1//===-- LanaiMCExpr.cpp - Lanai specific MC expression classes ------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "LanaiMCExpr.h"
11#include "llvm/MC/MCAssembler.h"
12#include "llvm/MC/MCContext.h"
13#include "llvm/MC/MCStreamer.h"
14using namespace llvm;
15
16#define DEBUG_TYPE "lanaimcexpr"
17
18const LanaiMCExpr *LanaiMCExpr::create(VariantKind Kind, const MCExpr *Expr,
19                                       MCContext &Ctx) {
20  return new (Ctx) LanaiMCExpr(Kind, Expr);
21}
22
23void LanaiMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
24  if (Kind == VK_Lanai_None) {
25    Expr->print(OS, MAI);
26    return;
27  }
28
29  switch (Kind) {
30  default:
31    llvm_unreachable("Invalid kind!");
32  case VK_Lanai_ABS_HI:
33    OS << "hi";
34    break;
35  case VK_Lanai_ABS_LO:
36    OS << "lo";
37    break;
38  }
39
40  OS << '(';
41  const MCExpr *Expr = getSubExpr();
42  Expr->print(OS, MAI);
43  OS << ')';
44}
45
46void LanaiMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
47  Streamer.visitUsedExpr(*getSubExpr());
48}
49
50bool LanaiMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
51                                            const MCAsmLayout *Layout,
52                                            const MCFixup *Fixup) const {
53  if (!getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup))
54    return false;
55
56  Res =
57      MCValue::get(Res.getSymA(), Res.getSymB(), Res.getConstant(), getKind());
58
59  return true;
60}
61