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author | Chris Lattner <sabre@nondot.org> | 2006-10-28 06:45:33 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2006-10-28 06:45:33 +0000 |
commit | a6eb7e0803cb4991de670db72f0079115e8b99fe (patch) | |
tree | 1dae455d0933d38f562259aa494881c22efb0a10 /llvm/lib/Transforms | |
parent | 80ea207bfa1fc00f0970fc8beb1c632e93965260 (diff) | |
download | bcm5719-llvm-a6eb7e0803cb4991de670db72f0079115e8b99fe.tar.gz bcm5719-llvm-a6eb7e0803cb4991de670db72f0079115e8b99fe.zip |
break edges more intelligently
llvm-svn: 31257
Diffstat (limited to 'llvm/lib/Transforms')
-rw-r--r-- | llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp index 1c6acc6eef8..5b64e54f1f2 100644 --- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -378,7 +378,8 @@ static bool IVUseShouldUsePostIncValue(Instruction *User, Instruction *IV, // post-incremented value. for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) if (PN->getIncomingValue(i) == IV) { - SplitCriticalEdge(PN->getIncomingBlock(i), PN->getParent(), P); + SplitCriticalEdge(PN->getIncomingBlock(i), PN->getParent(), P, + true); // Splitting the critical edge can reduce the number of entries in this // PHI. e = PN->getNumIncomingValues(); @@ -582,7 +583,7 @@ void BasedUser::RewriteInstructionToUseNewBase(const SCEVHandle &NewBase, (PN->getParent() != L->getHeader() || !L->contains(PHIPred))) { // First step, split the critical edge. - SplitCriticalEdge(PHIPred, PN->getParent(), P); + SplitCriticalEdge(PHIPred, PN->getParent(), P, true); // Next step: move the basic block. In particular, if the PHI node // is outside of the loop, and PredTI is in the loop, we want to |