[llvm] [InstrProf] Support conditional counter updates (PR #102542)
NAKAMURA Takumi via llvm-commits
llvm-commits at lists.llvm.org
Wed Oct 2 21:49:58 PDT 2024
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@@ -1213,6 +1218,17 @@ Value *InstrLowerer::getBitmapAddress(InstrProfMCDCTVBitmapUpdate *I) {
void InstrLowerer::lowerCover(InstrProfCoverInst *CoverInstruction) {
auto *Addr = getCounterAddress(CoverInstruction);
IRBuilder<> Builder(CoverInstruction);
+ if (ConditionalCounterUpdate) {
+ Instruction *SplitBefore = CoverInstruction->getNextNode();
+ auto &Ctx = CoverInstruction->getParent()->getContext();
+ auto *Int8Ty = llvm::Type::getInt8Ty(Ctx);
+ Value *Load = Builder.CreateLoad(Int8Ty, Addr, "pgocount");
+ Value *Cmp = Builder.CreateIsNotNull(Load, "pgocount.ifnonzero");
+ Instruction *ThenBranch =
+ SplitBlockAndInsertIfThen(Cmp, SplitBefore, false);
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chapuni wrote:
I'll follow bitmap part in #110792.
https://github.com/llvm/llvm-project/pull/102542
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