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Cache ROS constructed from arrays of constants (remaining types)#69820

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Merged
jcouv merged 15 commits intodotnet:mainfromjcouv:cache-arrays
Dec 15, 2023
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337 changes: 205 additions & 132 deletionssrc/Compilers/CSharp/Portable/CodeGen/EmitArrayInitializer.cs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -74,7 +74,7 @@ private void EmitReadOnlySpanFromArrayExpression(BoundReadOnlySpanFromArray expr
this._module.Compilation.IsReadOnlySpanType(typeTo),
"only special kinds of conversions involving ReadOnlySpan may be handled in emit");

if(!TryEmitReadonlySpanAsBlobWrapper(typeTo,operand,used,inPlaceTarget:null,avoidInPlace:out_))
if(!TryEmitOptimizedReadonlySpanCreation(typeTo,operand,used,inPlaceTarget:null,avoidInPlace:out_))
{
// there are several reasons that could prevent us from emitting a wrapper
// in such case we just emit the operand and then invoke the conversion method
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8 changes: 4 additions & 4 deletionssrc/Compilers/CSharp/Portable/CodeGen/EmitExpression.cs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -2417,7 +2417,7 @@ private void EmitObjectCreationExpression(BoundObjectCreationExpression expressi
}

// ReadOnlySpan may just refer to the blob, if possible.
if(TryEmitReadonlySpanAsBlobWrapper(expression,used,inPlaceTarget:null,out_))
if(TryEmitOptimizedReadonlySpan(expression,used,inPlaceTarget:null,out_))
{
return;
}
Expand All@@ -2436,15 +2436,15 @@ private void EmitObjectCreationExpression(BoundObjectCreationExpression expressi
}
}

privateboolTryEmitReadonlySpanAsBlobWrapper(BoundObjectCreationExpressionexpression,boolused,BoundExpressioninPlaceTarget,outboolavoidInPlace)
privateboolTryEmitOptimizedReadonlySpan(BoundObjectCreationExpressionexpression,boolused,BoundExpressioninPlaceTarget,outboolavoidInPlace)
{
intargumentsLength=expression.Arguments.Length;
avoidInPlace=false;
return((argumentsLength==1&&
expression.Constructor.OriginalDefinition==(object)this._module.Compilation.GetWellKnownTypeMember(WellKnownMember.System_ReadOnlySpan_T__ctor_Array))||
(argumentsLength==3&&
expression.Constructor.OriginalDefinition==(object)this._module.Compilation.GetWellKnownTypeMember(WellKnownMember.System_ReadOnlySpan_T__ctor_Array_Start_Length)))&&
TryEmitReadonlySpanAsBlobWrapper((NamedTypeSymbol)expression.Type,expression.Arguments[0],used,inPlaceTarget,outavoidInPlace,
TryEmitOptimizedReadonlySpanCreation((NamedTypeSymbol)expression.Type,expression.Arguments[0],used,inPlaceTarget,outavoidInPlace,
start:argumentsLength==3?expression.Arguments[1]:null,
length:argumentsLength==3?expression.Arguments[2]:null);
}
Expand DownExpand Up@@ -2666,7 +2666,7 @@ private bool TryInPlaceCtorCall(BoundExpression target, BoundObjectCreationExpre
Debug.Assert(TargetIsNotOnHeap(target),"in-place construction target should not be on heap");

// ReadOnlySpan may just refer to the blob, if possible.
if(TryEmitReadonlySpanAsBlobWrapper(objCreation,used,target,outboolavoidInPlace))
if(TryEmitOptimizedReadonlySpan(objCreation,used,target,outboolavoidInPlace))
{
returntrue;
}
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