[ARM GlobalISel] Legalize G_SITOFP and G_UITOFP
Legal if we have hardware support, libcall otherwise.
Also add supporting code to the legalizer helper for libcalls.
llvm-svn: 323730
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 4fcb6a6..773e51c 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -154,6 +154,10 @@
return RTLIB::getFPTOSINT(FromMVT, ToMVT);
case TargetOpcode::G_FPTOUI:
return RTLIB::getFPTOUINT(FromMVT, ToMVT);
+ case TargetOpcode::G_SITOFP:
+ return RTLIB::getSINTTOFP(FromMVT, ToMVT);
+ case TargetOpcode::G_UITOFP:
+ return RTLIB::getUINTTOFP(FromMVT, ToMVT);
}
llvm_unreachable("Unsupported libcall function");
}
@@ -238,6 +242,21 @@
return Status;
break;
}
+ case TargetOpcode::G_SITOFP:
+ case TargetOpcode::G_UITOFP: {
+ // FIXME: Support other types
+ unsigned FromSize = MRI.getType(MI.getOperand(1).getReg()).getSizeInBits();
+ unsigned ToSize = MRI.getType(MI.getOperand(0).getReg()).getSizeInBits();
+ if (FromSize != 32 || (ToSize != 32 && ToSize != 64))
+ return UnableToLegalize;
+ LegalizeResult Status = conversionLibcall(
+ MI, MIRBuilder,
+ ToSize == 64 ? Type::getDoubleTy(Ctx) : Type::getFloatTy(Ctx),
+ Type::getInt32Ty(Ctx));
+ if (Status != Legalized)
+ return Status;
+ break;
+ }
}
MI.eraseFromParent();