[InstCombine] Signed saturation patterns
[llvm-complete.git] / lib / MC / MCXCOFFStreamer.cpp
blob50937d6adc0c8f47b6791f0ecbc625a5c1457843
1 //===- lib/MC/MCXCOFFStreamer.cpp - XCOFF Object Output -------------------===//
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 assembles .s files and emits XCOFF .o object files.
11 //===----------------------------------------------------------------------===//
13 #include "llvm/BinaryFormat/XCOFF.h"
14 #include "llvm/MC/MCAsmBackend.h"
15 #include "llvm/MC/MCCodeEmitter.h"
16 #include "llvm/MC/MCObjectWriter.h"
17 #include "llvm/MC/MCSymbolXCOFF.h"
18 #include "llvm/MC/MCXCOFFStreamer.h"
19 #include "llvm/Support/TargetRegistry.h"
21 using namespace llvm;
23 MCXCOFFStreamer::MCXCOFFStreamer(MCContext &Context,
24 std::unique_ptr<MCAsmBackend> MAB,
25 std::unique_ptr<MCObjectWriter> OW,
26 std::unique_ptr<MCCodeEmitter> Emitter)
27 : MCObjectStreamer(Context, std::move(MAB), std::move(OW),
28 std::move(Emitter)) {}
30 bool MCXCOFFStreamer::EmitSymbolAttribute(MCSymbol *Sym,
31 MCSymbolAttr Attribute) {
32 auto *Symbol = cast<MCSymbolXCOFF>(Sym);
33 getAssembler().registerSymbol(*Symbol);
35 switch (Attribute) {
36 case MCSA_Global:
37 Symbol->setStorageClass(XCOFF::C_EXT);
38 Symbol->setExternal(true);
39 break;
40 default:
41 report_fatal_error("Not implemented yet.");
43 return true;
46 void MCXCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
47 unsigned ByteAlignment) {
48 getAssembler().registerSymbol(*Symbol);
49 Symbol->setExternal(cast<MCSymbolXCOFF>(Symbol)->getStorageClass() !=
50 XCOFF::C_HIDEXT);
51 Symbol->setCommon(Size, ByteAlignment);
53 // Need to add this symbol to the current Fragment which will belong to the
54 // containing CSECT.
55 auto *F = dyn_cast_or_null<MCDataFragment>(getCurrentFragment());
56 assert(F && "Expected a valid section with a fragment set.");
57 Symbol->setFragment(F);
59 // Emit the alignment and storage for the variable to the section.
60 EmitValueToAlignment(ByteAlignment);
61 EmitZeros(Size);
64 void MCXCOFFStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
65 uint64_t Size, unsigned ByteAlignment,
66 SMLoc Loc) {
67 report_fatal_error("Zero fill not implemented for XCOFF.");
70 void MCXCOFFStreamer::EmitInstToData(const MCInst &Inst,
71 const MCSubtargetInfo &STI) {
72 MCAssembler &Assembler = getAssembler();
73 SmallVector<MCFixup, 4> Fixups;
74 SmallString<256> Code;
75 raw_svector_ostream VecOS(Code);
76 Assembler.getEmitter().encodeInstruction(Inst, VecOS, Fixups, STI);
78 // TODO: Handle Fixups later
80 MCDataFragment *DF = getOrCreateDataFragment(&STI);
81 DF->setHasInstructions(STI);
82 DF->getContents().append(Code.begin(), Code.end());
85 MCStreamer *llvm::createXCOFFStreamer(MCContext &Context,
86 std::unique_ptr<MCAsmBackend> &&MAB,
87 std::unique_ptr<MCObjectWriter> &&OW,
88 std::unique_ptr<MCCodeEmitter> &&CE,
89 bool RelaxAll) {
90 MCXCOFFStreamer *S = new MCXCOFFStreamer(Context, std::move(MAB),
91 std::move(OW), std::move(CE));
92 if (RelaxAll)
93 S->getAssembler().setRelaxAll(true);
94 return S;
97 void MCXCOFFStreamer::EmitXCOFFLocalCommonSymbol(MCSymbol *Symbol,
98 uint64_t Size,
99 unsigned ByteAlignment) {
100 EmitCommonSymbol(Symbol, Size, ByteAlignment);