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| author | Evan Cheng <evan.cheng@apple.com> | 2009-11-16 21:56:03 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-11-16 21:56:03 +0000 |
| commit | 600c04369775b014073ec295545ff9dd2a7f2fed (patch) | |
| tree | 3f0afbd3c491a0249fb7eacbf4d488ad083a7db5 /test | |
| parent | f76a3d634f85783783d75bf4d8e736b178e4f5e6 (diff) | |
| download | external_llvm-600c04369775b014073ec295545ff9dd2a7f2fed.zip external_llvm-600c04369775b014073ec295545ff9dd2a7f2fed.tar.gz external_llvm-600c04369775b014073ec295545ff9dd2a7f2fed.tar.bz2 | |
- Check memoperand alignment instead of checking stack alignment. Most load / store folding instructions are not referencing spill stack slots.
- Mark MOVUPSrm re-materializable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88974 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll b/test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll new file mode 100644 index 0000000..3ce9edb --- /dev/null +++ b/test/CodeGen/X86/2009-11-16-UnfoldMemOpBug.ll @@ -0,0 +1,28 @@ +; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s +; rdar://7396984 + +@str = private constant [28 x i8] c"xxxxxxxxxxxxxxxxxxxxxxxxxxx\00", align 1 + +define void @t(i32 %count) ssp nounwind { +entry: +; CHECK: t: +; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip) +; CHECK: movups L_str(%rip), %xmm0 + %tmp0 = alloca [60 x i8], align 1 + %tmp1 = getelementptr inbounds [60 x i8]* %tmp0, i64 0, i64 0 + br label %bb1 + +bb1: +; CHECK: LBB1_1: +; CHECK: movaps %xmm0, (%rsp) + %tmp2 = phi i32 [ %tmp3, %bb1 ], [ 0, %entry ] + call void @llvm.memcpy.i64(i8* %tmp1, i8* getelementptr inbounds ([28 x i8]* @str, i64 0, i64 0), i64 28, i32 1) + %tmp3 = add i32 %tmp2, 1 + %tmp4 = icmp eq i32 %tmp3, %count + br i1 %tmp4, label %bb2, label %bb1 + +bb2: + ret void +} + +declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind |