LLVM 19.0.0git
LanaiMCExpr.cpp
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1//===-- LanaiMCExpr.cpp - Lanai 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 "LanaiMCExpr.h"
10#include "llvm/MC/MCAssembler.h"
11#include "llvm/MC/MCContext.h"
12#include "llvm/MC/MCStreamer.h"
13using namespace llvm;
14
15#define DEBUG_TYPE "lanaimcexpr"
16
18 MCContext &Ctx) {
19 return new (Ctx) LanaiMCExpr(Kind, Expr);
20}
21
23 if (Kind == VK_Lanai_None) {
24 Expr->print(OS, MAI);
25 return;
26 }
27
28 switch (Kind) {
29 default:
30 llvm_unreachable("Invalid kind!");
31 case VK_Lanai_ABS_HI:
32 OS << "hi";
33 break;
34 case VK_Lanai_ABS_LO:
35 OS << "lo";
36 break;
37 }
38
39 OS << '(';
40 const MCExpr *Expr = getSubExpr();
41 Expr->print(OS, MAI);
42 OS << ')';
43}
44
46 Streamer.visitUsedExpr(*getSubExpr());
47}
48
50 const MCAsmLayout *Layout,
51 const MCFixup *Fixup) const {
52 if (!getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup))
53 return false;
54
55 Res =
56 MCValue::get(Res.getSymA(), Res.getSymB(), Res.getConstant(), getKind());
57
58 return true;
59}
PowerPC TLS Dynamic Call Fixup
raw_pwrite_stream & OS
VariantKind getKind() const
Definition: LanaiMCExpr.h:33
static const LanaiMCExpr * create(VariantKind Kind, const MCExpr *Expr, MCContext &Ctx)
Definition: LanaiMCExpr.cpp:17
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override
Definition: LanaiMCExpr.cpp:22
bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout, const MCFixup *Fixup) const override
Definition: LanaiMCExpr.cpp:49
const MCExpr * getSubExpr() const
Definition: LanaiMCExpr.h:36
void visitUsedExpr(MCStreamer &Streamer) const override
Definition: LanaiMCExpr.cpp:45
This class is intended to be used as a base class for asm properties and features specific to the tar...
Definition: MCAsmInfo.h:56
Encapsulates the layout of an assembly file at a particular point in time.
Definition: MCAsmLayout.h:28
Context object for machine code objects.
Definition: MCContext.h:76
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
bool evaluateAsRelocatable(MCValue &Res, const MCAsmLayout *Layout, const MCFixup *Fixup) const
Try to evaluate the expression to a relocatable value, i.e.
Definition: MCExpr.cpp:810
void print(raw_ostream &OS, const MCAsmInfo *MAI, bool InParens=false) const
Definition: MCExpr.cpp:41
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:71
Streaming machine code generation interface.
Definition: MCStreamer.h:212
void visitUsedExpr(const MCExpr &Expr)
This represents an "assembler immediate".
Definition: MCValue.h:36
int64_t getConstant() const
Definition: MCValue.h:43
static MCValue get(const MCSymbolRefExpr *SymA, const MCSymbolRefExpr *SymB=nullptr, int64_t Val=0, uint32_t RefKind=0)
Definition: MCValue.h:59
const MCSymbolRefExpr * getSymB() const
Definition: MCValue.h:45
const MCSymbolRefExpr * getSymA() const
Definition: MCValue.h:44
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18