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| author | Dan Gohman <gohman@apple.com> | 2010-03-09 01:53:33 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-03-09 01:53:33 +0000 |
| commit | 93452cebda66ae7e1e9d746c697da8cc0dbe9801 (patch) | |
| tree | 8f7825f991b5478c1acbdec5b430b542bf7a6ea5 /llvm/test/Transforms/LCSSA/unreachable-use.ll | |
| parent | a552246b3ddf6db6a0a7f538bee16a1fc0a63b41 (diff) | |
| download | bcm5719-llvm-93452cebda66ae7e1e9d746c697da8cc0dbe9801.tar.gz bcm5719-llvm-93452cebda66ae7e1e9d746c697da8cc0dbe9801.zip | |
Make isLCSSA ignore uses in blocks not reachable from the entry block,
as LCSSA no longer transforms such uses.
llvm-svn: 98033
Diffstat (limited to 'llvm/test/Transforms/LCSSA/unreachable-use.ll')
| -rw-r--r-- | llvm/test/Transforms/LCSSA/unreachable-use.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LCSSA/unreachable-use.ll b/llvm/test/Transforms/LCSSA/unreachable-use.ll new file mode 100644 index 00000000000..c389c9cfa87 --- /dev/null +++ b/llvm/test/Transforms/LCSSA/unreachable-use.ll @@ -0,0 +1,27 @@ +; RUN: opt < %s -lcssa -S -verify-loop-info | grep {\[%\]tmp33 = load i1\\*\\* \[%\]tmp} +; PR6546 + +; LCSSA doesn't need to transform uses in blocks not reachable +; from the entry block. + +define fastcc void @dfs() nounwind { +bb: + br label %bb44 + +bb44: + br i1 undef, label %bb7, label %bb45 + +bb7: + %tmp = bitcast i1** undef to i1** + br label %bb15 + +bb15: + br label %bb44 + +bb32: + %tmp33 = load i1** %tmp, align 8 + br label %bb45 + +bb45: + unreachable +} |
