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author | Duncan Sands <baldrick@free.fr> | 2012-03-09 19:21:15 +0000 |
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committer | Duncan Sands <baldrick@free.fr> | 2012-03-09 19:21:15 +0000 |
commit | a8eb6bb408e84ceb468ceb409f4c87308e67b9eb (patch) | |
tree | 1a56fbfc23c417e2842326f46a40fe2b5a16f728 /lib/Transforms | |
parent | 07c32218f448b7637d4acad8e87ce7cfaef0277e (diff) | |
download | external_llvm-a8eb6bb408e84ceb468ceb409f4c87308e67b9eb.zip external_llvm-a8eb6bb408e84ceb468ceb409f4c87308e67b9eb.tar.gz external_llvm-a8eb6bb408e84ceb468ceb409f4c87308e67b9eb.tar.bz2 |
Add statistics on removed switch cases, and fix the phi statistic
to count the number of phis changed, not the number visited.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152425 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
-rw-r--r-- | lib/Transforms/Scalar/CorrelatedValuePropagation.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp b/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp index ffe4991..3fd72a4 100644 --- a/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp +++ b/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp @@ -28,6 +28,7 @@ STATISTIC(NumPhis, "Number of phis propagated"); STATISTIC(NumSelects, "Number of selects propagated"); STATISTIC(NumMemAccess, "Number of memory access targets propagated"); STATISTIC(NumCmps, "Number of comparisons propagated"); +STATISTIC(NumDeadCases, "Number of switch cases removed"); namespace { class CorrelatedValuePropagation : public FunctionPass { @@ -111,7 +112,8 @@ bool CorrelatedValuePropagation::processPHI(PHINode *P) { Changed = true; } - ++NumPhis; + if (Changed) + ++NumPhis; return Changed; } @@ -233,12 +235,14 @@ bool CorrelatedValuePropagation::processSwitch(SwitchInst *SI) { // This case never fires - remove it. CI.getCaseSuccessor()->removePredecessor(BB); SI->removeCase(CI); // Does not invalidate the iterator. + ++NumDeadCases; Changed = true; } else if (State == LazyValueInfo::True) { // This case always fires. Arrange for the switch to be turned into an // unconditional branch by replacing the switch condition with the case // value. SI->setCondition(Case); + NumDeadCases += SI->getNumCases(); Changed = true; break; } |