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[X86] Break out logic to map FMA Intrinsic number to Opcode 

No functional change.  Will be used to lower AVX512 masking FMA intrinsics.

llvm-svn: 215663
This commit is contained in:
Adam Nemet 2014-08-14 17:13:27 +00:00
parent 50b83f0bb8
commit 9b4f08c729
1 changed files with 51 additions and 57 deletions
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108
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -14239,6 +14239,54 @@ static SDValue getVectorMaskingNode(SDValue Op, SDValue Mask,
Op, PreservedSrc);
}
static unsigned getOpcodeForFMAIntrinsic(unsigned IntNo) {
switch (IntNo) {
default: llvm_unreachable("Impossible intrinsic"); // Can't reach here.
case Intrinsic::x86_fma_vfmadd_ps:
case Intrinsic::x86_fma_vfmadd_pd:
case Intrinsic::x86_fma_vfmadd_ps_256:
case Intrinsic::x86_fma_vfmadd_pd_256:
case Intrinsic::x86_fma_vfmadd_ps_512:
case Intrinsic::x86_fma_vfmadd_pd_512:
return X86ISD::FMADD;
case Intrinsic::x86_fma_vfmsub_ps:
case Intrinsic::x86_fma_vfmsub_pd:
case Intrinsic::x86_fma_vfmsub_ps_256:
case Intrinsic::x86_fma_vfmsub_pd_256:
case Intrinsic::x86_fma_vfmsub_ps_512:
case Intrinsic::x86_fma_vfmsub_pd_512:
return X86ISD::FMSUB;
case Intrinsic::x86_fma_vfnmadd_ps:
case Intrinsic::x86_fma_vfnmadd_pd:
case Intrinsic::x86_fma_vfnmadd_ps_256:
case Intrinsic::x86_fma_vfnmadd_pd_256:
case Intrinsic::x86_fma_vfnmadd_ps_512:
case Intrinsic::x86_fma_vfnmadd_pd_512:
return X86ISD::FNMADD;
case Intrinsic::x86_fma_vfnmsub_ps:
case Intrinsic::x86_fma_vfnmsub_pd:
case Intrinsic::x86_fma_vfnmsub_ps_256:
case Intrinsic::x86_fma_vfnmsub_pd_256:
case Intrinsic::x86_fma_vfnmsub_ps_512:
case Intrinsic::x86_fma_vfnmsub_pd_512:
return X86ISD::FNMSUB;
case Intrinsic::x86_fma_vfmaddsub_ps:
case Intrinsic::x86_fma_vfmaddsub_pd:
case Intrinsic::x86_fma_vfmaddsub_ps_256:
case Intrinsic::x86_fma_vfmaddsub_pd_256:
case Intrinsic::x86_fma_vfmaddsub_ps_512:
case Intrinsic::x86_fma_vfmaddsub_pd_512:
return X86ISD::FMADDSUB;
case Intrinsic::x86_fma_vfmsubadd_ps:
case Intrinsic::x86_fma_vfmsubadd_pd:
case Intrinsic::x86_fma_vfmsubadd_ps_256:
case Intrinsic::x86_fma_vfmsubadd_pd_256:
case Intrinsic::x86_fma_vfmsubadd_ps_512:
case Intrinsic::x86_fma_vfmsubadd_pd_512:
return X86ISD::FMSUBADD;
}
}
static SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) {
SDLoc dl(Op);
unsigned IntNo = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
@ -14906,63 +14954,9 @@ static SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) {
case Intrinsic::x86_fma_vfmaddsub_ps_512:
case Intrinsic::x86_fma_vfmaddsub_pd_512:
case Intrinsic::x86_fma_vfmsubadd_ps_512:
case Intrinsic::x86_fma_vfmsubadd_pd_512: {
unsigned Opc;
switch (IntNo) {
default: llvm_unreachable("Impossible intrinsic"); // Can't reach here.
case Intrinsic::x86_fma_vfmadd_ps:
case Intrinsic::x86_fma_vfmadd_pd:
case Intrinsic::x86_fma_vfmadd_ps_256:
case Intrinsic::x86_fma_vfmadd_pd_256:
case Intrinsic::x86_fma_vfmadd_ps_512:
case Intrinsic::x86_fma_vfmadd_pd_512:
Opc = X86ISD::FMADD;
break;
case Intrinsic::x86_fma_vfmsub_ps:
case Intrinsic::x86_fma_vfmsub_pd:
case Intrinsic::x86_fma_vfmsub_ps_256:
case Intrinsic::x86_fma_vfmsub_pd_256:
case Intrinsic::x86_fma_vfmsub_ps_512:
case Intrinsic::x86_fma_vfmsub_pd_512:
Opc = X86ISD::FMSUB;
break;
case Intrinsic::x86_fma_vfnmadd_ps:
case Intrinsic::x86_fma_vfnmadd_pd:
case Intrinsic::x86_fma_vfnmadd_ps_256:
case Intrinsic::x86_fma_vfnmadd_pd_256:
case Intrinsic::x86_fma_vfnmadd_ps_512:
case Intrinsic::x86_fma_vfnmadd_pd_512:
Opc = X86ISD::FNMADD;
break;
case Intrinsic::x86_fma_vfnmsub_ps:
case Intrinsic::x86_fma_vfnmsub_pd:
case Intrinsic::x86_fma_vfnmsub_ps_256:
case Intrinsic::x86_fma_vfnmsub_pd_256:
case Intrinsic::x86_fma_vfnmsub_ps_512:
case Intrinsic::x86_fma_vfnmsub_pd_512:
Opc = X86ISD::FNMSUB;
break;
case Intrinsic::x86_fma_vfmaddsub_ps:
case Intrinsic::x86_fma_vfmaddsub_pd:
case Intrinsic::x86_fma_vfmaddsub_ps_256:
case Intrinsic::x86_fma_vfmaddsub_pd_256:
case Intrinsic::x86_fma_vfmaddsub_ps_512:
case Intrinsic::x86_fma_vfmaddsub_pd_512:
Opc = X86ISD::FMADDSUB;
break;
case Intrinsic::x86_fma_vfmsubadd_ps:
case Intrinsic::x86_fma_vfmsubadd_pd:
case Intrinsic::x86_fma_vfmsubadd_ps_256:
case Intrinsic::x86_fma_vfmsubadd_pd_256:
case Intrinsic::x86_fma_vfmsubadd_ps_512:
case Intrinsic::x86_fma_vfmsubadd_pd_512:
Opc = X86ISD::FMSUBADD;
break;
}
return DAG.getNode(Opc, dl, Op.getValueType(), Op.getOperand(1),
Op.getOperand(2), Op.getOperand(3));
}
case Intrinsic::x86_fma_vfmsubadd_pd_512:
return DAG.getNode(getOpcodeForFMAIntrinsic(IntNo), dl, Op.getValueType(),
Op.getOperand(1), Op.getOperand(2), Op.getOperand(3));
}
}