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| author | Evan Cheng <evan.cheng@apple.com> | 2008-05-10 06:46:49 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-05-10 06:46:49 +0000 |
| commit | 50d9e7289b86fa02b8f121f5aeceffb4b248a9b6 (patch) | |
| tree | 585588fc20e9d2ac38229aa6f7c15d97216a31d0 | |
| parent | 49ff6614102c8716e91c8e26f0b21e33dc4d66ee (diff) | |
| download | llvm-50d9e7289b86fa02b8f121f5aeceffb4b248a9b6.tar.gz llvm-50d9e7289b86fa02b8f121f5aeceffb4b248a9b6.tar.bz2 llvm-50d9e7289b86fa02b8f121f5aeceffb4b248a9b6.tar.xz | |
When transforming a vector_shuffle to a load, the base address must not be an undef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50940 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 2 | ||||
| -rw-r--r-- | test/CodeGen/X86/2008-05-09-ShuffleLoweringBug.ll | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index d2d76671e9..307aeae1b2 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -6283,6 +6283,8 @@ static bool EltsFromConsecutiveLoads(SDNode *N, SDOperand PermMask, return false; if (!Base) { Base = Elt.Val; + if (Base->getOpcode() == ISD::UNDEF) + return false; continue; } if (Elt.getOpcode() == ISD::UNDEF) diff --git a/test/CodeGen/X86/2008-05-09-ShuffleLoweringBug.ll b/test/CodeGen/X86/2008-05-09-ShuffleLoweringBug.ll new file mode 100644 index 0000000000..9bcd1f374d --- /dev/null +++ b/test/CodeGen/X86/2008-05-09-ShuffleLoweringBug.ll @@ -0,0 +1,10 @@ +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 + +define fastcc void @glgVectorFloatConversion() nounwind { + %tmp12745 = load <4 x float>* null, align 16 ; <<4 x float>> [#uses=1] + %tmp12773 = insertelement <4 x float> %tmp12745, float 1.000000e+00, i32 1 ; <<4 x float>> [#uses=1] + %tmp12774 = insertelement <4 x float> %tmp12773, float 0.000000e+00, i32 2 ; <<4 x float>> [#uses=1] + %tmp12775 = insertelement <4 x float> %tmp12774, float 1.000000e+00, i32 3 ; <<4 x float>> [#uses=1] + store <4 x float> %tmp12775, <4 x float>* null, align 16 + unreachable +} |