void RewritePNaClLibraryCalls::rewriteSetjmpCall(CallInst *Call) {
// Find the intrinsic function.
Function *NaClSetjmpFunc = findSetjmpIntrinsic();
// Cast the jmp_buf argument to the type NaClSetjmpCall expects.
Type *PtrTy = NaClSetjmpFunc->getFunctionType()->getParamType(0);
BitCastInst *JmpBufCast = new BitCastInst(Call->getArgOperand(0), PtrTy,
"jmp_buf_i8", Call);
const DebugLoc &DLoc = Call->getDebugLoc();
JmpBufCast->setDebugLoc(DLoc);
// Emit the updated call.
Value *Args[] = { JmpBufCast };
CallInst *NaClSetjmpCall = CallInst::Create(NaClSetjmpFunc, Args, "", Call);
NaClSetjmpCall->setDebugLoc(DLoc);
NaClSetjmpCall->takeName(Call);
// Replace the original call.
Call->replaceAllUsesWith(NaClSetjmpCall);
Call->eraseFromParent();
}
void RewritePNaClLibraryCalls::rewriteLongjmpCall(CallInst *Call) {
// Find the intrinsic function.
Function *NaClLongjmpFunc = findLongjmpIntrinsic();
// Cast the jmp_buf argument to the type NaClLongjmpCall expects.
Type *PtrTy = NaClLongjmpFunc->getFunctionType()->getParamType(0);
BitCastInst *JmpBufCast = new BitCastInst(Call->getArgOperand(0), PtrTy,
"jmp_buf_i8", Call);
const DebugLoc &DLoc = Call->getDebugLoc();
JmpBufCast->setDebugLoc(DLoc);
// Emit the call.
Value *Args[] = { JmpBufCast, Call->getArgOperand(1) };
CallInst *NaClLongjmpCall = CallInst::Create(NaClLongjmpFunc, Args, "", Call);
NaClLongjmpCall->setDebugLoc(DLoc);
// No takeName here since longjmp is a void call that does not get assigned to
// a value.
// Remove the original call. There's no need for RAUW because longjmp
// returns void.
Call->eraseFromParent();
}
