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authorJakob Stoklund Olesen <stoklund@2pi.dk>2012-04-25 18:01:32 +0000
committerJakob Stoklund Olesen <stoklund@2pi.dk>2012-04-25 18:01:32 +0000
commit165324cd7da5d4c534c52f7db51e6ef0c185cf5b (patch)
tree5a29f1c008a2c4fc6d869b627cecb0db8f775119
parenta0b0219a9e13ecd193eee604ab22ffc74b516b02 (diff)
Print IV chain numbers while collecting them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155567 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--lib/Transforms/Scalar/LoopStrengthReduce.cpp9
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index fe4700b36e7..803feb4fd72 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -2487,12 +2487,12 @@ void LSRInstance::ChainInstruction(Instruction *UserInst, Instruction *IVOper,
++NChains;
IVChainVec.resize(NChains);
ChainUsersVec.resize(NChains);
- DEBUG(dbgs() << "IV Head: (" << *UserInst << ") IV=" << *LastIncExpr
- << "\n");
+ DEBUG(dbgs() << "IV Chain#" << ChainIdx << " Head: (" << *UserInst
+ << ") IV=" << *LastIncExpr << "\n");
}
else
- DEBUG(dbgs() << "IV Inc: (" << *UserInst << ") IV+" << *LastIncExpr
- << "\n");
+ DEBUG(dbgs() << "IV Chain#" << ChainIdx << " Inc: (" << *UserInst
+ << ") IV+" << *LastIncExpr << "\n");
// Add this IV user to the end of the chain.
IVChainVec[ChainIdx].push_back(IVInc(UserInst, IVOper, LastIncExpr));
@@ -2551,6 +2551,7 @@ void LSRInstance::ChainInstruction(Instruction *UserInst, Instruction *IVOper,
/// loop latch. This will discover chains on side paths, but requires
/// maintaining multiple copies of the Chains state.
void LSRInstance::CollectChains() {
+ DEBUG(dbgs() << "Collecting IV Chains.\n");
SmallVector<ChainUsers, 8> ChainUsersVec;
SmallVector<BasicBlock *,8> LatchPath;