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transform fabs/fabsf calls into FABS nodes.

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llvm-svn: 21014
This commit is contained in:
Chris Lattner 2005-04-02 05:26:53 +00:00
parent 206a694a7b
commit 1a15f58a92
1 changed files with 39 additions and 29 deletions
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68
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -652,35 +652,45 @@ void SelectionDAGLowering::visitStore(StoreInst &I) {
void SelectionDAGLowering::visitCall(CallInst &I) {
const char *RenameFn = 0;
if (Function *F = I.getCalledFunction())
switch (F->getIntrinsicID()) {
case 0: break; // Not an intrinsic.
case Intrinsic::vastart: visitVAStart(I); return;
case Intrinsic::vaend: visitVAEnd(I); return;
case Intrinsic::vacopy: visitVACopy(I); return;
case Intrinsic::returnaddress: visitFrameReturnAddress(I, false); return;
case Intrinsic::frameaddress: visitFrameReturnAddress(I, true); return;
default:
// FIXME: IMPLEMENT THESE.
// readport, writeport, readio, writeio
assert(0 && "This intrinsic is not implemented yet!");
return;
case Intrinsic::setjmp: RenameFn = "setjmp"; break;
case Intrinsic::longjmp: RenameFn = "longjmp"; break;
case Intrinsic::memcpy: visitMemIntrinsic(I, ISD::MEMCPY); return;
case Intrinsic::memset: visitMemIntrinsic(I, ISD::MEMSET); return;
case Intrinsic::memmove: visitMemIntrinsic(I, ISD::MEMMOVE); return;
case Intrinsic::isunordered:
setValue(&I, DAG.getSetCC(ISD::SETUO, MVT::i1, getValue(I.getOperand(1)),
getValue(I.getOperand(2))));
return;
case Intrinsic::pcmarker: {
SDOperand Num = getValue(I.getOperand(1));
DAG.setRoot(DAG.getNode(ISD::PCMARKER, MVT::Other, getRoot(), Num));
return;
}
}
if (F->isExternal())
switch (F->getIntrinsicID()) {
case 0: // Not an LLVM intrinsic.
if (F->getName() == "fabs" || F->getName() == "fabsf") {
if (I.getNumOperands() == 2 && // Basic sanity checks.
I.getOperand(1)->getType()->isFloatingPoint() &&
I.getType() == I.getOperand(1)->getType()) {
SDOperand Tmp = getValue(I.getOperand(1));
setValue(&I, DAG.getNode(ISD::FABS, Tmp.getValueType(), Tmp));
return;
}
}
break;
case Intrinsic::vastart: visitVAStart(I); return;
case Intrinsic::vaend: visitVAEnd(I); return;
case Intrinsic::vacopy: visitVACopy(I); return;
case Intrinsic::returnaddress: visitFrameReturnAddress(I, false); return;
case Intrinsic::frameaddress: visitFrameReturnAddress(I, true); return;
default:
// FIXME: IMPLEMENT THESE.
// readport, writeport, readio, writeio
assert(0 && "This intrinsic is not implemented yet!");
return;
case Intrinsic::setjmp: RenameFn = "setjmp"; break;
case Intrinsic::longjmp: RenameFn = "longjmp"; break;
case Intrinsic::memcpy: visitMemIntrinsic(I, ISD::MEMCPY); return;
case Intrinsic::memset: visitMemIntrinsic(I, ISD::MEMSET); return;
case Intrinsic::memmove: visitMemIntrinsic(I, ISD::MEMMOVE); return;
case Intrinsic::isunordered:
setValue(&I, DAG.getSetCC(ISD::SETUO, MVT::i1,getValue(I.getOperand(1)),
getValue(I.getOperand(2))));
return;
case Intrinsic::pcmarker: {
SDOperand Num = getValue(I.getOperand(1));
DAG.setRoot(DAG.getNode(ISD::PCMARKER, MVT::Other, getRoot(), Num));
return;
}
}
SDOperand Callee;
if (!RenameFn)