/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/lib/Target/X86/MCTargetDesc/X86MCExpr.h
Line | Count | Source (jump to first uncovered line) |
1 | | //=--- X86MCExpr.h - X86 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 | | // This file describes X86-specific MCExprs, i.e, registers used for |
10 | | // extended variable assignments. |
11 | | // |
12 | | //===----------------------------------------------------------------------===// |
13 | | |
14 | | #ifndef LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCEXPR_H |
15 | | #define LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCEXPR_H |
16 | | |
17 | | #include "X86ATTInstPrinter.h" |
18 | | #include "llvm/MC/MCAsmInfo.h" |
19 | | #include "llvm/MC/MCContext.h" |
20 | | #include "llvm/MC/MCExpr.h" |
21 | | #include "llvm/Support/ErrorHandling.h" |
22 | | |
23 | | namespace llvm { |
24 | | |
25 | | class X86MCExpr : public MCTargetExpr { |
26 | | |
27 | | private: |
28 | | const int64_t RegNo; // All |
29 | | |
30 | 299k | explicit X86MCExpr(int64_t R) : RegNo(R) {} |
31 | | |
32 | | public: |
33 | | /// @name Construction |
34 | | /// @{ |
35 | | |
36 | 299k | static const X86MCExpr *create(int64_t RegNo, MCContext &Ctx) { |
37 | 299k | return new (Ctx) X86MCExpr(RegNo); |
38 | 299k | } |
39 | | |
40 | | /// @} |
41 | | /// @name Accessors |
42 | | /// @{ |
43 | | |
44 | | /// getSubExpr - Get the child of this expression. |
45 | 300k | int64_t getRegNo() const { return RegNo; } |
46 | | |
47 | | /// @} |
48 | | |
49 | 0 | void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override { |
50 | 0 | if (!MAI || MAI->getAssemblerDialect() == 0) |
51 | 0 | OS << '%'; |
52 | 0 | OS << X86ATTInstPrinter::getRegisterName(RegNo); |
53 | 0 | } |
54 | | |
55 | | bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout, |
56 | 300k | const MCFixup *Fixup) const override { |
57 | 300k | return false; |
58 | 300k | } |
59 | | // Register values should be inlined as they are not valid .set expressions. |
60 | 256 | bool inlineAssignedExpr() const override { return true; } |
61 | 2 | bool isEqualTo(const MCExpr *X) const override { |
62 | 2 | if (auto *E = dyn_cast<X86MCExpr>(X)) |
63 | 2 | return getRegNo() == E->getRegNo(); |
64 | 0 | return false; |
65 | 0 | } |
66 | 13 | void visitUsedExpr(MCStreamer &Streamer) const override{}; |
67 | 0 | MCFragment *findAssociatedFragment() const override { return nullptr; } |
68 | | |
69 | | // There are no TLS X86MCExprs at the moment. |
70 | 0 | void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {} |
71 | | |
72 | 373k | static bool classof(const MCExpr *E) { |
73 | 373k | return E->getKind() == MCExpr::Target; |
74 | 373k | } |
75 | | }; |
76 | | |
77 | | } // end namespace llvm |
78 | | |
79 | | #endif |