================
@@ -1201,19 +1197,22 @@ void CodeGenPGO::emitMCDCCondBitmapUpdate(CGBuilderTy
&Builder, const Expr *S,
// Extract the ID of the condition we are setting in the bitmap.
const auto &Branch = BranchStateIter->second;
assert(Branch.ID >= 0 && "Condition has no ID!");
+ assert(Branch.DecisionStmt);
- auto *I8PtrTy = llvm::PointerType::getUnqual(CGM.getLLVMContext());
+ // Cancel the emission if the Decision is erased after the allocation.
+ const auto DecisionIter =
+ RegionMCDCState->DecisionByStmt.find(Branch.DecisionStmt);
+ if (DecisionIter == RegionMCDCState->DecisionByStmt.end())
+ return;
- // Emit intrinsic that updates a dedicated temporary value on the stack after
- // a condition is evaluated. After the set of conditions has been updated,
- // the resulting value is used to update the boolean expression's bitmap.
- llvm::Value *Args[5] = {llvm::ConstantExpr::getBitCast(FuncNameVar, I8PtrTy),
- Builder.getInt64(FunctionHash),
- Builder.getInt32(Branch.ID),
- MCDCCondBitmapAddr.getPointer(), Val};
- Builder.CreateCall(
- CGM.getIntrinsic(llvm::Intrinsic::instrprof_mcdc_condbitmap_update),
- Args);
+ const auto &TVIdxs = DecisionIter->second.Indices[Branch.ID];
+
+ auto *CurTV = Builder.CreateLoad(MCDCCondBitmapAddr,
+ "mcdc." + Twine(Branch.ID + 1) + ".cur");
+ auto *NewTV = Builder.CreateAdd(CurTV, Builder.getInt32(TVIdxs[true]));
+ NewTV = Builder.CreateSelect(
+ Val, NewTV, Builder.CreateAdd(CurTV, Builder.getInt32(TVIdxs[false])));
+ Builder.CreateStore(NewTV, MCDCCondBitmapAddr);
----------------
chapuni wrote:
I don't use the intrinsic.
https://github.com/llvm/llvm-project/pull/82448
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