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| author | Devang Patel <dpatel@apple.com> | 2008-09-17 18:21:49 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2008-09-17 18:21:49 +0000 |
| commit | 7f9671ba37a0a75a85f8c869e7f487e380dc5950 (patch) | |
| tree | 32bed71d04db4cffd00a141d58c14bb8018963aa /llvm/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll | |
| parent | 6ff95305e691737af1f764b68e234d95967eb38c (diff) | |
| download | bcm5719-llvm-7f9671ba37a0a75a85f8c869e7f487e380dc5950.tar.gz bcm5719-llvm-7f9671ba37a0a75a85f8c869e7f487e380dc5950.zip | |
Do not hoist instruction above branch condition. The instruction may use branch condition.
llvm-svn: 56286
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll b/llvm/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll new file mode 100644 index 00000000000..b2d671da67f --- /dev/null +++ b/llvm/test/Transforms/SimplifyCFG/2008-09-17-SpeculativeHoist.ll @@ -0,0 +1,18 @@ +; RUN: llvm-as < %s | opt -simplifycfg -disable-output +; PR 2800 + +define void @foo() { +start: + %tmp = call i1 @bar( ) ; <i1> [#uses=4] + br i1 %tmp, label %brtrue, label %brfalse + +brtrue: ; preds = %start + %tmpnew = and i1 %tmp, %tmp ; <i1> [#uses=1] + br label %brfalse + +brfalse: ; preds = %brtrue, %start + %andandtmp.0 = phi i1 [ %tmp, %start ], [ %tmpnew, %brtrue ] ; <i1> [#uses=0] + ret void +} + +declare i1 @bar() |
