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more cleanups

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llvm-svn: 113115
This commit is contained in:
Chris Lattner 2010-09-05 20:13:07 +00:00
parent 41d0913a1d
commit e54b9e2332
1 changed files with 38 additions and 52 deletions
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90
lib/Transforms/Scalar/LowerAtomic.cpp
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@ -14,12 +14,8 @@
#define DEBUG_TYPE "loweratomic"
#include "llvm/Transforms/Scalar.h"
#include "llvm/BasicBlock.h"
#include "llvm/Function.h"
#include "llvm/Instruction.h"
#include "llvm/Instructions.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/Intrinsics.h"
#include "llvm/Pass.h"
#include "llvm/Support/IRBuilder.h"
using namespace llvm;
@ -41,51 +37,46 @@ static bool LowerAtomicIntrinsic(IntrinsicInst *II) {
case Intrinsic::atomic_load_min:
case Intrinsic::atomic_load_umax:
case Intrinsic::atomic_load_umin: {
Value *Ptr = II->getArgOperand(0);
Value *Delta = II->getArgOperand(1);
Value *Ptr = II->getArgOperand(0), *Delta = II->getArgOperand(1);
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;
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);
@ -94,26 +85,21 @@ static bool LowerAtomicIntrinsic(IntrinsicInst *II) {
}
case Intrinsic::atomic_swap: {
Value *Ptr = II->getArgOperand(0);
Value *Val = II->getArgOperand(1);
Value *Ptr = II->getArgOperand(0), *Val = II->getArgOperand(1);
LoadInst *Orig = Builder.CreateLoad(Ptr);
Builder.CreateStore(Val, Ptr);
II->replaceAllUsesWith(Orig);
break;
}
case Intrinsic::atomic_cmp_swap: {
Value *Ptr = II->getArgOperand(0);
Value *Cmp = II->getArgOperand(1);
Value *Ptr = II->getArgOperand(0), *Cmp = II->getArgOperand(1);
Value *Val = II->getArgOperand(2);
LoadInst *Orig = Builder.CreateLoad(Ptr);
Value *Equal = Builder.CreateICmpEQ(Orig, Cmp);
Value *Res = Builder.CreateSelect(Equal, Val, Orig);
Builder.CreateStore(Res, Ptr);
II->replaceAllUsesWith(Orig);
break;
}