1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
//===-- RISCVTargetMachine.cpp - Define TargetMachine for RISCV -----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Implements the info about RISCV target spec.
//
//===----------------------------------------------------------------------===//
#include "RISCVTargetMachine.h"
#include "RISCV.h"
#include "RISCVTargetObjectFile.h"
#include "RISCVTargetTransformInfo.h"
#include "TargetInfo/RISCVTargetInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/CodeGen/GlobalISel/IRTranslator.h"
#include "llvm/CodeGen/GlobalISel/InstructionSelect.h"
#include "llvm/CodeGen/GlobalISel/Legalizer.h"
#include "llvm/CodeGen/GlobalISel/RegBankSelect.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Target/TargetOptions.h"
using namespace llvm;
extern "C" void LLVMInitializeRISCVTarget() {
RegisterTargetMachine<RISCVTargetMachine> X(getTheRISCV32Target());
RegisterTargetMachine<RISCVTargetMachine> Y(getTheRISCV64Target());
auto PR = PassRegistry::getPassRegistry();
initializeGlobalISel(*PR);
initializeRISCVExpandPseudoPass(*PR);
}
static StringRef computeDataLayout(const Triple &TT) {
if (TT.isArch64Bit()) {
return "e-m:e-p:64:64-i64:64-i128:128-n64-S128";
} else {
assert(TT.isArch32Bit() && "only RV32 and RV64 are currently supported");
return "e-m:e-p:32:32-i64:64-n32-S128";
}
}
static Reloc::Model getEffectiveRelocModel(const Triple &TT,
Optional<Reloc::Model> RM) {
if (!RM.hasValue())
return Reloc::Static;
return *RM;
}
RISCVTargetMachine::RISCVTargetMachine(const Target &T, const Triple &TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Optional<Reloc::Model> RM,
Optional<CodeModel::Model> CM,
CodeGenOpt::Level OL, bool JIT)
: LLVMTargetMachine(T, computeDataLayout(TT), TT, CPU, FS, Options,
getEffectiveRelocModel(TT, RM),
getEffectiveCodeModel(CM, CodeModel::Small), OL),
TLOF(std::make_unique<RISCVELFTargetObjectFile>()),
Subtarget(TT, CPU, FS, Options.MCOptions.getABIName(), *this) {
initAsmInfo();
}
TargetTransformInfo
RISCVTargetMachine::getTargetTransformInfo(const Function &F) {
return TargetTransformInfo(RISCVTTIImpl(this, F));
}
namespace {
class RISCVPassConfig : public TargetPassConfig {
public:
RISCVPassConfig(RISCVTargetMachine &TM, PassManagerBase &PM)
: TargetPassConfig(TM, PM) {}
RISCVTargetMachine &getRISCVTargetMachine() const {
return getTM<RISCVTargetMachine>();
}
void addIRPasses() override;
bool addInstSelector() override;
bool addIRTranslator() override;
bool addLegalizeMachineIR() override;
bool addRegBankSelect() override;
bool addGlobalInstructionSelect() override;
void addPreEmitPass() override;
void addPreEmitPass2() override;
void addPreRegAlloc() override;
};
}
TargetPassConfig *RISCVTargetMachine::createPassConfig(PassManagerBase &PM) {
return new RISCVPassConfig(*this, PM);
}
void RISCVPassConfig::addIRPasses() {
addPass(createAtomicExpandPass());
TargetPassConfig::addIRPasses();
}
bool RISCVPassConfig::addInstSelector() {
addPass(createRISCVISelDag(getRISCVTargetMachine()));
return false;
}
bool RISCVPassConfig::addIRTranslator() {
addPass(new IRTranslator());
return false;
}
bool RISCVPassConfig::addLegalizeMachineIR() {
addPass(new Legalizer());
return false;
}
bool RISCVPassConfig::addRegBankSelect() {
addPass(new RegBankSelect());
return false;
}
bool RISCVPassConfig::addGlobalInstructionSelect() {
addPass(new InstructionSelect());
return false;
}
void RISCVPassConfig::addPreEmitPass() { addPass(&BranchRelaxationPassID); }
void RISCVPassConfig::addPreEmitPass2() {
// Schedule the expansion of AMOs at the last possible moment, avoiding the
// possibility for other passes to break the requirements for forward
// progress in the LR/SC block.
addPass(createRISCVExpandPseudoPass());
}
void RISCVPassConfig::addPreRegAlloc() {
addPass(createRISCVMergeBaseOffsetOptPass());
}
|
