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| author | Dinesh Dwivedi <dinesh.d@samsung.com> | 2014-06-17 14:34:19 +0000 |
|---|---|---|
| committer | Dinesh Dwivedi <dinesh.d@samsung.com> | 2014-06-17 14:34:19 +0000 |
| commit | 199da600f3afd6804af2077203a2d4086d7242a9 (patch) | |
| tree | c8ab06ea6cbcd20fd797c90ff36c2e005b1fcf75 /lib/Transforms | |
| parent | 3b2a2563322161a609fd6672af2d879c6bd65e8d (diff) | |
| download | llvm-199da600f3afd6804af2077203a2d4086d7242a9.tar.gz llvm-199da600f3afd6804af2077203a2d4086d7242a9.tar.bz2 llvm-199da600f3afd6804af2077203a2d4086d7242a9.tar.xz | |
Fixed jump threading going to infinite loop.
This patch add code to remove unreachable blocks from function
as they may cause jump threading to stuck in infinite loop.
Differential Revision: http://reviews.llvm.org/D3991
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211103 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Scalar/JumpThreading.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp index 230a381593..e501ff29d0 100644 --- a/lib/Transforms/Scalar/JumpThreading.cpp +++ b/lib/Transforms/Scalar/JumpThreading.cpp @@ -158,6 +158,9 @@ bool JumpThreading::runOnFunction(Function &F) { TLI = &getAnalysis<TargetLibraryInfo>(); LVI = &getAnalysis<LazyValueInfo>(); + // Remove unreachable blocks from function as they may result in infinite loop. + removeUnreachableBlocks(F); + FindLoopHeaders(F); bool Changed, EverChanged = false; |