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PR10077: fix fast-isel of extractvalue of aggregate constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132676 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -841,8 +841,10 @@ FastISel::SelectExtractValue(const User *U) {
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DenseMap<const Value *, unsigned>::iterator I = FuncInfo.ValueMap.find(Op0);
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if (I != FuncInfo.ValueMap.end())
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ResultReg = I->second;
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else
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else if (isa<Instruction>(Op0))
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ResultReg = FuncInfo.InitializeRegForValue(Op0);
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else
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return false; // fast-isel can't handle aggregate constants at the moment
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// Get the actual result register, which is an offset from the base register.
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unsigned VTIndex = ComputeLinearIndex(AggTy, EVI->idx_begin(), EVI->idx_end());
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11
test/CodeGen/X86/fast-isel-agg-constant.ll
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11
test/CodeGen/X86/fast-isel-agg-constant.ll
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@ -0,0 +1,11 @@
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; RUN: llc < %s -march=x86-64 -O0 | FileCheck %s
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; Make sure fast-isel doesn't screw up aggregate constants.
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; (Failing out is okay, as long as we don't miscompile.)
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%bar = type { i32 }
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define i32 @foo() {
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%tmp = extractvalue %bar { i32 3 }, 0
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ret i32 %tmp
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; CHECK: movl $3, %eax
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}
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