From 8984e6ec8c5d52cfe49129c9f4d4cc395c865f7e Mon Sep 17 00:00:00 2001 From: Bob Wilson Date: Wed, 18 Nov 2009 19:29:37 +0000 Subject: Add statistics for tail duplication. llvm-svn: 89225 --- llvm/lib/CodeGen/BranchFolding.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'llvm/lib/CodeGen/BranchFolding.cpp') 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 FlagEnableTailMerge("enable-tail-merge", cl::init(cl::BOU_UNSET), cl::Hidden); + // Throttle for huge numbers of predecessors (compile speed problems) static cl::opt 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 -- cgit v1.2.3