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| author | Evan Cheng <evan.cheng@apple.com> | 2009-04-27 17:36:47 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-04-27 17:36:47 +0000 |
| commit | d521bc983b32da71b85d42dd30da87079afa5728 (patch) | |
| tree | 6e7db4ba66bab69bb8ce8dc774a54618d21f5563 /test/CodeGen/X86 | |
| parent | 27e4666c20650f2b10d93b98b7a0625a363df9df (diff) | |
| download | external_llvm-d521bc983b32da71b85d42dd30da87079afa5728.zip external_llvm-d521bc983b32da71b85d42dd30da87079afa5728.tar.gz external_llvm-d521bc983b32da71b85d42dd30da87079afa5728.tar.bz2 | |
Fix PR4056. It's possible a physical register def is dead if its implicit use is deleted by two-address pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70213 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86')
| -rw-r--r-- | test/CodeGen/X86/2009-04-27-LiveIntervalsAssert.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-04-27-LiveIntervalsAssert.ll b/test/CodeGen/X86/2009-04-27-LiveIntervalsAssert.ll new file mode 100644 index 0000000..1b757b1 --- /dev/null +++ b/test/CodeGen/X86/2009-04-27-LiveIntervalsAssert.ll @@ -0,0 +1,24 @@ +; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin9 +; PR4056 + +define void @int163(i32 %p_4, i32 %p_5) nounwind { +entry: + %0 = tail call i32 @bar(i32 1) nounwind ; <i32> [#uses=2] + %1 = icmp sgt i32 %0, 7 ; <i1> [#uses=1] + br i1 %1, label %foo.exit, label %bb.i + +bb.i: ; preds = %entry + %2 = lshr i32 1, %0 ; <i32> [#uses=1] + %3 = icmp eq i32 %2, 0 ; <i1> [#uses=1] + %4 = zext i1 %3 to i32 ; <i32> [#uses=1] + %.p_5 = shl i32 %p_5, %4 ; <i32> [#uses=1] + br label %foo.exit + +foo.exit: ; preds = %bb.i, %entry + %5 = phi i32 [ %.p_5, %bb.i ], [ %p_5, %entry ] ; <i32> [#uses=1] + %6 = icmp eq i32 %5, 0 ; <i1> [#uses=0] + %7 = tail call i32 @bar(i32 %p_5) nounwind ; <i32> [#uses=0] + ret void +} + +declare i32 @bar(i32) |