diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstructionCombining.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp index 4b542d77d18..b07e2cc2d2a 100644 --- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp +++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp @@ -60,6 +60,7 @@ #include "llvm/IR/ValueHandle.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" +#include "llvm/Support/DebugCounter.h" #include "llvm/Support/KnownBits.h" #include "llvm/Support/raw_ostream.h" #include "llvm/Transforms/InstCombine/InstCombine.h" @@ -79,6 +80,8 @@ STATISTIC(NumSunkInst , "Number of instructions sunk"); STATISTIC(NumExpand, "Number of expansions"); STATISTIC(NumFactor , "Number of factorizations"); STATISTIC(NumReassoc , "Number of reassociations"); +DEBUG_COUNTER(VisitCounter, "instcombine-visit", + "Controls which instructions are visited"); static cl::opt<bool> EnableExpensiveCombines("expensive-combines", @@ -2882,6 +2885,9 @@ bool InstCombiner::run() { continue; } + if (!DebugCounter::shouldExecute(VisitCounter)) + continue; + // Instruction isn't dead, see if we can constant propagate it. if (!I->use_empty() && (I->getNumOperands() == 0 || isa<Constant>(I->getOperand(0)))) { |
