+X86Operand *X86AsmParser::CreateMemForInlineAsm(const MCExpr *Disp, SMLoc Start,
+ SMLoc End, SMLoc SizeDirLoc,
+ unsigned Size) {
+ bool NeedSizeDir = false;
+ bool IsVarDecl = false;
+ if (const MCSymbolRefExpr *SymRef = dyn_cast<MCSymbolRefExpr>(Disp)) {
+ const MCSymbol &Sym = SymRef->getSymbol();
+ // FIXME: The SemaLookup will fail if the name is anything other then an
+ // identifier.
+ // FIXME: Pass a valid SMLoc.
+ unsigned tLength, tSize, tType;
+ SemaCallback->LookupInlineAsmIdentifier(Sym.getName(), NULL, tLength,
+ tSize, tType, IsVarDecl);
+ if (!Size) {
+ Size = tType * 8; // Size is in terms of bits in this context.
+ NeedSizeDir = Size > 0;
+ }
+ }
+
+ // If this is not a VarDecl then assume it is a FuncDecl or some other label
+ // reference. We need an 'r' constraint here, so we need to create register
+ // operand to ensure proper matching. Just pick a GPR based on the size of
+ // a pointer.
+ if (!IsVarDecl) {
+ unsigned RegNo = is64BitMode() ? X86::RBX : X86::EBX;
+ return X86Operand::CreateReg(RegNo, Start, End, /*AddressOf=*/true);
+ }
+
+ if (NeedSizeDir)
+ InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_SizeDirective, SizeDirLoc,
+ /*Len*/0, Size));
+
+ // When parsing inline assembly we set the base register to a non-zero value
+ // as we don't know the actual value at this time. This is necessary to
+ // get the matching correct in some cases.
+ return X86Operand::CreateMem(/*SegReg*/0, Disp, /*BaseReg*/1, /*IndexReg*/0,
+ /*Scale*/1, Start, End, Size);
+}
+