2] ldr w1, [fp, #0x10]// [V05 loc1]- ldr w0, [fp, #0x10]// [V05 loc1]+ mov w0, w1 ; gcrRegs -[x0] movz w3, #0xD1FFAB1E movk w3, #0xD1FFAB1E LSL #16@@ -302,7 +301,7 @@ G_M30388_IG11: ; bbWeight=0.50, gcrefRegs=400000 {x22}, byrefRegs=0000 {} str w1, [fp, #0x10]// [V05 loc1] mov x24, x2 ; gcrRegs +[x24]-;; size=220 bbWeight=0.50 PerfScore 25.50+;; size=216 bbWeight=0.50 PerfScore 23.75 G_M30388_IG12: ; bbWeight=0.50, gcrefRegs=1C00000 {x22 x23 x24}, byrefRegs=0000 {}, byref, isz ; gcrRegs -[x2] mov x2, x24@@ -346,7 +345,6 @@ G_M30388_IG15: ; bbWeight=0.50, gcrefRegs=C00000 {x22 x23}, byrefRegs=000 mov x24, x23 ; gcrRegs +[x24] ldr w1, [fp, #0x10]// [V05 loc1]- ldr w1, [fp, #0x10]// [V05 loc1] movz w11, #0xD1FFAB1E movk w11, #0xD1FFAB1E LSL #16 smull x1, w11, w1@@ -379,7 +377,7 @@ G_M30388_IG15: ; bbWeight=0.50, gcrefRegs=C00000 {x22 x23}, byrefRegs=000 mov x2, x0 ; gcrRegs +[x2] ldr w1, [fp, #0x10]// [V05 loc1]- ldr w0, [fp, #0x10]// [V05 loc1]+ mov w0, w1 ; gcrRegs -[x0] movz w3, #0xD1FFAB1E movk w3, #0xD1FFAB1E LSL #16@@ -392,7 +390,7 @@ G_M30388_IG15: ; bbWeight=0.50, gcrefRegs=C00000 {x22 x23}, byrefRegs=000 str w1, [fp, #0x10]// [V05 loc1] mov x24, x2 ; gcrRegs +[x24]-;; size=176 bbWeight=0.50 PerfScore 22.50+;; size=172 bbWeight=0.50 PerfScore 20.75 G_M30388_IG16: ; bbWeight=0.50, gcrefRegs=1C00000 {x22 x23 x24}, byrefRegs=0000 {}, byref, isz ; gcrRegs -[x2] mov x2, x24@@ -436,7 +434,6 @@ G_M30388_IG19: ; bbWeight=0.50, gcrefRegs=C00000 {x22 x23}, byrefRegs=000 mov x2, x23 ; gcrRegs +[x2] ldr w1, [fp, #0x10]// [V05 loc1]- ldr w1, [fp, #0x10]// [V05 loc1] movz w11, #0xD1FFAB1E movk w11, #0xD1FFAB1E LSL #16 smull x1, w11, w1@@ -472,7 +469,7 @@ G_M30388_IG19: ; bbWeight=0.50, gcrefRegs=C00000 {x22 x23}, byrefRegs=000 mov x2, x0 ; gcrRegs +[x2] ldr w1, [fp, #0x10]// [V05 loc1]- ldr w0, [fp, #0x10]// [V05 loc1]+ mov w0, w1 ; gcrRegs -[x0] movz w3, #0xD1FFAB1E movk w3, #0xD1FFAB1E LSL #16@@ -483,7 +480,7 @@ G_M30388_IG19: ; bbWeight=0.50, gcrefRegs=C00000 {x22 x23}, byrefRegs=000 mov w3, #10 msub w1, w0, w3, w1 str w1, [fp, #0x10]// [V05 loc1]-;; size=172 bbWeight=0.50 PerfScore 22.25+;; size=168 bbWeight=0.50 PerfScore 20.50 G_M30388_IG20: ; bbWeight=0.50, gcrefRegs=400004 {x2 x22}, byrefRegs=0000 {}, byref, isz ldr w1, [x22, #0x14] add w1, w1, #1@@ -593,7 +590,7 @@ G_M30388_IG30: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref brk_unix #0 ;; size=24 bbWeight=0 PerfScore 0.00-; Total bytes of code 1504, prolog size 24, PerfScore 347.93, instruction count 376, allocated bytes for code 1504 (MethodHash=e313894b) for method Humanizer.Localisation.NumberToWords.SpanishNumberToWordsConverter:ConvertToOrdinal(int,int,int):System.String:this+; Total bytes of code 1492, prolog size 24, PerfScore 341.48, instruction count 373, allocated bytes for code 1492 (MethodHash=e313894b) for method Humanizer.Localisation.NumberToWords.SpanishNumberToWordsConverter:ConvertToOrdinal(int,int,int):System.String:this ; ============================================================ Unwind Info:@@ -604,7 +601,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 376 (0x00178) Actual length = 1504 (0x0005e0)+ Function Length : 373 (0x00175) Actual length = 1492 (0x0005d4) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) -4 (-0.19%) : 245583.dasm - System.Memory.Tests.SequenceReader.IsNext:IsNext_Empty(bool):this@@ -747,7 +747,6 @@ G_M58786_IG30: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=100001 {x0 x beq G_M58786_IG31 ldr x0, [fp, #0x28]// [V02 loc0+0x08] ldr w0, [fp, #0x30]// [V02 loc0+0x10]- ldr w0, [fp, #0x30]// [V02 loc0+0x10] ldr w1, [fp, #0x78]// [V02 loc0+0x58] cmp w0, w1 blt G_M58786_IG31@@ -757,7 +756,7 @@ G_M58786_IG30: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=100001 {x0 x movk x1, #0xD1FFAB1E LSL #32 ldr x1, [x1] blr x1-;; size=88 bbWeight=0.50 PerfScore 12.25+;; size=84 bbWeight=0.50 PerfScore 11.25 G_M58786_IG31: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref mov w22, #1 b G_M58786_IG34@@ -1004,7 +1003,7 @@ G_M58786_IG45: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref brk_unix #0 ;; size=8 bbWeight=0 PerfScore 0.00-; Total bytes of code 2132, prolog size 48, PerfScore 541.20, instruction count 533, allocated bytes for code 2132 (MethodHash=6c091a5d) for method System.Memory.Tests.SequenceReader.IsNext:IsNext_Empty(bool):this+; Total bytes of code 2128, prolog size 48, PerfScore 539.80, instruction count 532, allocated bytes for code 2128 (MethodHash=6c091a5d) for method System.Memory.Tests.SequenceReader.IsNext:IsNext_Empty(bool):this ; ============================================================ Unwind Info:@@ -1015,7 +1014,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 533 (0x00215) Actual length = 2132 (0x000854)+ Function Length : 532 (0x00214) Actual length = 2128 (0x000850) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) -4 (-0.07%) : 245584.dasm - System.Memory.Tests.SequenceReader.IsNext:IsNext_Span():this@@ -1515,7 +1515,6 @@ G_M41749_IG28: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=80001 {x0 x1 cbz w0, G_M41749_IG31 ldr x0, [fp, #0x30]// [V02 loc1+0x08] ldr w0, [fp, #0x38]// [V02 loc1+0x10]- ldr w0, [fp, #0x38]// [V02 loc1+0x10] ldr w1, [fp, #0x80]// [V02 loc1+0x58] cmp w0, w1 blt G_M41749_IG29@@ -1525,7 +1524,7 @@ G_M41749_IG28: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=80001 {x0 x1 movk x1, #0xD1FFAB1E LSL #32 ldr x1, [x1] blr x1-;; size=80 bbWeight=0.50 PerfScore 11.50+;; size=76 bbWeight=0.50 PerfScore 10.50 G_M41749_IG29: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref mov w21, #1 b G_M41749_IG32@@ -2822,7 +2821,7 @@ G_M41749_IG99: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref brk_unix #0 ;; size=8 bbWeight=0 PerfScore 0.00-; Total bytes of code 5372, prolog size 56, PerfScore 1464.20, instruction count 1343, allocated bytes for code 5372 (MethodHash=3c225cea) for method System.Memory.Tests.SequenceReader.IsNext:IsNext_Span():this+; Total bytes of code 5368, prolog size 56, PerfScore 1462.80, instruction count 1342, allocated bytes for code 5368 (MethodHash=3c225cea) for method System.Memory.Tests.SequenceReader.IsNext:IsNext_Span():this ; ============================================================ Unwind Info:@@ -2833,7 +2832,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 1343 (0x0053f) Actual length = 5372 (0x0014fc)+ Function Length : 1342 (0x0053e) Actual length = 5368 (0x0014f8) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) +0 (0.00%) : 324288.dasm - Autofac.Core.Registration.ComponentRegistryBuilder:GetRegistered():System.EventHandler`1[Autofac.Core.ComponentRegisteredEventArgs]:this@@ -38,10 +38,10 @@ G_M24249_IG02: ; bbWeight=1, gcrefRegs=0001 {x0}, byrefRegs=0000 {}, byre G_M24249_IG03: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz ldr x0, [fp, #0x18] ; gcrRegs +[x0]- ldr x1, [fp, #0x18]+ mov x1, x0 ; gcrRegs +[x1] cbz x1, G_M24249_IG05-;; size=12 bbWeight=0.50 PerfScore 2.50+;; size=12 bbWeight=0.50 PerfScore 1.75 G_M24249_IG04: ; bbWeight=0.25, gcrefRegs=0001 {x0}, byrefRegs=0000 {}, byref, isz ; gcrRegs -[x1] ldr x1, [fp, #0x18]@@ -79,7 +79,7 @@ G_M24249_IG08: ; bbWeight=0, gcVars=0000000000000000 {}, gcrefRegs=0000 { brk_unix #0 ;; size=32 bbWeight=0 PerfScore 0.00-; Total bytes of code 148, prolog size 12, PerfScore 35.55, instruction count 37, allocated bytes for code 148 (MethodHash=dda8a146) for method Autofac.Core.Registration.ComponentRegistryBuilder:GetRegistered():System.EventHandler`1[Autofac.Core.ComponentRegisteredEventArgs]:this+; Total bytes of code 148, prolog size 12, PerfScore 34.80, instruction count 37, allocated bytes for code 148 (MethodHash=dda8a146) for method Autofac.Core.Registration.ComponentRegistryBuilder:GetRegistered():System.EventHandler`1[Autofac.Core.ComponentRegisteredEventArgs]:this ; ============================================================ Unwind Info: +0 (0.00%) : 373440.dasm - LibraryImportGenerator.IntegrationTests.NativeExportsNE+LPTStr:Reverse_Return(System.String):System.String@@ -123,9 +123,9 @@ G_M18255_IG11: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref G_M18255_IG12: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref, isz ; gcrRegs -[x0] ldr x0, [fp, #0x60]// [V02 loc1]- ldr x1, [fp, #0x60]// [V02 loc1]+ mov x1, x0 cbz x1, G_M18255_IG14-;; size=12 bbWeight=1 PerfScore 5.00+;; size=12 bbWeight=1 PerfScore 3.50 G_M18255_IG13: ; bbWeight=0.50, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref bl <unknown method> ; gcr arg pop 0@@ -178,7 +178,7 @@ G_M18255_IG19: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, ;; size=32 bbWeight=0 PerfScore 0.00 G_M18255_IG20: ; bbWeight=0, gcVars=0000000000000000 {}, gcrefRegs=0000 {}, byrefRegs=0000 {}, gcvars, byref, isz ldr x0, [fp, #0x60]// [V02 loc1]- ldr x1, [fp, #0x60]// [V02 loc1]+ mov x1, x0 cbz x1, G_M18255_IG21 bl <unknown method> ; gcr arg pop 0@@ -193,7 +193,7 @@ G_M18255_IG21: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, ret lr ;; size=28 bbWeight=0 PerfScore 0.00-; Total bytes of code 428, prolog size 44, PerfScore 108.54, instruction count 107, allocated bytes for code 428 (MethodHash=1e33b8b0) for method LibraryImportGenerator.IntegrationTests.NativeExportsNE+LPTStr:Reverse_Return(System.String):System.String+; Total bytes of code 428, prolog size 44, PerfScore 107.04, instruction count 107, allocated bytes for code 428 (MethodHash=1e33b8b0) for method LibraryImportGenerator.IntegrationTests.NativeExportsNE+LPTStr:Reverse_Return(System.String):System.String ; ============================================================ Unwind Info: +4 (+0.16%) : 311915.dasm - System.IO.Tests.StreamConformanceTests+d__48:MoveNext():this@@ -202,11 +202,12 @@ G_M4893_IG04: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0001 {x0}, byref ;; size=36 bbWeight=1 PerfScore 10.50 G_M4893_IG05: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0001 {x0}, byref, isz ldr w19, [x0, #0x18]- ldp w1, w2, [x0, #0x18]+ mov w1, w19+ ldr w2, [x0, #0x1C] add w1, w1, w2 cmp w1, w19 ble G_M4893_IG43-;; size=20 bbWeight=1 PerfScore 8.00+;; size=24 bbWeight=1 PerfScore 8.50 G_M4893_IG06: ; bbWeight=8, gcrefRegs=0000 {}, byrefRegs=0001 {x0}, byref, isz ldr x2, [x0] ; gcrRegs +[x2]@@ -685,7 +686,7 @@ G_M4893_IG31: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0001 {x0}, byref ; byrRegs +[x0] ldr x19, [x0] ; gcrRegs +[x19]- ldr x6, [x0]+ mov x6, x19 ; gcrRegs +[x6] mov x0, x6 ; gcrRegs +[x0]@@ -713,7 +714,7 @@ G_M4893_IG31: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0001 {x0}, byref ; gcrRegs -[x0-x1 x19] ; gcr arg pop 0 b G_M4893_IG43-;; size=72 bbWeight=1 PerfScore 32.00+;; size=72 bbWeight=1 PerfScore 29.50 G_M4893_IG32: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0001 {x0}, byref, isz ; byrRegs -[x20] +[x0] movz x1, #0xD1FFAB1E@@ -1176,7 +1177,7 @@ RWD12 ddG_M4893_IG05 - G_M4893_IG02 ddG_M4893_IG32 - G_M4893_IG02-; Total bytes of code 2516, prolog size 60, PerfScore 1072.76, instruction count 629, allocated bytes for code 2516 (MethodHash=e9e3ece2) for method System.IO.Tests.StreamConformanceTests+<WriteAsync>d__48:MoveNext():this+; Total bytes of code 2520, prolog size 60, PerfScore 1071.16, instruction count 630, allocated bytes for code 2520 (MethodHash=e9e3ece2) for method System.IO.Tests.StreamConformanceTests+<WriteAsync>d__48:MoveNext():this ; ============================================================ Unwind Info:@@ -1187,7 +1188,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 605 (0x0025d) Actual length = 2420 (0x000974)+ Function Length : 606 (0x0025e) Actual length = 2424 (0x000978) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) libraries.crossgen2.linux.arm64.checked.mch-4 (-0.77%) : 47758.dasm - System.IO.Path:GetFullPathInternal(System.String):System.String@@ -71,10 +71,9 @@ G_M7994_IG02: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byr cbz x19, G_M7994_IG04 ;; size=4 bbWeight=1 PerfScore 1.00 G_M7994_IG03: ; bbWeight=0.50, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref, isz- ldr w1, [x19, #0x08] ldr w1, [x19, #0x08] cbnz w1, G_M7994_IG05-;; size=12 bbWeight=0.50 PerfScore 3.50+;; size=8 bbWeight=0.50 PerfScore 2.00 G_M7994_IG04: ; bbWeight=0.50, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref adrp x1, [HIGH RELOC #0xD1FFAB1E] // const ptr add x1, x1, [LOW RELOC #0xD1FFAB1E]@@ -265,7 +264,7 @@ G_M7994_IG17: ; bbWeight=1, gcrefRegs=0001 {x0}, byrefRegs=0000 {}, byref ret lr ;; size=16 bbWeight=1 PerfScore 5.00-; Total bytes of code 520, prolog size 16, PerfScore 160.75, instruction count 130, allocated bytes for code 520 (MethodHash=fc5ee0c5) for method System.IO.Path:GetFullPathInternal(System.String):System.String+; Total bytes of code 516, prolog size 16, PerfScore 158.85, instruction count 129, allocated bytes for code 516 (MethodHash=fc5ee0c5) for method System.IO.Path:GetFullPathInternal(System.String):System.String ; ============================================================ Unwind Info:@@ -276,7 +275,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 130 (0x00082) Actual length = 520 (0x000208)+ Function Length : 129 (0x00081) Actual length = 516 (0x000204) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) -4 (-0.20%) : 51116.dasm - System.Environment:ReadXdgDirectory(System.String,System.String,System.String):System.String@@ -144,9 +144,8 @@ G_M35333_IG03: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, by G_M35333_IG04: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref, isz cbz x19, G_M35333_IG05 ldr w11, [x19, #0x08]- ldr w11, [x19, #0x08] cbnz w11, G_M35333_IG06-;; size=16 bbWeight=1 PerfScore 8.00+;; size=12 bbWeight=1 PerfScore 5.00 G_M35333_IG05: ; bbWeight=1, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref adrp x11, [HIGH RELOC #0xD1FFAB1E] // const ptr add x11, x11, [LOW RELOC #0xD1FFAB1E]@@ -888,7 +887,7 @@ G_M35333_IG59: ; bbWeight=0, funclet epilog, nogc, extend ret lr ;; size=20 bbWeight=0 PerfScore 0.00-; Total bytes of code 1976, prolog size 60, PerfScore 2322.10, instruction count 494, allocated bytes for code 1976 (MethodHash=a8cb75fa) for method System.Environment:ReadXdgDirectory(System.String,System.String,System.String):System.String+; Total bytes of code 1972, prolog size 60, PerfScore 2318.70, instruction count 493, allocated bytes for code 1972 (MethodHash=a8cb75fa) for method System.Environment:ReadXdgDirectory(System.String,System.String,System.String):System.String ; ============================================================ Unwind Info:@@ -899,7 +898,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 346 (0x0015a) Actual length = 1384 (0x000568)+ Function Length : 345 (0x00159) Actual length = 1380 (0x000564) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) -4 (-0.08%) : 63176.dasm - System.Xml.Serialization.XmlSerializationWriterILGen:GenerateMembersElement(System.Xml.Serialization.XmlMembersMapping):System.String:this@@ -2011,7 +2011,6 @@ G_M40744_IG41: ; bbWeight=2, gcVars=00000000000000000100000000000000 {V28 cbz x27, G_M40744_IG42 ldr x0, [x27, #0x08] ; gcrRegs +[x0]- ldr x0, [x27, #0x08] cbz x0, G_M40744_IG42 ldr x0, [x19, #0x70] adrp x11, [HIGH RELOC #0xD1FFAB1E] // function address@@ -2021,7 +2020,7 @@ G_M40744_IG41: ; bbWeight=2, gcVars=00000000000000000100000000000000 {V28 blr x1 ; gcrRegs -[x0 x27] ; gcr arg pop 0-;; size=160 bbWeight=2 PerfScore 108.00+;; size=156 bbWeight=2 PerfScore 102.00 G_M40744_IG42: ; bbWeight=2, gcrefRegs=3280000 {x19 x21 x24 x25}, byrefRegs=0000 {}, byref ldr x0, [x19, #0x70] ; gcrRegs +[x0]@@ -2087,7 +2086,7 @@ G_M40744_IG48: ; bbWeight=0, gcVars=00000000000000000000000000000000 {}, brk_unix #0 ;; size=20 bbWeight=0 PerfScore 0.00-; Total bytes of code 5004, prolog size 56, PerfScore 5114.15, instruction count 1251, allocated bytes for code 5004 (MethodHash=33d560d7) for method System.Xml.Serialization.XmlSerializationWriterILGen:GenerateMembersElement(System.Xml.Serialization.XmlMembersMapping):System.String:this+; Total bytes of code 5000, prolog size 56, PerfScore 5107.75, instruction count 1250, allocated bytes for code 5000 (MethodHash=33d560d7) for method System.Xml.Serialization.XmlSerializationWriterILGen:GenerateMembersElement(System.Xml.Serialization.XmlMembersMapping):System.String:this ; ============================================================ Unwind Info:@@ -2098,7 +2097,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 1251 (0x004e3) Actual length = 5004 (0x00138c)+ Function Length : 1250 (0x004e2) Actual length = 5000 (0x001388) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) +0 (0.00%) : 123392.dasm - System.Net.Http.Headers.ContentRangeHeaderValue:GetContentRangeLength(System.String,int,byref):int@@ -122,7 +122,7 @@ G_M36127_IG03: ; bbWeight=0.50, gcrefRegs=80000 {x19}, byrefRegs=200000 { add w1, w1, #1 str w1, [fp, #0x38]// [V05 loc2] ldr w25, [fp, #0x38]// [V05 loc2]- ldr w1, [fp, #0x38]// [V05 loc2]+ mov w1, w25 mov x0, x19 ; gcrRegs +[x0] adrp x11, [HIGH RELOC #0xD1FFAB1E] // function address@@ -166,7 +166,7 @@ G_M36127_IG03: ; bbWeight=0.50, gcrefRegs=80000 {x19}, byrefRegs=200000 { cbz w0, G_M36127_IG05 ldr w0, [fp, #0x38]// [V05 loc2] sub w0, w0, w20-;; size=384 bbWeight=0.50 PerfScore 53.75+;; size=384 bbWeight=0.50 PerfScore 53.00 G_M36127_IG04: ; bbWeight=0.50, epilog, nogc, extend ldr x25, [sp, #0x78] ldp x23, x24, [sp, #0x68]@@ -196,7 +196,7 @@ G_M36127_IG07: ; bbWeight=0, gcVars=0000000000000000 {}, gcrefRegs=0000 { brk_unix #0 ;; size=20 bbWeight=0 PerfScore 0.00-; Total bytes of code 532, prolog size 28, PerfScore 129.70, instruction count 133, allocated bytes for code 532 (MethodHash=7ab672e0) for method System.Net.Http.Headers.ContentRangeHeaderValue:GetContentRangeLength(System.String,int,byref):int+; Total bytes of code 532, prolog size 28, PerfScore 128.95, instruction count 133, allocated bytes for code 532 (MethodHash=7ab672e0) for method System.Net.Http.Headers.ContentRangeHeaderValue:GetContentRangeLength(System.String,int,byref):int ; ============================================================ Unwind Info: +0 (0.00%) : 150016.dasm - Microsoft.CodeAnalysis.CodeGen.ILBuilder+LocalScopeManager:GetAllScopesWithLocals():System.Collections.Immutable.ImmutableArray`1[Microsoft.Cci.LocalScope]:this@@ -121,7 +121,7 @@ G_M176_IG03: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, ; byrRegs +[x0] ldr x1, [x0] ; gcrRegs +[x1]- ldr x0, [x0]+ mov x0, x1 ; gcrRegs +[x0] ; byrRegs -[x0] ldr x11, [x20, #0x08]@@ -140,7 +140,7 @@ G_M176_IG03: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, ldr x2, [x11] blr x2 ; gcrRegs -[x0]-;; size=148 bbWeight=0.50 PerfScore 28.00+;; size=148 bbWeight=0.50 PerfScore 26.75 G_M176_IG04: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref adrp x11, [HIGH RELOC #0xD1FFAB1E] // function address add x11, x11, [LOW RELOC #0xD1FFAB1E]@@ -172,7 +172,7 @@ G_M176_IG05: ; bbWeight=1, epilog, nogc, extend ret lr ;; size=12 bbWeight=1 PerfScore 3.00-; Total bytes of code 376, prolog size 28, PerfScore 145.10, instruction count 94, allocated bytes for code 376 (MethodHash=5bebff4f) for method Microsoft.CodeAnalysis.CodeGen.ILBuilder+LocalScopeManager:GetAllScopesWithLocals():System.Collections.Immutable.ImmutableArray`1[Microsoft.Cci.LocalScope]:this+; Total bytes of code 376, prolog size 28, PerfScore 143.85, instruction count 94, allocated bytes for code 376 (MethodHash=5bebff4f) for method Microsoft.CodeAnalysis.CodeGen.ILBuilder+LocalScopeManager:GetAllScopesWithLocals():System.Collections.Immutable.ImmutableArray`1[Microsoft.Cci.LocalScope]:this ; ============================================================ Unwind Info: +0 (0.00%) : 157888.dasm - System.Text.BinHexEncoding:GetMaxByteCount(int):int:this@@ -33,10 +33,10 @@ G_M45031_IG02: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, ldr w0, [fp, #0x1C] tbnz w0, #0, G_M45031_IG05 ldr w0, [fp, #0x1C]- ldr w11, [fp, #0x1C]+ mov w11, w0 add w0, w11, w0, LSR #31 asr w0, w0, #1-;; size=36 bbWeight=1 PerfScore 12.50+;; size=36 bbWeight=1 PerfScore 11.00 G_M45031_IG03: ; bbWeight=1, epilog, nogc, extend ldp x19, x20, [sp, #0x20] ldp fp, lr, [sp], #0x30@@ -129,7 +129,7 @@ G_M45031_IG05: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref brk_unix #0 ;; size=132 bbWeight=0 PerfScore 0.00-; Total bytes of code 296, prolog size 12, PerfScore 48.60, instruction count 74, allocated bytes for code 296 (MethodHash=a2365018) for method System.Text.BinHexEncoding:GetMaxByteCount(int):int:this+; Total bytes of code 296, prolog size 12, PerfScore 47.10, instruction count 74, allocated bytes for code 296 (MethodHash=a2365018) for method System.Text.BinHexEncoding:GetMaxByteCount(int):int:this ; ============================================================ Unwind Info: libraries.pmi.linux.arm64.checked.mch-4 (-1.37%) : 82027.dasm - ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc@@ -48,10 +48,9 @@ G_M10356_IG02: ; bbWeight=1, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 { cbz x19, G_M10356_IG04 ;; size=4 bbWeight=1 PerfScore 1.00 G_M10356_IG03: ; bbWeight=0.46, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref, isz- ldr w0, [x19, #0x08] ldr w0, [x19, #0x08] cbnz w0, G_M10356_IG05-;; size=12 bbWeight=0.46 PerfScore 3.22+;; size=8 bbWeight=0.46 PerfScore 1.84 G_M10356_IG04: ; bbWeight=0.50, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref movz x1, #8 movk x1, #0xD1FFAB1E LSL #16@@ -148,7 +147,7 @@ G_M10356_IG11: ; bbWeight=0.50, gcrefRegs=0001 {x0}, byrefRegs=0000 {}, b ret lr ;; size=12 bbWeight=0.50 PerfScore 1.50-; Total bytes of code 292, prolog size 20, PerfScore 73.92, instruction count 73, allocated bytes for code 292 (MethodHash=ac08d78b) for method ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc+; Total bytes of code 288, prolog size 20, PerfScore 72.14, instruction count 72, allocated bytes for code 288 (MethodHash=ac08d78b) for method ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc ; ============================================================ Unwind Info:@@ -159,7 +158,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 73 (0x00049) Actual length = 292 (0x000124)+ Function Length : 72 (0x00048) Actual length = 288 (0x000120) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) +0 (0.00%) : 16641.dasm - System.Data.Common.DbCommand:ExecuteScalarAsync(System.Threading.CancellationToken):System.Threading.Tasks.Task`1[System.Object]:this@@ -343,10 +343,10 @@ G_M42079_IG15: ; bbWeight=0, gcVars=0000000000020200 {V03 V59}, gcrefRegs G_M42079_IG16: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz ldr x19, [fp, #0x18]// [V59 tmp54] ; gcrRegs +[x19]- ldr x0, [fp, #0x18]// [V59 tmp54]+ mov x0, x19 ; gcrRegs +[x0] cbz x0, G_M42079_IG22-;; size=12 bbWeight=1 PerfScore 5.00+;; size=12 bbWeight=1 PerfScore 3.50 G_M42079_IG17: ; bbWeight=0.19, gcVars=0000000000020000 {V03}, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, gcvars, byref, isz ; gcrRegs -[x0] ; GC ptr vars -{V59}@@ -514,7 +514,7 @@ G_M42079_IG31: ; bbWeight=0, gcVars=0000000000000200 {V59}, gcrefRegs=000 G_M42079_IG32: ; bbWeight=0, gcVars=0000000000000200 {V59}, gcrefRegs=0000 {}, byrefRegs=0000 {}, gcvars, byref, isz ldr x19, [fp, #0x18]// [V59 tmp54] ; gcrRegs +[x19]- ldr x0, [fp, #0x18]// [V59 tmp54]+ mov x0, x19 ; gcrRegs +[x0] cbz x0, G_M42079_IG33 ldr x0, [x19, #0x08]@@ -574,7 +574,7 @@ G_M42079_IG33: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, ret lr ;; size=20 bbWeight=0 PerfScore 0.00-; Total bytes of code 1152, prolog size 40, PerfScore 300.56, instruction count 288, allocated bytes for code 1152 (MethodHash=134a5ba0) for method System.Data.Common.DbCommand:ExecuteScalarAsync(System.Threading.CancellationToken):System.Threading.Tasks.Task`1[System.Object]:this+; Total bytes of code 1152, prolog size 40, PerfScore 299.06, instruction count 288, allocated bytes for code 1152 (MethodHash=134a5ba0) for method System.Data.Common.DbCommand:ExecuteScalarAsync(System.Threading.CancellationToken):System.Threading.Tasks.Task`1[System.Object]:this ; ============================================================ Unwind Info: +0 (0.00%) : 20865.dasm - Microsoft.CodeAnalysis.VisualBasic.Symbols.DeclarationTreeBuilder:VisitDelegateStatement(Microsoft.CodeAnalysis.VisualBasic.Syntax.DelegateStatementSyntax):Microsoft.CodeAnalysis.VisualBasic.Symbols.SingleNamespaceOrTypeDeclaration:this@@ -258,7 +258,7 @@ G_M26984_IG11: ; bbWeight=0.50, gcrefRegs=2500000 {x20 x22 x25}, byrefReg ldr w19, [fp, #0x4C] ldr x0, [fp, #0x40] ; gcrRegs +[x0]- ldr x1, [fp, #0x40]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -270,7 +270,7 @@ G_M26984_IG11: ; bbWeight=0.50, gcrefRegs=2500000 {x20 x22 x25}, byrefReg str xzr, [fp, #0x18]// [V35 tmp30] ldr x0, [fp, #0x40]// [V41 tmp36] ; gcrRegs +[x0]- ldr x1, [fp, #0x40]// [V41 tmp36]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -288,7 +288,7 @@ G_M26984_IG11: ; bbWeight=0.50, gcrefRegs=2500000 {x20 x22 x25}, byrefReg blr x3 ldr w19, [fp, #0x18]// [V50 tmp45] ldr w26, [fp, #0x1C]// [V51 tmp46]-;; size=100 bbWeight=0.50 PerfScore 21.25+;; size=100 bbWeight=0.50 PerfScore 19.75 G_M26984_IG12: ; bbWeight=1, gcrefRegs=2500000 {x20 x22 x25}, byrefRegs=0000 {}, byref mov x0, x20 ; gcrRegs +[x0]@@ -397,7 +397,7 @@ G_M26984_IG14: ; bbWeight=0, gcVars=0000000000000000 {}, gcrefRegs=0002 { brk_unix #0 ;; size=28 bbWeight=0 PerfScore 0.00-; Total bytes of code 860, prolog size 40, PerfScore 273.75, instruction count 215, allocated bytes for code 860 (MethodHash=72499697) for method Microsoft.CodeAnalysis.VisualBasic.Symbols.DeclarationTreeBuilder:VisitDelegateStatement(Microsoft.CodeAnalysis.VisualBasic.Syntax.DelegateStatementSyntax):Microsoft.CodeAnalysis.VisualBasic.Symbols.SingleNamespaceOrTypeDeclaration:this+; Total bytes of code 860, prolog size 40, PerfScore 272.25, instruction count 215, allocated bytes for code 860 (MethodHash=72499697) for method Microsoft.CodeAnalysis.VisualBasic.Symbols.DeclarationTreeBuilder:VisitDelegateStatement(Microsoft.CodeAnalysis.VisualBasic.Syntax.DelegateStatementSyntax):Microsoft.CodeAnalysis.VisualBasic.Symbols.SingleNamespaceOrTypeDeclaration:this ; ============================================================ Unwind Info: +0 (0.00%) : 217152.dasm - System.Net.Http.Headers.MediaTypeWithQualityHeaderValue:TryParse(System.String,byref):bool@@ -57,10 +57,10 @@ G_M51950_IG02: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=80000 {x19 G_M51950_IG03: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=80000 {x19}, byref, isz ldr x15, [fp, #0x10]// [V03 loc1] ; gcrRegs +[x15]- ldr x14, [fp, #0x10]// [V03 loc1]+ mov x14, x15 ; gcrRegs +[x14] cbz x14, G_M51950_IG05-;; size=12 bbWeight=0.50 PerfScore 2.50+;; size=12 bbWeight=0.50 PerfScore 1.75 G_M51950_IG04: ; bbWeight=0.25, gcrefRegs=8000 {x15}, byrefRegs=80000 {x19}, byref, isz ; gcrRegs -[x14] ldr x14, [fp, #0x10]// [V03 loc1]@@ -106,7 +106,7 @@ G_M51950_IG09: ; bbWeight=0, gcVars=0000000000000000 {}, gcrefRegs=0000 { brk_unix #0 ;; size=28 bbWeight=0 PerfScore 0.00-; Total bytes of code 220, prolog size 16, PerfScore 56.25, instruction count 55, allocated bytes for code 220 (MethodHash=dc143511) for method System.Net.Http.Headers.MediaTypeWithQualityHeaderValue:TryParse(System.String,byref):bool+; Total bytes of code 220, prolog size 16, PerfScore 55.50, instruction count 55, allocated bytes for code 220 (MethodHash=dc143511) for method System.Net.Http.Headers.MediaTypeWithQualityHeaderValue:TryParse(System.String,byref):bool ; ============================================================ Unwind Info: +0 (0.00%) : 241984.dasm - System.Composition.Hosting.Core.LifetimeContext:TryGetExport(System.Composition.Hosting.Core.CompositionContract,byref):bool:this@@ -53,7 +53,7 @@ G_M24388_IG05: ; bbWeight=0.50, gcVars=0000000000000000 {}, gcrefRegs=800 ; gcrRegs +[x19] ldr x0, [fp, #0x18] ; gcrRegs +[x0]- ldr x1, [fp, #0x18]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -77,14 +77,14 @@ G_M24388_IG05: ; bbWeight=0.50, gcVars=0000000000000000 {}, gcrefRegs=800 ; gcrRegs -[x0 x15] ; byrRegs -[x14 x20] mov w0, #1-;; size=68 bbWeight=0.50 PerfScore 11.50+;; size=68 bbWeight=0.50 PerfScore 10.75 G_M24388_IG06: ; bbWeight=0.50, epilog, nogc, extend ldp x19, x20, [sp, #0x20] ldp fp, lr, [sp], #0x30 ret lr ;; size=12 bbWeight=0.50 PerfScore 1.50-; Total bytes of code 160, prolog size 16, PerfScore 48.75, instruction count 40, allocated bytes for code 160 (MethodHash=af7ea0bb) for method System.Composition.Hosting.Core.LifetimeContext:TryGetExport(System.Composition.Hosting.Core.CompositionContract,byref):bool:this+; Total bytes of code 160, prolog size 16, PerfScore 48.00, instruction count 40, allocated bytes for code 160 (MethodHash=af7ea0bb) for method System.Composition.Hosting.Core.LifetimeContext:TryGetExport(System.Composition.Hosting.Core.CompositionContract,byref):bool:this ; ============================================================ Unwind Info: +0 (0.00%) : 252352.dasm - System.IO.IsolatedStorage.IsolatedStorageFileStream:.ctor(System.String,int):this@@ -80,7 +80,7 @@ G_M25423_IG05: ; bbWeight=1, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 { ; gcrRegs -[x0] ldr x0, [fp, #0x10] ; gcrRegs +[x0]- ldr x1, [fp, #0x10]+ mov x1, x0 ; gcrRegs +[x1] ldr x1, [x1] ; gcrRegs -[x1]@@ -195,7 +195,7 @@ G_M25423_IG05: ; bbWeight=1, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 { bl CORINFO_HELP_ASSIGN_REF ; gcrRegs -[x15 x19] ; byrRegs -[x14]-;; size=340 bbWeight=1 PerfScore 99.50+;; size=340 bbWeight=1 PerfScore 98.00 G_M25423_IG06: ; bbWeight=1, epilog, nogc, extend ldr x23, [sp, #0x48] ldp x21, x22, [sp, #0x38]@@ -204,7 +204,7 @@ G_M25423_IG06: ; bbWeight=1, epilog, nogc, extend ret lr ;; size=20 bbWeight=1 PerfScore 6.00-; Total bytes of code 428, prolog size 32, PerfScore 160.05, instruction count 107, allocated bytes for code 428 (MethodHash=bd7c9cb0) for method System.IO.IsolatedStorage.IsolatedStorageFileStream:.ctor(System.String,int):this+; Total bytes of code 428, prolog size 32, PerfScore 158.55, instruction count 107, allocated bytes for code 428 (MethodHash=bd7c9cb0) for method System.IO.IsolatedStorage.IsolatedStorageFileStream:.ctor(System.String,int):this ; ============================================================ Unwind Info: coreclr_tests.run.linux.arm64.checked.mch-4 (-1.45%) : 554178.dasm - JitTest_val_ctor_newobj_il.TestStruct:Main():int@@ -37,7 +37,6 @@ G_M35170_IG02: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref ; gcr arg pop 0 ;; size=24 bbWeight=1 PerfScore 3.50 G_M35170_IG03: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz- ldr x0, [x19, #0x38] ldr x0, [x19, #0x38] cmp x0, #100 bge G_M35170_IG04@@ -50,7 +49,7 @@ G_M35170_IG03: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, ldr x2, [x2] blr x2 ; gcr arg pop 0-;; size=48 bbWeight=1 PerfScore 15.00+;; size=44 bbWeight=1 PerfScore 12.00 G_M35170_IG04: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz ldr x0, [x19, #0x38] cmp x0, #105@@ -115,7 +114,7 @@ G_M35170_IG10: ; bbWeight=0, funclet epilog, nogc, extend ret lr ;; size=12 bbWeight=0 PerfScore 0.00-; Total bytes of code 276, prolog size 20, PerfScore 78.60, instruction count 69, allocated bytes for code 276 (MethodHash=7069769d) for method JitTest_val_ctor_newobj_il.TestStruct:Main():int+; Total bytes of code 272, prolog size 20, PerfScore 75.20, instruction count 68, allocated bytes for code 272 (MethodHash=7069769d) for method JitTest_val_ctor_newobj_il.TestStruct:Main():int ; ============================================================ Unwind Info:@@ -126,7 +125,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 51 (0x00033) Actual length = 204 (0x0000cc)+ Function Length : 50 (0x00032) Actual length = 200 (0x0000c8) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) -4 (-1.37%) : 561619.dasm - ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc@@ -48,10 +48,9 @@ G_M10356_IG02: ; bbWeight=1, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 { cbz x19, G_M10356_IG04 ;; size=4 bbWeight=1 PerfScore 1.00 G_M10356_IG03: ; bbWeight=0.46, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref, isz- ldr w0, [x19, #0x08] ldr w0, [x19, #0x08] cbnz w0, G_M10356_IG05-;; size=12 bbWeight=0.46 PerfScore 3.22+;; size=8 bbWeight=0.46 PerfScore 1.84 G_M10356_IG04: ; bbWeight=0.50, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref movz x1, #0xD1FFAB1E movk x1, #0xD1FFAB1E LSL #16@@ -148,7 +147,7 @@ G_M10356_IG11: ; bbWeight=0.50, gcrefRegs=0001 {x0}, byrefRegs=0000 {}, b ret lr ;; size=12 bbWeight=0.50 PerfScore 1.50-; Total bytes of code 292, prolog size 20, PerfScore 73.92, instruction count 73, allocated bytes for code 292 (MethodHash=ac08d78b) for method ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc+; Total bytes of code 288, prolog size 20, PerfScore 72.14, instruction count 72, allocated bytes for code 288 (MethodHash=ac08d78b) for method ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc ; ============================================================ Unwind Info:@@ -159,7 +158,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 73 (0x00049) Actual length = 292 (0x000124)+ Function Length : 72 (0x00048) Actual length = 288 (0x000120) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) -4 (-1.37%) : 370595.dasm - ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc@@ -49,10 +49,9 @@ G_M10356_IG02: ; bbWeight=1, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 { cbz x19, G_M10356_IG04 ;; size=4 bbWeight=1 PerfScore 1.00 G_M10356_IG03: ; bbWeight=0.46, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref, isz- ldr w0, [x19, #0x08] ldr w0, [x19, #0x08] cbnz w0, G_M10356_IG05-;; size=12 bbWeight=0.46 PerfScore 3.22+;; size=8 bbWeight=0.46 PerfScore 1.84 G_M10356_IG04: ; bbWeight=0.50, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref movz x1, #0xD1FFAB1E movk x1, #0xD1FFAB1E LSL #16@@ -149,7 +148,7 @@ G_M10356_IG11: ; bbWeight=0.50, gcrefRegs=0001 {x0}, byrefRegs=0000 {}, b ret lr ;; size=12 bbWeight=0.50 PerfScore 1.50-; Total bytes of code 292, prolog size 20, PerfScore 73.92, instruction count 73, allocated bytes for code 292 (MethodHash=ac08d78b) for method ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc+; Total bytes of code 288, prolog size 20, PerfScore 72.14, instruction count 72, allocated bytes for code 288 (MethodHash=ac08d78b) for method ILCompiler.CecilCompatibleTypeParser:GetType(Internal.TypeSystem.ModuleDesc,System.String):Internal.TypeSystem.TypeDesc ; ============================================================ Unwind Info:@@ -160,7 +159,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 73 (0x00049) Actual length = 292 (0x000124)+ Function Length : 72 (0x00048) Actual length = 288 (0x000120) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) +0 (0.00%) : 535616.dasm - (dynamicClass):ABIStress_PInvoker750(int,ABIStress.I128_1,ABIStress.S15U,System.Int128,ABIStress.S12U,ABIStress.S13U,float,System.Int128,ABIStress.S9U,ABIStress.S8U,ABIStress.S4U,System.Int128,double,ABIStress.S3U,ABIStress.S17U,double,ABIStress.S10U,double,ABIStress.S3U,ABIStress.S8U,double):int[]@@ -594,7 +594,7 @@ G_M9188_IG07: ; bbWeight=1, isz, extend ldr x6, [fp, #0xD1FFAB1E]// [V08 arg8] mov x3, x6 ldr x4, [fp, #0xD1FFAB1E]// [V08 arg8+0x08]- ldr x7, [fp, #0xD1FFAB1E]// [V08 arg8+0x08]+ mov x7, x4 ldr w0, [fp, #0xD1FFAB1E]// [V18 arg18] ldr d0, [fp, #0xD1FFAB1E]// [V17 arg17] movz w1, #0xD1FFAB1E@@ -607,7 +607,7 @@ G_M9188_IG07: ; bbWeight=1, isz, extend ; byrRegs +[x8] str x8, [x21, #0x10] strb wzr, [x21, #0x0C]-;; size=68 bbWeight=1 PerfScore 22.00+;; size=68 bbWeight=1 PerfScore 20.50 G_M9188_IG08: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref ; byrRegs -[x8 x20] movz x8, #0xD1FFAB1E@@ -654,7 +654,7 @@ RWD00 dd463AD000h; 11956 RWD04 dd46F6C600h; 31587-; Total bytes of code 1992, prolog size 32, PerfScore 629.20, instruction count 498, allocated bytes for code 1992 (MethodHash=6120dc1b) for method (dynamicClass):ABIStress_PInvoker750(int,ABIStress.I128_1,ABIStress.S15U,System.Int128,ABIStress.S12U,ABIStress.S13U,float,System.Int128,ABIStress.S9U,ABIStress.S8U,ABIStress.S4U,System.Int128,double,ABIStress.S3U,ABIStress.S17U,double,ABIStress.S10U,double,ABIStress.S3U,ABIStress.S8U,double):int[]+; Total bytes of code 1992, prolog size 32, PerfScore 627.70, instruction count 498, allocated bytes for code 1992 (MethodHash=6120dc1b) for method (dynamicClass):ABIStress_PInvoker750(int,ABIStress.I128_1,ABIStress.S15U,System.Int128,ABIStress.S12U,ABIStress.S13U,float,System.Int128,ABIStress.S9U,ABIStress.S8U,ABIStress.S4U,System.Int128,double,ABIStress.S3U,ABIStress.S17U,double,ABIStress.S10U,double,ABIStress.S3U,ABIStress.S8U,double):int[] ; ============================================================ Unwind Info: +0 (0.00%) : 561088.dasm - AssemblyDependencyResolverTests.TestBase:RunSingleTest(System.Action,System.String):this@@ -79,7 +79,7 @@ G_M48672_IG01: ; bbWeight=1, gcVars=0000000000000000 {}, gcrefRegs=0000 { G_M48672_IG02: ; bbWeight=1, gcVars=0000000000000081 {V00 V02}, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, gcvars, byref, isz ldr x20, [fp, #0x18] ; gcrRegs +[x20]- ldr x0, [fp, #0x18]+ mov x0, x20 ; gcrRegs +[x0] cbnz x0, G_M48672_IG03 mov x0, x19@@ -99,7 +99,7 @@ G_M48672_IG02: ; bbWeight=1, gcVars=0000000000000081 {V00 V02}, gcrefRegs ; gcr arg pop 0 mov x20, x0 ; gcrRegs +[x20]-;; size=60 bbWeight=1 PerfScore 24.50+;; size=60 bbWeight=1 PerfScore 23.00 G_M48672_IG03: ; bbWeight=1, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref ; gcrRegs -[x0] str x20, [fp, #0x18]// [V02 arg2]@@ -470,7 +470,7 @@ G_M48672_IG25: ; bbWeight=0, funclet epilog, nogc, extend ret lr ;; size=20 bbWeight=0 PerfScore 0.00-; Total bytes of code 968, prolog size 40, PerfScore 251.34, instruction count 242, allocated bytes for code 968 (MethodHash=c3a841df) for method AssemblyDependencyResolverTests.TestBase:RunSingleTest(System.Action,System.String):this+; Total bytes of code 968, prolog size 40, PerfScore 249.84, instruction count 242, allocated bytes for code 968 (MethodHash=c3a841df) for method AssemblyDependencyResolverTests.TestBase:RunSingleTest(System.Action,System.String):this ; ============================================================ Unwind Info: +8 (+0.03%) : 543212.dasm - CseTest.Test_Main:Main():int@@ -4232,8 +4232,9 @@ G_M22188_IG242: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, blr x2 str w0, [x20, #0x28] ldr w0, [x20, #0x08]- ldp w1, w2, [x20, #0x08]- ldp w3, w4, [x20, #0x10]+ mov w1, w0+ ldp w2, w3, [x20, #0x0C]+ ldr w4, [x20, #0x14] madd w2, w3, w4, w2 ldp w3, w4, [x20, #0x14] msub w2, w3, w4, w2@@ -4250,7 +4251,7 @@ G_M22188_IG242: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, movk w0, #0xD1FFAB1E LSL #16 cmp w21, w0 beq G_M22188_IG244-;; size=108 bbWeight=1 PerfScore 45.00+;; size=112 bbWeight=1 PerfScore 45.50 G_M22188_IG243: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -5478,8 +5479,9 @@ G_M22188_IG321: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG322: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x08]- ldp w1, w2, [x20, #0x08]- ldp w3, w4, [x20, #0x10]+ mov w1, w0+ ldp w2, w3, [x20, #0x0C]+ ldr w4, [x20, #0x14] madd w2, w3, w4, w2 ldp w3, w4, [x20, #0x14] msub w2, w3, w4, w2@@ -5496,7 +5498,7 @@ G_M22188_IG322: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, movk w0, #0xD1FFAB1E LSL #16 cmp w21, w0 beq G_M22188_IG324-;; size=76 bbWeight=1 PerfScore 37.50+;; size=80 bbWeight=1 PerfScore 38.00 G_M22188_IG323: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8374,7 +8376,7 @@ G_M22188_IG497: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG498: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w0, w0, w1 ldr w1, [x20, #0x20] add w0, w1, w0@@ -8384,7 +8386,7 @@ G_M22188_IG498: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, msub w21, w1, w2, w0 cmn w21, #20 beq G_M22188_IG500-;; size=44 bbWeight=1 PerfScore 21.50+;; size=44 bbWeight=1 PerfScore 19.00 G_M22188_IG499: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8408,13 +8410,13 @@ G_M22188_IG499: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG500: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w0, w0, w1 ldr w1, [x20, #0x20] add w21, w1, w0 cmp w21, #73 beq G_M22188_IG502-;; size=28 bbWeight=1 PerfScore 13.00+;; size=28 bbWeight=1 PerfScore 10.50 G_M22188_IG501: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8439,11 +8441,11 @@ G_M22188_IG501: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { G_M22188_IG502: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x20] ldr w1, [x20, #0x10]- ldr w2, [x20, #0x10]+ mov w2, w1 madd w21, w1, w2, w0 cmp w21, #73 beq G_M22188_IG504-;; size=24 bbWeight=1 PerfScore 12.50+;; size=24 bbWeight=1 PerfScore 10.00 G_M22188_IG503: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8467,11 +8469,11 @@ G_M22188_IG503: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG504: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w21, w0, w1 cmp w21, #4 beq G_M22188_IG506-;; size=20 bbWeight=1 PerfScore 9.50+;; size=20 bbWeight=1 PerfScore 7.00 G_M22188_IG505: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8495,11 +8497,11 @@ G_M22188_IG505: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG506: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w21, w0, w1 cmp w21, #4 beq G_M22188_IG508-;; size=20 bbWeight=1 PerfScore 9.50+;; size=20 bbWeight=1 PerfScore 7.00 G_M22188_IG507: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8523,11 +8525,11 @@ G_M22188_IG507: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG508: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w21, w0, w1 cmp w21, #4 beq G_M22188_IG510-;; size=20 bbWeight=1 PerfScore 9.50+;; size=20 bbWeight=1 PerfScore 7.00 G_M22188_IG509: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8551,11 +8553,11 @@ G_M22188_IG509: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG510: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w21, w0, w1 cmp w21, #4 beq G_M22188_IG512-;; size=20 bbWeight=1 PerfScore 9.50+;; size=20 bbWeight=1 PerfScore 7.00 G_M22188_IG511: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8580,11 +8582,11 @@ G_M22188_IG511: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { G_M22188_IG512: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x20] ldr w1, [x20, #0x10]- ldr w2, [x20, #0x10]+ mov w2, w1 madd w21, w1, w2, w0 cmp w21, #73 beq G_M22188_IG514-;; size=24 bbWeight=1 PerfScore 12.50+;; size=24 bbWeight=1 PerfScore 10.00 G_M22188_IG513: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8608,13 +8610,13 @@ G_M22188_IG513: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG514: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w0, w0, w1 ldr w1, [x20, #0x20] add w21, w1, w0 cmp w21, #73 beq G_M22188_IG516-;; size=28 bbWeight=1 PerfScore 13.00+;; size=28 bbWeight=1 PerfScore 10.50 G_M22188_IG515: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8870,13 +8872,13 @@ G_M22188_IG531: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG532: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w0, w0, w1 ldr w1, [x20, #0x20] add w21, w1, w0 cmp w21, #73 beq G_M22188_IG534-;; size=28 bbWeight=1 PerfScore 13.00+;; size=28 bbWeight=1 PerfScore 10.50 G_M22188_IG533: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -8900,7 +8902,7 @@ G_M22188_IG533: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 { ;; size=60 bbWeight=0.50 PerfScore 5.75 G_M22188_IG534: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref, isz ldr w0, [x20, #0x10]- ldr w1, [x20, #0x10]+ mov w1, w0 mul w0, w0, w1 ldr w1, [x20, #0x20] add w0, w1, w0@@ -8910,7 +8912,7 @@ G_M22188_IG534: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, msub w21, w1, w2, w0 cmp w21, #0xD1FFAB1E beq G_M22188_IG536-;; size=44 bbWeight=1 PerfScore 21.50+;; size=44 bbWeight=1 PerfScore 19.00 G_M22188_IG535: ; bbWeight=0.50, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, byref movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL #16@@ -9063,7 +9065,7 @@ G_M22188_IG538: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, msub w2, w3, w4, w2 madd w0, w2, w1, w0 ldr w1, [x20, #0x10]- ldr w2, [x20, #0x10]+ mov w2, w1 mul w1, w1, w2 ldr w2, [x20, #0x20] add w1, w2, w1@@ -9076,7 +9078,7 @@ G_M22188_IG538: ; bbWeight=1, gcrefRegs=100000 {x20}, byrefRegs=0000 {}, movk w0, #0xD1FFAB1E LSL #16 cmp w21, w0 beq G_M22188_IG540-;; size=244 bbWeight=1 PerfScore 124.50+;; size=244 bbWeight=1 PerfScore 122.00 G_M22188_IG539: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref ; gcrRegs -[x20] movz x0, #0xD1FFAB1E@@ -9115,7 +9117,7 @@ G_M22188_IG541: ; bbWeight=1, epilog, nogc, extend ret lr ;; size=16 bbWeight=1 PerfScore 5.00-; Total bytes of code 26468, prolog size 16, PerfScore 8659.05, instruction count 6617, allocated bytes for code 26468 (MethodHash=5b1ca953) for method CseTest.Test_Main:Main():int+; Total bytes of code 26476, prolog size 16, PerfScore 8630.85, instruction count 6619, allocated bytes for code 26476 (MethodHash=5b1ca953) for method CseTest.Test_Main:Main():int ; ============================================================ Unwind Info:@@ -9126,7 +9128,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0- Function Length : 6617 (0x019d9) Actual length = 26468 (0x006764)+ Function Length : 6619 (0x019db) Actual length = 26476 (0x00676c) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) DetailsImprovements/regressions per collection
Context information
jit-analyze outputbenchmarks.run.linux.arm64.checked.mchTo reproduce these diffs on Windows arm64: Detail diffslibraries_tests.pmi.linux.arm64.checked.mchTo reproduce these diffs on Windows arm64: Detail diffslibraries.crossgen2.linux.arm64.checked.mchTo reproduce these diffs on Windows arm64: Detail diffslibraries.pmi.linux.arm64.checked.mchTo reproduce these diffs on Windows arm64: Detail diffscoreclr_tests.run.linux.arm64.checked.mchTo reproduce these diffs on Windows arm64: Detail diffsThe above summary shows one regression. The issue there is that the code had five loads in the following order. Previously, the last four loads were converted to ldp as Because of the first two loads from the same location, the current patch changed the second load to mov. Consequently, all the following loads couldn't be converted to pairwise loads. It generated: |
