lib/CodeGen/CGAtomic.cpp

456   llvm::BasicBlock *MonotonicBB = nullptr, *AcquireBB = nullptr,
460     AcquireBB = CGF.createBasicBlock("acquire_fail", CGF.CurFn);
478   if (AcquireBB) {
479     CGF.Builder.SetInsertPoint(AcquireBB);
484                 AcquireBB);
486                 AcquireBB);
1085   llvm::BasicBlock *MonotonicBB = nullptr, *AcquireBB = nullptr,
1090     AcquireBB = createBasicBlock("acquire", CurFn);
1111     Builder.SetInsertPoint(AcquireBB);
1116                 AcquireBB);
1118                 AcquireBB);