1//===- BugDriver.h - Top-Level BugPoint class -------------------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This class contains all of the shared state and information that is used by
11// the BugPoint tool to track down errors in optimizations. This class is the
12// main driver class that invokes all sub-functionality.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef BUGDRIVER_H
17#define BUGDRIVER_H
18
19#include "llvm/ADT/DenseMap.h"
20#include <vector>
21#include <string>
22
23namespace llvm {
24
25class Value;
26class PassInfo;
27class Module;
28class GlobalVariable;
29class Function;
30class BasicBlock;
31class AbstractInterpreter;
32class Instruction;
33
34class DebugCrashes;
35
36class GCC;
37
38extern bool DisableSimplifyCFG;
39
40/// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
41///
42extern bool BugpointIsInterrupted;
43
44class BugDriver {
45 const std::string ToolName; // Name of bugpoint
46 std::string ReferenceOutputFile; // Name of `good' output file
47 Module *Program; // The raw program, linked together
48 std::vector<const PassInfo*> PassesToRun;
49 AbstractInterpreter *Interpreter; // How to run the program
50 AbstractInterpreter *SafeInterpreter; // To generate reference output, etc.
51 GCC *gcc;
52 bool run_as_child;
53 bool run_find_bugs;
54 unsigned Timeout;
55 unsigned MemoryLimit;
56
57 // FIXME: sort out public/private distinctions...
58 friend class ReducePassList;
59 friend class ReduceMisCodegenFunctions;
60
61public:
62 BugDriver(const char *toolname, bool as_child, bool find_bugs,
63 unsigned timeout, unsigned memlimit);
64
65 const std::string &getToolName() const { return ToolName; }
66
67 // Set up methods... these methods are used to copy information about the
68 // command line arguments into instance variables of BugDriver.
69 //
70 bool addSources(const std::vector<std::string> &FileNames);
71 template<class It>
72 void addPasses(It I, It E) { PassesToRun.insert(PassesToRun.end(), I, E); }
73 void setPassesToRun(const std::vector<const PassInfo*> &PTR) {
74 PassesToRun = PTR;
75 }
76 const std::vector<const PassInfo*> &getPassesToRun() const {
77 return PassesToRun;
78 }
79
80 /// run - The top level method that is invoked after all of the instance
81 /// variables are set up from command line arguments. The \p as_child argument
82 /// indicates whether the driver is to run in parent mode or child mode.
83 ///
84 bool run();
85
86 /// debugOptimizerCrash - This method is called when some optimizer pass
87 /// crashes on input. It attempts to prune down the testcase to something
88 /// reasonable, and figure out exactly which pass is crashing.
89 ///
90 bool debugOptimizerCrash(const std::string &ID = "passes");
91
92 /// debugCodeGeneratorCrash - This method is called when the code generator
93 /// crashes on an input. It attempts to reduce the input as much as possible
94 /// while still causing the code generator to crash.
95 bool debugCodeGeneratorCrash();
96
97 /// debugMiscompilation - This method is used when the passes selected are not
98 /// crashing, but the generated output is semantically different from the
99 /// input.
100 bool debugMiscompilation();
101
102 /// debugPassMiscompilation - This method is called when the specified pass
103 /// miscompiles Program as input. It tries to reduce the testcase to
104 /// something that smaller that still miscompiles the program.
105 /// ReferenceOutput contains the filename of the file containing the output we
106 /// are to match.
107 ///
108 bool debugPassMiscompilation(const PassInfo *ThePass,
109 const std::string &ReferenceOutput);
110
111 /// compileSharedObject - This method creates a SharedObject from a given
112 /// BitcodeFile for debugging a code generator.
113 ///
114 std::string compileSharedObject(const std::string &BitcodeFile);
115
116 /// debugCodeGenerator - This method narrows down a module to a function or
117 /// set of functions, using the CBE as a ``safe'' code generator for other
118 /// functions that are not under consideration.
119 bool debugCodeGenerator();
120
121 /// isExecutingJIT - Returns true if bugpoint is currently testing the JIT
122 ///
123 bool isExecutingJIT();
124
125 /// runPasses - Run all of the passes in the "PassesToRun" list, discard the
126 /// output, and return true if any of the passes crashed.
127 bool runPasses(Module *M = 0) {
128 if (M == 0) M = Program;
129 std::swap(M, Program);
130 bool Result = runPasses(PassesToRun);
131 std::swap(M, Program);
132 return Result;
133 }
134
135 Module *getProgram() const { return Program; }
136
137 /// swapProgramIn - Set the current module to the specified module, returning
138 /// the old one.
139 Module *swapProgramIn(Module *M) {
140 Module *OldProgram = Program;
141 Program = M;
142 return OldProgram;
143 }
144
145 AbstractInterpreter *switchToSafeInterpreter() {
146 AbstractInterpreter *Old = Interpreter;
147 Interpreter = (AbstractInterpreter*)SafeInterpreter;
148 return Old;
149 }
150
151 void switchToInterpreter(AbstractInterpreter *AI) {
152 Interpreter = AI;
153 }
154
155 /// setNewProgram - If we reduce or update the program somehow, call this
156 /// method to update bugdriver with it. This deletes the old module and sets
157 /// the specified one as the current program.
158 void setNewProgram(Module *M);
159
160 /// compileProgram - Try to compile the specified module, throwing an
161 /// exception if an error occurs, or returning normally if not. This is used
162 /// for code generation crash testing.
163 ///
164 void compileProgram(Module *M);
165
166 /// executeProgram - This method runs "Program", capturing the output of the
167 /// program to a file, returning the filename of the file. A recommended
168 /// filename may be optionally specified. If there is a problem with the code
169 /// generator (e.g., llc crashes), this will throw an exception.
