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| author | Evan Cheng <evan.cheng@apple.com> | 2008-06-25 20:52:59 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-06-25 20:52:59 +0000 |
| commit | ab26227c8c9adce91a606a3691d4da08a9c8551c (patch) | |
| tree | 701541c43568917524ac8ce65c7d11f29ac184d1 /test/CodeGen/X86/2008-06-25-VecISelBug.ll | |
| parent | 041cde26eaf4ef6171ff1a44aeedd08d7a1cba6c (diff) | |
| download | llvm-ab26227c8c9adce91a606a3691d4da08a9c8551c.tar.gz llvm-ab26227c8c9adce91a606a3691d4da08a9c8551c.tar.bz2 llvm-ab26227c8c9adce91a606a3691d4da08a9c8551c.tar.xz | |
- Fix a x86 vector isel bug: illegal transformation of a vector_shuffle into a
shift.
- Add a readme entry for a missing vector_shuffle optimization that results in
awful codegen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52740 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2008-06-25-VecISelBug.ll')
| -rw-r--r-- | test/CodeGen/X86/2008-06-25-VecISelBug.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2008-06-25-VecISelBug.ll b/test/CodeGen/X86/2008-06-25-VecISelBug.ll new file mode 100644 index 0000000000..f369986fbc --- /dev/null +++ b/test/CodeGen/X86/2008-06-25-VecISelBug.ll @@ -0,0 +1,9 @@ +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | not grep pslldq + +define void @t() nounwind { +entry: + %tmp1 = shufflevector <4 x float> zeroinitializer, <4 x float> < float 0.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00 >, <4 x i32> < i32 0, i32 1, i32 4, i32 5 > + %tmp2 = insertelement <4 x float> %tmp1, float 1.000000e+00, i32 3 + store <4 x float> %tmp2, <4 x float>* null, align 16 + unreachable +} |