diff options
| author | Mon P Wang <wangmp@apple.com> | 2009-02-04 01:16:59 +0000 |
|---|---|---|
| committer | Mon P Wang <wangmp@apple.com> | 2009-02-04 01:16:59 +0000 |
| commit | 7bcaefaf5946aa2e902fead5eab321787e38eaf1 (patch) | |
| tree | b11f107836604cf943c221b5d2c0c09c94bea11e /test | |
| parent | 556b20ab46520ac53bb689d3c70160bc9d496a3f (diff) | |
| download | external_llvm-7bcaefaf5946aa2e902fead5eab321787e38eaf1.zip external_llvm-7bcaefaf5946aa2e902fead5eab321787e38eaf1.tar.gz external_llvm-7bcaefaf5946aa2e902fead5eab321787e38eaf1.tar.bz2 | |
Fixes a case where we generate an incorrect mask for pshfhw in the presence
of undefs and incorrectly determining if we have punpckldq.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63702 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/vec_shuffle-30.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/X86/vec_shuffle-30.ll b/test/CodeGen/X86/vec_shuffle-30.ll new file mode 100644 index 0000000..38f02fe --- /dev/null +++ b/test/CodeGen/X86/vec_shuffle-30.ll @@ -0,0 +1,23 @@ +; RUN: llvm-as < %s | llc -march=x86 -mattr=sse41 -disable-mmx -o %t -f +; RUN: grep pshufhw %t | grep 161 | count 1 +; RUN: grep pslldq %t | count 1 + + + +; Test case when creating pshufhw, we incorrectly set the higher order bit +; for an undef, +define void @test(<8 x i16>* %dest, <8 x i16> %in) { +entry: + %0 = load <8 x i16>* %dest + %1 = shufflevector <8 x i16> %0, <8 x i16> %in, <8 x i32> < i32 0, i32 1, i32 2, i32 3, i32 13, i32 undef, i32 14, i32 14> + store <8 x i16> %1, <8 x i16>* %dest + ret void +} + +; A test case where we shouldn't generate a punpckldq but a pshufd and a pslldq +define void @test2(<4 x i32>* %dest, <4 x i32> %in) { +entry: + %0 = shufflevector <4 x i32> %in, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> < i32 undef, i32 5, i32 undef, i32 2> + store <4 x i32> %0, <4 x i32>* %dest + ret void +}
\ No newline at end of file |