ghost commentedMar 15, 2023
Tagging subscribers to this area:@JulieLeeMSFT,@jakobbotsch,@kunalspathak |
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a74nh commentedMar 16, 2023
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a74nh commentedMar 17, 2023
Probably also@BruceForstall too |
| } | ||
| // If we have a second LDR instruction from the same source, then try to replace it with a MOV. | ||
| if (IsOptimizableLdrToMov(ins,reg1,reg2,imm,size,fmt)) |
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I'm wondering if this creates a GC hole? Should this be gated by a!localVar check, or even better emitIns_Mov variant that handles varx/offs.
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I don't see gc liveness changing in the diffs so probably it should be fine.
Here, in 1st example,x1 is reported to have gc value before and after. Same in other places.
I will still run gcstress now.
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Also the gcstress pipelines are clean.
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kunalspathak commentedMar 20, 2023
/azp run runtime-coreclr runtime-coreclr gcstress0x3-gcstress0xc |
| No pipelines are associated with this pull request. |
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SwapnilGaikwad commentedMar 20, 2023
/azp run runtime-coreclr jitstress |
| Commenter does not have sufficient privileges for PR 83458 in repo dotnet/runtime |
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SwapnilGaikwad commentedMar 20, 2023
It seems, it didn't kicked any jobs. |
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kunalspathak commentedMar 20, 2023
Kicked off internally -https://dev.azure.com/dnceng-public/public/_build/results?buildId=211187&view=results |
kunalspathak approved these changesMar 21, 2023
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LGTM. Thanks for your contribution!
| } | ||
| // If we have a second LDR instruction from the same source, then try to replace it with a MOV. | ||
| if (IsOptimizableLdrToMov(ins,reg1,reg2,imm,size,fmt)) |
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I don't see gc liveness changing in the diffs so probably it should be fine.
Here, in 1st example,x1 is reported to have gc value before and after. Same in other places.
I will still run gcstress now.
| } | ||
| // If we have a second LDR instruction from the same source, then try to replace it with a MOV. | ||
| if (IsOptimizableLdrToMov(ins,reg1,reg2,imm,size,fmt)) |
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Also the gcstress pipelines are clean.
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I noticed a potential bug or missing optimization.
| // instruction into a cheaper "mov" instruction. | ||
| // | ||
| // Examples: ldr w1, [x20, #0x10] | ||
| // ldr w2, [x20, #0x10] => mov w1, w2 |
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Shouldn't this bemov w2, w1?
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True, I'll fix this.
| } | ||
| regNumber prevReg1 = emitLastIns->idReg1(); | ||
| regNumber prevReg2 = emitLastIns->idReg2(); |
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prevReg2 here is encoded. Doesn't it needprevReg2 = encodingZRtoSP(prevReg2)?
(Did you see any diffs with a base register ofSP?)
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The check ispulled up in theOptimizeLdrStr().
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The check you refer to,reg2 = encodingZRtoSP(reg2);, only applies to thereg2 argument. TheprevReg2 here is still in the encoded form, meaning ifreg2 == SP (after decoding) it will never matchprevReg2 == ZR (before decoding).
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@BruceForstall - Does that mean that we would have lost some opportunities because of not encoding it to SP?
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Actually, now I am confused - why we have to do theencodingZRtoSP(reg2) for this optimization?
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@BruceForstall - Does that mean that we would have lost some opportunities because of not encoding it to SP?
That's my thinking. However, when I addprevReg2 = encodingZRtoSP(prevReg2), there are no diffs. If I addassert(prevReg2 != REG_ZR) there are hits, so obviously there are cases where we are incorrectly comparing against ZR instead of SP. There might not be any opportunities due to the way we generate code.
Actually, now I am confused - why we have to do the encodingZRtoSP(reg2) for this optimization?
The problem is that we store the encoded register value in the instrDesc -- and arm64 encodings sometimes encode SP as ZR in the instruction encoding bits.
It's possibly unfortunate that we (long ago) decided to store the encoded form into igReg1()/idReg2()/etc. An alternative would be to store the "actual" register in the instrDesc and do the SP->ZR encoding when we're building the instruction bits. This would eliminate the need to "un-encode" which we do in theemitDispIns code path (to display/output the textual instruction). And it would simplify thinking about peephole optimizations (which were not considered when this was designed).
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An alternative would be to store the "actual" register in the instrDesc
Unfortunately, REG_SP is 64 and REGNUM_BITS is 6, so we don't have enough bits currently to store REG_SP in idReg1/idReg2/etc. Bumping REGNUM_BITS to 7 just to allow this might have negative effects on memory usage or other instrDesc effects.
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Thanks for the explanation@BruceForstall, I'll add a new PR addressing the comments 👍
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Created#83886
Comment on lines +16421 to +16422
| // Either register 1 or previous register 1 is not a general register | ||
| // or the zero register, so we cannot optimise. |
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This comment is wrong (or confusing) sinceisGeneralRegister doesn't include ZR. (So we don't optimize if one is ZR, which makes sense)
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Sure, I'll change this. Should I coalesce these changes with another PR?
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If you have an additional PR coming, it's fine to add the comment changes to that PR.
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Fixes#35141