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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2013-05-06 08:06:13 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2013-05-06 08:06:13 +0000 |
| commit | 2720248ae5b0201a7bdba57f3625869b578f2a5d (patch) | |
| tree | 3a23f207d543393796c63d67b5f492723e09f453 /test/CodeGen | |
| parent | 10c6d2c84c266ffb24ec1037e51fe79e579ecb60 (diff) | |
| download | external_llvm-2720248ae5b0201a7bdba57f3625869b578f2a5d.zip external_llvm-2720248ae5b0201a7bdba57f3625869b578f2a5d.tar.gz external_llvm-2720248ae5b0201a7bdba57f3625869b578f2a5d.tar.bz2 | |
Fix slightly too aggressive conact_vector optimization.
(Would sometimes optimize away conacts used to extend a vector with undef values)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181186 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/2013-05-06-ConactVectorCrash.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2013-05-06-ConactVectorCrash.ll b/test/CodeGen/X86/2013-05-06-ConactVectorCrash.ll new file mode 100644 index 0000000..9203417 --- /dev/null +++ b/test/CodeGen/X86/2013-05-06-ConactVectorCrash.ll @@ -0,0 +1,14 @@ +; RUN: llc < %s -march=x86 + +; Make sure this doesn't crash + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-pc-win32" + +define void @foo() { + %1 = shufflevector <3 x i8> undef, <3 x i8> undef, <2 x i32> <i32 0, i32 1> + %2 = shufflevector <2 x i8> %1, <2 x i8> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef> + %3 = shufflevector <4 x i8> undef, <4 x i8> %2, <4 x i32> <i32 0, i32 1, i32 4, i32 5> + store <4 x i8> %3, <4 x i8>* undef + ret void +} |