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
|
//===- bugpoint.cpp - The LLVM Bugpoint utility ---------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This program is an automated compiler debugger tool. It is used to narrow
// down miscompilations and crash problems to a specific pass in the compiler,
// and the specific Module or Function input that is causing the problem.
//
//===----------------------------------------------------------------------===//
#include "BugDriver.h"
#include "ToolRunner.h"
#include "llvm/LinkAllPasses.h"
#include "llvm/LLVMContext.h"
#include "llvm/Support/PassNameParser.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/StandardPasses.h"
#include "llvm/System/Process.h"
#include "llvm/System/Signals.h"
#include "llvm/System/Valgrind.h"
#include "llvm/LinkAllVMCore.h"
using namespace llvm;
// AsChild - Specifies that this invocation of bugpoint is being generated
// from a parent process. It is not intended to be used by users so the
// option is hidden.
static cl::opt<bool>
AsChild("as-child", cl::desc("Run bugpoint as child process"),
cl::ReallyHidden);
static cl::opt<bool>
FindBugs("find-bugs", cl::desc("Run many different optimization sequences "
"on program to find bugs"), cl::init(false));
static cl::list<std::string>
InputFilenames(cl::Positional, cl::OneOrMore,
cl::desc("<input llvm ll/bc files>"));
static cl::opt<unsigned>
TimeoutValue("timeout", cl::init(300), cl::value_desc("seconds"),
cl::desc("Number of seconds program is allowed to run before it "
"is killed (default is 300s), 0 disables timeout"));
static cl::opt<int>
MemoryLimit("mlimit", cl::init(-1), cl::value_desc("MBytes"),
cl::desc("Maximum amount of memory to use. 0 disables check."
" Defaults to 100MB (800MB under valgrind)."));
static cl::opt<bool>
UseValgrind("enable-valgrind",
cl::desc("Run optimizations through valgrind"));
// The AnalysesList is automatically populated with registered Passes by the
// PassNameParser.
//
static cl::list<const PassInfo*, bool, PassNameParser>
PassList(cl::desc("Passes available:"), cl::ZeroOrMore);
static cl::opt<bool>
StandardCompileOpts("std-compile-opts",
cl::desc("Include the standard compile time optimizations"));
static cl::opt<bool>
StandardLinkOpts("std-link-opts",
cl::desc("Include the standard link time optimizations"));
static cl::opt<std::string>
OverrideTriple("mtriple", cl::desc("Override target triple for module"));
/// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
bool llvm::BugpointIsInterrupted = false;
static void BugpointInterruptFunction() {
BugpointIsInterrupted = true;
}
// Hack to capture a pass list.
namespace {
class AddToDriver : public PassManager {
BugDriver &D;
public:
AddToDriver(BugDriver &_D) : D(_D) {}
virtual void add(Pass *P) {
const void *ID = P->getPassID();
const PassInfo *PI = PassRegistry::getPassRegistry()->getPassInfo(ID);
D.addPasses(&PI, &PI + 1);
}
};
}
int main(int argc, char **argv) {
llvm::sys::PrintStackTraceOnErrorSignal();
llvm::PrettyStackTraceProgram X(argc, argv);
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv,
"LLVM automatic testcase reducer. See\nhttp://"
"llvm.org/cmds/bugpoint.html"
" for more information.\n");
sys::SetInterruptFunction(BugpointInterruptFunction);
LLVMContext& Context = getGlobalContext();
// If we have an override, set it and then track the triple we want Modules
// to use.
if (!OverrideTriple.empty()) {
TargetTriple.setTriple(OverrideTriple);
outs() << "Override triple set to '" << OverrideTriple << "'\n";
}
if (MemoryLimit < 0) {
// Set the default MemoryLimit. Be sure to update the flag's description if
// you change this.
if (sys::RunningOnValgrind() || UseValgrind)
MemoryLimit = 800;
else
MemoryLimit = 100;
}
BugDriver D(argv[0], AsChild, FindBugs, TimeoutValue, MemoryLimit,
UseValgrind, Context);
if (D.addSources(InputFilenames)) return 1;
AddToDriver PM(D);
if (StandardCompileOpts) {
createStandardModulePasses(&PM, 3,
/*OptimizeSize=*/ false,
/*UnitAtATime=*/ true,
/*UnrollLoops=*/ true,
/*SimplifyLibCalls=*/ true,
/*HaveExceptions=*/ true,
createFunctionInliningPass());
}
if (StandardLinkOpts)
createStandardLTOPasses(&PM, /*Internalize=*/true,
/*RunInliner=*/true,
/*VerifyEach=*/false);
D.addPasses(PassList.begin(), PassList.end());
// Bugpoint has the ability of generating a plethora of core files, so to
// avoid filling up the disk, we prevent it
sys::Process::PreventCoreFiles();
std::string Error;
bool Failure = D.run(Error);
if (!Error.empty()) {
errs() << Error;
return 1;
}
return Failure;
}
|
