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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 | cbac7f163099fda6f3c036920404e4b87ab33d2a (patch) | |
| tree | 5295b5cf0c0f8fefe128d11d63c443076160a70a /test | |
| parent | 5b9062cb3ad2a60f18e941ac42a2382302c46f24 (diff) | |
| download | external_llvm-cbac7f163099fda6f3c036920404e4b87ab33d2a.zip external_llvm-cbac7f163099fda6f3c036920404e4b87ab33d2a.tar.gz external_llvm-cbac7f163099fda6f3c036920404e4b87ab33d2a.tar.bz2 | |
Make isLCSSA ignore uses in blocks not reachable from the entry block,
as LCSSA no longer transforms such uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98033 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LCSSA/unreachable-use.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/LCSSA/unreachable-use.ll b/test/Transforms/LCSSA/unreachable-use.ll new file mode 100644 index 0000000..c389c9c --- /dev/null +++ b/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 +} |