Commit fc4020db authored by Craig Topper's avatar Craig Topper
Browse files

[X86] Mark fp128 FMA as LibCall instead of Expand. Add STRICT_FMA as well. 

The Expand code would fall back to LibCall, but this makes it
more explicit.
parent 6bbca341

llvm/lib/Target/X86/X86ISelLowering.cpp

+2 −1
Original line number Diff line number Diff line
@@ -674,7 +674,8 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM, 
    setOperationAction(ISD::STRICT_FDIV, MVT::f128, LibCall);

    setOperationAction(ISD::FMUL,        MVT::f128, LibCall);

    setOperationAction(ISD::STRICT_FMUL, MVT::f128, LibCall);

    setOperationAction(ISD::FMA,         MVT::f128, Expand);

    setOperationAction(ISD::FMA,         MVT::f128, LibCall);

    setOperationAction(ISD::STRICT_FMA,  MVT::f128, LibCall);















    setOperationAction(ISD::FABS, MVT::f128, Custom);















    setOperationAction(ISD::FNEG, MVT::f128, Custom);

























llvm/test/CodeGen/X86/fp128-libcalls-strict.ll



+13
−0






























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@@ -54,9 +54,22 @@ entry:













  ret fp128 %div















}





























define fp128 @fma(fp128 %x, fp128 %y, fp128 %z) nounwind strictfp {













; CHECK-LABEL: fma:













; CHECK:       # %bb.0: # %entry













; CHECK-NEXT:    pushq %rax













; CHECK-NEXT:    callq fmal













; CHECK-NEXT:    popq %rax













; CHECK-NEXT:    retq













entry:













  %fma = call fp128 @llvm.experimental.constrained.fma.f128(fp128 %x, fp128 %y,  fp128 %z, metadata !"round.dynamic", metadata !"fpexcept.strict") #0













  ret fp128 %fma













}





























attributes #0 = { strictfp }































declare fp128 @llvm.experimental.constrained.fadd.f128(fp128, fp128, metadata, metadata)















declare fp128 @llvm.experimental.constrained.fsub.f128(fp128, fp128, metadata, metadata)















declare fp128 @llvm.experimental.constrained.fmul.f128(fp128, fp128, metadata, metadata)















declare fp128 @llvm.experimental.constrained.fdiv.f128(fp128, fp128, metadata, metadata)













declare fp128 @llvm.experimental.constrained.fma.f128(fp128, fp128, fp128, metadata, metadata)