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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
//===---- Canonicalization.cpp - Run canonicalization passes --------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Run the set of default canonicalization passes.
//
// This pass is mainly used for debugging.
//
//===----------------------------------------------------------------------===//
#include "polly/Canonicalization.h"
#include "polly/LinkAllPasses.h"
#include "polly/Options.h"
#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/Analysis/ProfileSummaryInfo.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/IPO/FunctionAttrs.h"
#include "llvm/Transforms/InstCombine/InstCombine.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Scalar/EarlyCSE.h"
#include "llvm/Transforms/Scalar/IndVarSimplify.h"
#include "llvm/Transforms/Scalar/LoopRotation.h"
#include "llvm/Transforms/Scalar/Reassociate.h"
#include "llvm/Transforms/Scalar/SimplifyCFG.h"
#include "llvm/Transforms/Scalar/TailRecursionElimination.h"
#include "llvm/Transforms/Utils.h"
#include "llvm/Transforms/Utils/Mem2Reg.h"
using namespace llvm;
using namespace polly;
static cl::opt<bool>
PollyInliner("polly-run-inliner",
cl::desc("Run an early inliner pass before Polly"), cl::Hidden,
cl::init(false), cl::ZeroOrMore, cl::cat(PollyCategory));
void polly::registerCanonicalicationPasses(llvm::legacy::PassManagerBase &PM) {
bool UseMemSSA = true;
PM.add(llvm::createPromoteMemoryToRegisterPass());
PM.add(llvm::createEarlyCSEPass(UseMemSSA));
PM.add(llvm::createInstructionCombiningPass());
PM.add(llvm::createCFGSimplificationPass());
PM.add(llvm::createTailCallEliminationPass());
PM.add(llvm::createCFGSimplificationPass());
PM.add(llvm::createReassociatePass());
PM.add(llvm::createLoopRotatePass());
if (PollyInliner) {
PM.add(llvm::createFunctionInliningPass(200));
PM.add(llvm::createPromoteMemoryToRegisterPass());
PM.add(llvm::createCFGSimplificationPass());
PM.add(llvm::createInstructionCombiningPass());
PM.add(createBarrierNoopPass());
}
PM.add(llvm::createInstructionCombiningPass());
PM.add(llvm::createIndVarSimplifyPass());
}
/// Adapted from llvm::PassBuilder::buildInlinerPipeline
static ModuleInlinerWrapperPass
buildInlinePasses(llvm::OptimizationLevel Level) {
InlineParams IP = getInlineParams(200);
ModuleInlinerWrapperPass MIWP(IP);
// Require the GlobalsAA analysis for the module so we can query it within
// the CGSCC pipeline.
MIWP.addModulePass(RequireAnalysisPass<GlobalsAA, Module>());
// Invalidate AAManager so it can be recreated and pick up the newly available
// GlobalsAA.
MIWP.addModulePass(
createModuleToFunctionPassAdaptor(InvalidateAnalysisPass<AAManager>()));
// Require the ProfileSummaryAnalysis for the module so we can query it within
// the inliner pass.
MIWP.addModulePass(RequireAnalysisPass<ProfileSummaryAnalysis, Module>());
// Now begin the main postorder CGSCC pipeline.
// FIXME: The current CGSCC pipeline has its origins in the legacy pass
// manager and trying to emulate its precise behavior. Much of this doesn't
// make a lot of sense and we should revisit the core CGSCC structure.
CGSCCPassManager &MainCGPipeline = MIWP.getPM();
// Now deduce any function attributes based in the current code.
MainCGPipeline.addPass(PostOrderFunctionAttrsPass());
return MIWP;
}
FunctionPassManager
polly::buildCanonicalicationPassesForNPM(llvm::ModulePassManager &MPM,
llvm::OptimizationLevel Level) {
FunctionPassManager FPM;
bool UseMemSSA = true;
FPM.addPass(PromotePass());
FPM.addPass(EarlyCSEPass(UseMemSSA));
FPM.addPass(InstCombinePass());
FPM.addPass(SimplifyCFGPass());
FPM.addPass(TailCallElimPass());
FPM.addPass(SimplifyCFGPass());
FPM.addPass(ReassociatePass());
{
LoopPassManager LPM;
LPM.addPass(LoopRotatePass(Level != OptimizationLevel::Oz));
FPM.addPass(createFunctionToLoopPassAdaptor<LoopPassManager>(
std::move(LPM), /*UseMemorySSA=*/false,
/*UseBlockFrequencyInfo=*/false));
}
if (PollyInliner) {
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
MPM.addPass(buildInlinePasses(Level));
FPM = FunctionPassManager();
FPM.addPass(PromotePass());
FPM.addPass(SimplifyCFGPass());
FPM.addPass(InstCombinePass());
}
FPM.addPass(InstCombinePass());
{
LoopPassManager LPM;
LPM.addPass(IndVarSimplifyPass());
FPM.addPass(createFunctionToLoopPassAdaptor<LoopPassManager>(
std::move(LPM), /*UseMemorySSA=*/false,
/*UseBlockFrequencyInfo=*/true));
}
return FPM;
}
namespace {
class PollyCanonicalize : public ModulePass {
PollyCanonicalize(const PollyCanonicalize &) = delete;
const PollyCanonicalize &operator=(const PollyCanonicalize &) = delete;
public:
static char ID;
explicit PollyCanonicalize() : ModulePass(ID) {}
~PollyCanonicalize();
/// @name FunctionPass interface.
//@{
void getAnalysisUsage(AnalysisUsage &AU) const override;
void releaseMemory() override;
bool runOnModule(Module &M) override;
void print(raw_ostream &OS, const Module *) const override;
//@}
};
} // namespace
PollyCanonicalize::~PollyCanonicalize() {}
void PollyCanonicalize::getAnalysisUsage(AnalysisUsage &AU) const {}
void PollyCanonicalize::releaseMemory() {}
bool PollyCanonicalize::runOnModule(Module &M) {
legacy::PassManager PM;
registerCanonicalicationPasses(PM);
PM.run(M);
return true;
}
void PollyCanonicalize::print(raw_ostream &OS, const Module *) const {}
char PollyCanonicalize::ID = 0;
Pass *polly::createPollyCanonicalizePass() { return new PollyCanonicalize(); }
INITIALIZE_PASS_BEGIN(PollyCanonicalize, "polly-canonicalize",
"Polly - Run canonicalization passes", false, false)
INITIALIZE_PASS_END(PollyCanonicalize, "polly-canonicalize",
"Polly - Run canonicalization passes", false, false)
|
