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| author | Dale Johannesen <dalej@apple.com> | 2009-05-11 21:54:13 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2009-05-11 21:54:13 +0000 |
| commit | bf06f6a6f1be0802ad7b761138ecba568814008a (patch) | |
| tree | 1d152e8f763dfb0ec243b41d4e775120babd9deb /test | |
| parent | fb3bd472a1a987a97754137914016dbd78c7d5c7 (diff) | |
| download | external_llvm-bf06f6a6f1be0802ad7b761138ecba568814008a.zip external_llvm-bf06f6a6f1be0802ad7b761138ecba568814008a.tar.gz external_llvm-bf06f6a6f1be0802ad7b761138ecba568814008a.tar.bz2 | |
Fix PR4188. TailMerging can't tolerate inexact
sucessor info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71478 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/2009-05-11-tailmerge-crash.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-05-11-tailmerge-crash.ll b/test/CodeGen/X86/2009-05-11-tailmerge-crash.ll new file mode 100644 index 0000000..8178725 --- /dev/null +++ b/test/CodeGen/X86/2009-05-11-tailmerge-crash.ll @@ -0,0 +1,23 @@ +; RUN: llvm-as < %s | llc -march=x86 +; PR4188 +; ModuleID = '<stdin>' +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" +target triple = "i386-apple-darwin9.6" +@g_9 = external global i32 ; <i32*> [#uses=1] + +define i32 @int86(i32 %p_87) nounwind { +entry: + %0 = trunc i32 %p_87 to i8 ; <i8> [#uses=1] + %1 = icmp ne i8 %0, 0 ; <i1> [#uses=1] + br label %bb + +bb: ; preds = %bb.i, %bb, %entry + %2 = volatile load i32* @g_9, align 4 ; <i32> [#uses=2] + %3 = icmp sgt i32 %2, 1 ; <i1> [#uses=1] + %4 = and i1 %3, %1 ; <i1> [#uses=1] + br i1 %4, label %bb.i, label %bb + +bb.i: ; preds = %bb + %5 = icmp sgt i32 0, %2 ; <i1> [#uses=0] + br label %bb +} |