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| author | Michael Liao <michael.liao@intel.com> | 2013-10-23 18:32:43 +0000 |
|---|---|---|
| committer | Michael Liao <michael.liao@intel.com> | 2013-10-23 18:32:43 +0000 |
| commit | 531f025361555e7a695eb559ec02645c054ee146 (patch) | |
| tree | 4b363afb627fe1266a9c96bad74b8581f694f4dd /test/CodeGen/X86 | |
| parent | df5ed1b08acf0f278275bce15ffc6d2cf953816d (diff) | |
| download | llvm-531f025361555e7a695eb559ec02645c054ee146.tar.gz llvm-531f025361555e7a695eb559ec02645c054ee146.tar.bz2 llvm-531f025361555e7a695eb559ec02645c054ee146.tar.xz | |
Fix PR17631
- Skip instructions added in prolog. For specific targets, prolog may
insert helper function calls (e.g. _chkstk will be called when
there're more than 4K bytes allocated on stack). However, these
helpers don't use/def YMM/XMM registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193261 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86')
| -rw-r--r-- | test/CodeGen/X86/pr17631.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/X86/pr17631.ll b/test/CodeGen/X86/pr17631.ll new file mode 100644 index 0000000000..a572ff2e3b --- /dev/null +++ b/test/CodeGen/X86/pr17631.ll @@ -0,0 +1,22 @@ +; RUN: llc < %s -mcpu=core-avx-i -mtriple=i386-pc-win32 | FileCheck %s + +%struct_type = type { [64 x <8 x float>], <8 x float> } + +; Function Attrs: nounwind readnone +declare i32 @llvm.x86.avx.movmsk.ps.256(<8 x float>) + +; Function Attrs: nounwind +define i32 @equal(<8 x i32> %A) { +allocas: + %first_alloc = alloca [64 x <8 x i32>] + %second_alloc = alloca %struct_type + + %A1 = bitcast <8 x i32> %A to <8 x float> + %A2 = call i32 @llvm.x86.avx.movmsk.ps.256(<8 x float> %A1) + ret i32 %A2 +} + +; CHECK: equal +; CHECK-NOT: vzeroupper +; CHECK: _chkstk +; CHECK: ret |