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Commitdb938cc

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PGPRO-8546: Add core patch for REL_11_STABLE. Don't generate deforming jit code for tuples without user attributes. Without this patch an "ERROR: unknown alignment" may occur during jit compilation.
Tags: pg_pathman
1 parent789e111 commitdb938cc

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2 files changed

+55
-2
lines changed

2 files changed

+55
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‎README.md‎

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@@ -13,8 +13,8 @@ The `pg_pathman` module provides optimized partitioning mechanism and functions
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The extension is compatible with:
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* PostgreSQL11,12, 13;
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* PostgreSQL with core-patch: 14, 15;
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* PostgreSQL 12, 13;
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* PostgreSQL with core-patch:11,14, 15;
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* Postgres Pro Standard 11, 12, 13, 14, 15;
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* Postgres Pro Enterprise;
2020

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@@ -0,0 +1,53 @@
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diff --git a/src/backend/jit/llvm/llvmjit_deform.c b/src/backend/jit/llvm/llvmjit_deform.c
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index 6384ac940d8..8b4f731e7a8 100644
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--- a/src/backend/jit/llvm/llvmjit_deform.c
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+++ b/src/backend/jit/llvm/llvmjit_deform.c
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@@ -104,6 +104,10 @@ slot_compile_deform(LLVMJitContext *context, TupleDesc desc, int natts)
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intattnum;
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+/* don't generate code for tuples without user attributes */
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+if (desc->natts == 0)
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+return NULL;
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+
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mod = llvm_mutable_module(context);
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funcname = llvm_expand_funcname(context, "deform");
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diff --git a/src/backend/jit/llvm/llvmjit_expr.c b/src/backend/jit/llvm/llvmjit_expr.c
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index 12138e49577..8638ebc4ba1 100644
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--- a/src/backend/jit/llvm/llvmjit_expr.c
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+++ b/src/backend/jit/llvm/llvmjit_expr.c
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@@ -274,6 +274,7 @@ llvm_compile_expr(ExprState *state)
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LLVMValueRef v_slot;
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LLVMBasicBlockRef b_fetch;
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LLVMValueRef v_nvalid;
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+LLVMValueRef l_jit_deform = NULL;
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b_fetch = l_bb_before_v(opblocks[i + 1],
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"op.%d.fetch", i);
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@@ -336,17 +337,20 @@ llvm_compile_expr(ExprState *state)
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*/
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if (desc && (context->base.flags & PGJIT_DEFORM))
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{
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-LLVMValueRef params[1];
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-LLVMValueRef l_jit_deform;
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-
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l_jit_deform =
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-slot_compile_deform(context, desc,
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+slot_compile_deform(context,
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+desc,
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op->d.fetch.last_var);
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+}
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+
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+if (l_jit_deform)
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+{
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+LLVMValueRef params[1];
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+
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params[0] = v_slot;
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LLVMBuildCall(b, l_jit_deform,
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params, lengthof(params), "");
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-
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}
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else
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{

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