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support IDEF, fnegabs (thanks sampo)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21023 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -609,6 +609,11 @@ unsigned ISel::SelectExpr(SDOperand N) {
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return Result;
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}
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case ISD::UNDEF: {
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BuildMI(BB, IA64::IDEF, 0, Result);
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return Result;
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}
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case ISD::GlobalAddress: {
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GlobalValue *GV = cast<GlobalAddressSDNode>(N)->getGlobal();
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@ -799,9 +804,16 @@ assert(0 && "hmm, ISD::SIGN_EXTEND: shouldn't ever be reached. bad luck!\n");
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}
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case ISD::FNEG: {
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Tmp1 = SelectExpr(N.getOperand(0));
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assert(DestType == MVT::f64 && "trying to fneg something other than f64?");
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BuildMI(BB, IA64::FNEG, 1, Result).addReg(Tmp1);
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if (ISD::FABS == N.getOperand(0).getOpcode()) { // && hasOneUse()?
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Tmp1 = SelectExpr(N.getOperand(0).getOperand(0));
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BuildMI(BB, IA64::FNEGABS, 1, Result).addReg(Tmp1); // fold in abs
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} else {
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Tmp1 = SelectExpr(N.getOperand(0));
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BuildMI(BB, IA64::FNEG, 1, Result).addReg(Tmp1); // plain old fneg
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}
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return Result;
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}
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