return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, OutChains);
}
+static void checkAddrSpaceIsValidForLibcall(const TargetLowering *TLI,
+ unsigned AS) {
+ // Lowering memcpy / memset / memmove intrinsics to calls is only valid if all
+ // pointer operands can be losslessly bitcasted to pointers of address space 0
+ if (AS != 0 && !TLI->isNoopAddrSpaceCast(AS, 0)) {
+ report_fatal_error("cannot lower memory intrinsic in address space " +
+ Twine(AS));
+ }
+}
+
SDValue SelectionDAG::getMemcpy(SDValue Chain, SDLoc dl, SDValue Dst,
SDValue Src, SDValue Size,
unsigned Align, bool isVol, bool AlwaysInline,
true, DstPtrInfo, SrcPtrInfo);
}
+ checkAddrSpaceIsValidForLibcall(TLI, DstPtrInfo.getAddrSpace());
+ checkAddrSpaceIsValidForLibcall(TLI, SrcPtrInfo.getAddrSpace());
+
// FIXME: If the memcpy is volatile (isVol), lowering it to a plain libc
// memcpy is not guaranteed to be safe. libc memcpys aren't required to
// respect volatile, so they may do things like read or write memory
return Result;
}
+ checkAddrSpaceIsValidForLibcall(TLI, DstPtrInfo.getAddrSpace());
+ checkAddrSpaceIsValidForLibcall(TLI, SrcPtrInfo.getAddrSpace());
+
// FIXME: If the memmove is volatile, lowering it to plain libc memmove may
// not be safe. See memcpy above for more details.
return Result;
}
+ checkAddrSpaceIsValidForLibcall(TLI, DstPtrInfo.getAddrSpace());
+
// Emit a library call.
Type *IntPtrTy = getDataLayout().getIntPtrType(*getContext());
TargetLowering::ArgListTy Args;