diff options
| author | Bob Wilson <bob.wilson@apple.com> | 2009-11-18 19:29:37 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2009-11-18 19:29:37 +0000 |
| commit | 8984e6ec8c5d52cfe49129c9f4d4cc395c865f7e (patch) | |
| tree | fd90eeec25350ffc2e9593fdc02583e5f152ecc2 /llvm/lib/CodeGen/BranchFolding.cpp | |
| parent | 63c8ef8256380fca457ee2fde534349467291c97 (diff) | |
| download | bcm5719-llvm-8984e6ec8c5d52cfe49129c9f4d4cc395c865f7e.tar.gz bcm5719-llvm-8984e6ec8c5d52cfe49129c9f4d4cc395c865f7e.zip | |
Add statistics for tail duplication.
llvm-svn: 89225
Diffstat (limited to 'llvm/lib/CodeGen/BranchFolding.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/BranchFolding.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/BranchFolding.cpp b/llvm/lib/CodeGen/BranchFolding.cpp index 94bfb7204ba..e0a7825a26c 100644 --- a/llvm/lib/CodeGen/BranchFolding.cpp +++ b/llvm/lib/CodeGen/BranchFolding.cpp @@ -41,8 +41,11 @@ using namespace llvm; STATISTIC(NumDeadBlocks, "Number of dead blocks removed"); STATISTIC(NumBranchOpts, "Number of branches optimized"); STATISTIC(NumTailMerge , "Number of block tails merged"); +STATISTIC(NumTailDups , "Number of tail duplicated blocks"); + static cl::opt<cl::boolOrDefault> FlagEnableTailMerge("enable-tail-merge", cl::init(cl::BOU_UNSET), cl::Hidden); + // Throttle for huge numbers of predecessors (compile speed problems) static cl::opt<unsigned> TailMergeThreshold("tail-merge-threshold", @@ -1107,6 +1110,7 @@ bool BranchFolder::TailDuplicate(MachineBasicBlock *TailBB, PredBB->addSuccessor(*I); Changed = true; + ++NumTailDups; } // If TailBB was duplicated into all its predecessors except for the prior |
