1 //===-- SystemZMCExpr.cpp - SystemZ specific MC expression classes --------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "SystemZMCExpr.h"
10 #include "llvm/MC/MCContext.h"
11 using namespace llvm;
12
13 #define DEBUG_TYPE "systemzmcexpr"
14
create(VariantKind Kind,const MCExpr * Expr,MCContext & Ctx)15 const SystemZMCExpr *SystemZMCExpr::create(VariantKind Kind, const MCExpr *Expr,
16 MCContext &Ctx) {
17 return new (Ctx) SystemZMCExpr(Kind, Expr);
18 }
19
getVariantKindName() const20 StringRef SystemZMCExpr::getVariantKindName() const {
21 switch (static_cast<uint32_t>(getKind())) {
22 case VK_SystemZ_None:
23 return "A";
24 case VK_SystemZ_RCon:
25 return "R";
26 case VK_SystemZ_VCon:
27 return "V";
28 default:
29 llvm_unreachable("Invalid kind");
30 }
31 }
32
printImpl(raw_ostream & OS,const MCAsmInfo * MAI) const33 void SystemZMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
34 OS << getVariantKindName() << '(';
35 Expr->print(OS, MAI);
36 OS << ')';
37 }
38
evaluateAsRelocatableImpl(MCValue & Res,const MCAssembler * Asm,const MCFixup * Fixup) const39 bool SystemZMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
40 const MCAssembler *Asm,
41 const MCFixup *Fixup) const {
42 if (!getSubExpr()->evaluateAsRelocatable(Res, Asm, Fixup))
43 return false;
44
45 Res =
46 MCValue::get(Res.getSymA(), Res.getSymB(), Res.getConstant(), getKind());
47
48 return true;
49 }
50