LLVM 17.0.0git
ARMMCExpr.h
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1//===-- ARMMCExpr.h - ARM specific MC expression classes --------*- C++ -*-===//
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#ifndef LLVM_LIB_TARGET_ARM_MCTARGETDESC_ARMMCEXPR_H
10#define LLVM_LIB_TARGET_ARM_MCTARGETDESC_ARMMCEXPR_H
11
12#include "llvm/MC/MCExpr.h"
13
14namespace llvm {
15
16class ARMMCExpr : public MCTargetExpr {
17public:
20 VK_ARM_HI16, // The R_ARM_MOVT_ABS relocation (:upper16: in the .s file)
21 VK_ARM_LO16 // The R_ARM_MOVW_ABS_NC relocation (:lower16: in the .s file)
22 };
23
24private:
25 const VariantKind Kind;
26 const MCExpr *Expr;
27
28 explicit ARMMCExpr(VariantKind Kind, const MCExpr *Expr)
29 : Kind(Kind), Expr(Expr) {}
30
31public:
32 /// @name Construction
33 /// @{
34
35 static const ARMMCExpr *create(VariantKind Kind, const MCExpr *Expr,
36 MCContext &Ctx);
37
38 static const ARMMCExpr *createUpper16(const MCExpr *Expr, MCContext &Ctx) {
39 return create(VK_ARM_HI16, Expr, Ctx);
40 }
41
42 static const ARMMCExpr *createLower16(const MCExpr *Expr, MCContext &Ctx) {
43 return create(VK_ARM_LO16, Expr, Ctx);
44 }
45
46 /// @}
47 /// @name Accessors
48 /// @{
49
50 /// getOpcode - Get the kind of this expression.
51 VariantKind getKind() const { return Kind; }
52
53 /// getSubExpr - Get the child of this expression.
54 const MCExpr *getSubExpr() const { return Expr; }
55
56 /// @}
57
58 void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
60 const MCAsmLayout *Layout,
61 const MCFixup *Fixup) const override {
62 return false;
63 }
64 void visitUsedExpr(MCStreamer &Streamer) const override;
67 }
68
69 // There are no TLS ARMMCExprs at the moment.
70 void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
71
72 static bool classof(const MCExpr *E) {
73 return E->getKind() == MCExpr::Target;
74 }
75};
76} // end namespace llvm
77
78#endif
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
PowerPC TLS Dynamic Call Fixup
VariantKind getKind() const
getOpcode - Get the kind of this expression.
Definition: ARMMCExpr.h:51
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override
Definition: ARMMCExpr.cpp:22
bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout, const MCFixup *Fixup) const override
Definition: ARMMCExpr.h:59
static bool classof(const MCExpr *E)
Definition: ARMMCExpr.h:72
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override
Definition: ARMMCExpr.h:70
const MCExpr * getSubExpr() const
getSubExpr - Get the child of this expression.
Definition: ARMMCExpr.h:54
static const ARMMCExpr * createLower16(const MCExpr *Expr, MCContext &Ctx)
Definition: ARMMCExpr.h:42
void visitUsedExpr(MCStreamer &Streamer) const override
Definition: ARMMCExpr.cpp:37
static const ARMMCExpr * createUpper16(const MCExpr *Expr, MCContext &Ctx)
Definition: ARMMCExpr.h:38
MCFragment * findAssociatedFragment() const override
Definition: ARMMCExpr.h:65
static const ARMMCExpr * create(VariantKind Kind, const MCExpr *Expr, MCContext &Ctx)
Definition: ARMMCExpr.cpp:17
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
@ Target
Target specific expression.
Definition: MCExpr.h:42
MCFragment * findAssociatedFragment() const
Find the "associated section" for this expression, which is currently defined as the absolute section...
Definition: MCExpr.cpp:987
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
This is an extension point for target-specific MCExpr subclasses to implement.
Definition: MCExpr.h:645
This represents an "assembler immediate".
Definition: MCValue.h:36
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18