- LoadInst *Orig = Builder.CreateLoad(Ptr);
- Value *Res = NULL;
- switch (IID) {
- default: assert(0 && "Unrecognized atomic modify operation");
- case Intrinsic::atomic_load_add:
- Res = Builder.CreateAdd(Orig, Delta);
- break;
- case Intrinsic::atomic_load_sub:
- Res = Builder.CreateSub(Orig, Delta);
- break;
- case Intrinsic::atomic_load_and:
- Res = Builder.CreateAnd(Orig, Delta);
- break;
- case Intrinsic::atomic_load_nand:
- Res = Builder.CreateNot(Builder.CreateAnd(Orig, Delta));
- break;
- case Intrinsic::atomic_load_or:
- Res = Builder.CreateOr(Orig, Delta);
- break;
- case Intrinsic::atomic_load_xor:
- Res = Builder.CreateXor(Orig, Delta);
- break;
- case Intrinsic::atomic_load_max:
- Res = Builder.CreateSelect(Builder.CreateICmpSLT(Orig, Delta),
- Delta, Orig);
- break;
- case Intrinsic::atomic_load_min:
- Res = Builder.CreateSelect(Builder.CreateICmpSLT(Orig, Delta),
- Orig, Delta);
- break;
- case Intrinsic::atomic_load_umax:
- Res = Builder.CreateSelect(Builder.CreateICmpULT(Orig, Delta),
- Delta, Orig);
- break;
- case Intrinsic::atomic_load_umin:
- Res = Builder.CreateSelect(Builder.CreateICmpULT(Orig, Delta),
- Orig, Delta);
- break;
- }
- Builder.CreateStore(Res, Ptr);
+ LoadInst *Orig = Builder.CreateLoad(Ptr);
+ Value *Equal = Builder.CreateICmpEQ(Orig, Cmp);
+ Value *Res = Builder.CreateSelect(Equal, Val, Orig);
+ Builder.CreateStore(Res, Ptr);