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Fix PR5551 by not ignoring the top level constantexpr when
folding a load from constant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90545 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -432,7 +432,7 @@ Constant *llvm::ConstantFoldLoadFromConstPtr(Constant *C,
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// Instead of loading constant c string, use corresponding integer value
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// directly if string length is small enough.
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std::string Str;
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if (TD && GetConstantStringInfo(CE->getOperand(0), Str) && !Str.empty()) {
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if (TD && GetConstantStringInfo(CE, Str) && !Str.empty()) {
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unsigned StrLen = Str.length();
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const Type *Ty = cast<PointerType>(CE->getType())->getElementType();
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unsigned NumBits = Ty->getPrimitiveSizeInBits();
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@ -101,3 +101,12 @@ entry:
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}
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; PR5551
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@test12g = private constant [6 x i8] c"a\00b\00\00\00"
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define i16 @test12() {
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%a = load i16* getelementptr inbounds ([3 x i16]* bitcast ([6 x i8]* @test12g to [3 x i16]*), i32 0, i64 1)
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ret i16 %a
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; CHECK: @test12
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; CHECK: ret i16 98
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}
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