170 ///
171 std::string executeProgram(std::string RequestedOutputFilename = "",
172 std::string Bitcode = "",
173 const std::string &SharedObjects = "",
174 AbstractInterpreter *AI = 0,
175 bool *ProgramExitedNonzero = 0);
176
177 /// executeProgramSafely - Used to create reference output with the "safe"
178 /// backend, if reference output is not provided. If there is a problem with
179 /// the code generator (e.g., llc crashes), this will throw an exception.
180 ///
181 std::string executeProgramSafely(std::string OutputFile = "");
182
183 /// createReferenceFile - calls compileProgram and then records the output
184 /// into ReferenceOutputFile. Returns true if reference file created, false
185 /// otherwise. Note: initializeExecutionEnvironment should be called BEFORE
186 /// this function.
187 ///
188 bool createReferenceFile(Module *M, const std::string &Filename
189 = "bugpoint.reference.out");
190
191 /// diffProgram - This method executes the specified module and diffs the
192 /// output against the file specified by ReferenceOutputFile. If the output
193 /// is different, true is returned. If there is a problem with the code
194 /// generator (e.g., llc crashes), this will throw an exception.
195 ///
196 bool diffProgram(const std::string &BitcodeFile = "",
197 const std::string &SharedObj = "",
198 bool RemoveBitcode = false);
199
200 /// EmitProgressBitcode - This function is used to output the current Program
201 /// to a file named "bugpoint-ID.bc".
202 ///
203 void EmitProgressBitcode(const std::string &ID, bool NoFlyer = false);
204
205 /// deleteInstructionFromProgram - This method clones the current Program and
206 /// deletes the specified instruction from the cloned module. It then runs a
207 /// series of cleanup passes (ADCE and SimplifyCFG) to eliminate any code
208 /// which depends on the value. The modified module is then returned.
209 ///
210 Module *deleteInstructionFromProgram(const Instruction *I, unsigned Simp)
211 const;
212
213 /// performFinalCleanups - This method clones the current Program and performs
214 /// a series of cleanups intended to get rid of extra cruft on the module. If
215 /// the MayModifySemantics argument is true, then the cleanups is allowed to
216 /// modify how the code behaves.
217 ///
218 Module *performFinalCleanups(Module *M, bool MayModifySemantics = false);
219
220 /// ExtractLoop - Given a module, extract up to one loop from it into a new
221 /// function. This returns null if there are no extractable loops in the
222 /// program or if the loop extractor crashes.
223 Module *ExtractLoop(Module *M);
224
225 /// ExtractMappedBlocksFromModule - Extract all but the specified basic blocks
226 /// into their own functions. The only detail is that M is actually a module
227 /// cloned from the one the BBs are in, so some mapping needs to be performed.
228 /// If this operation fails for some reason (ie the implementation is buggy),
229 /// this function should return null, otherwise it returns a new Module.
230 Module *ExtractMappedBlocksFromModule(const std::vector<BasicBlock*> &BBs,
231 Module *M);
232
233 /// runPassesOn - Carefully run the specified set of pass on the specified
234 /// module, returning the transformed module on success, or a null pointer on
235 /// failure. If AutoDebugCrashes is set to true, then bugpoint will
236 /// automatically attempt to track down a crashing pass if one exists, and
237 /// this method will never return null.
238 Module *runPassesOn(Module *M, const std::vector<const PassInfo*> &Passes,
239 bool AutoDebugCrashes = false, unsigned NumExtraArgs = 0,
240 const char * const *ExtraArgs = NULL);
241
242 /// runPasses - Run the specified passes on Program, outputting a bitcode
243 /// file and writting the filename into OutputFile if successful. If the
244 /// optimizations fail for some reason (optimizer crashes), return true,
245 /// otherwise return false. If DeleteOutput is set to true, the bitcode is
246 /// deleted on success, and the filename string is undefined. This prints to
247 /// cout a single line message indicating whether compilation was successful
248 /// or failed, unless Quiet is set. ExtraArgs specifies additional arguments
249 /// to pass to the child bugpoint instance.
250 ///
251 bool runPasses(const std::vector<const PassInfo*> &PassesToRun,
252 std::string &OutputFilename, bool DeleteOutput = false,
253 bool Quiet = false, unsigned NumExtraArgs = 0,
254 const char * const *ExtraArgs = NULL) const;
255
256 /// runManyPasses - Take the specified pass list and create different
257 /// combinations of passes to compile the program with. Compile the program with
258 /// each set and mark test to see if it compiled correctly. If the passes
259 /// compiled correctly output nothing and rearrange the passes into a new order.
260 /// If the passes did not compile correctly, output the command required to
261 /// recreate the failure. This returns true if a compiler error is found.
262 ///
263 bool runManyPasses(const std::vector<const PassInfo*> &AllPasses);
264
265 /// writeProgramToFile - This writes the current "Program" to the named
266 /// bitcode file. If an error occurs, true is returned.
267 ///
268 bool writeProgramToFile(const std::string &Filename, Module *M = 0) const;
269
270private:
271 /// runPasses - Just like the method above, but this just returns true or
272 /// false indicating whether or not the optimizer crashed on the specified
273 /// input (true = crashed).
274 ///
275 bool runPasses(const std::vector<const PassInfo*> &PassesToRun,
276 bool DeleteOutput = true) const {
277 std::string Filename;
278 return runPasses(PassesToRun, Filename, DeleteOutput);
279 }
280
281 /// runAsChild - The actual "runPasses" guts that runs in a child process.
282 int runPassesAsChild(const std::vector<const PassInfo*> &PassesToRun);
283
284 /// initializeExecutionEnvironment - This method is used to set up the
285 /// environment for executing LLVM programs.
286 ///
287 bool initializeExecutionEnvironment();
288};
289
290/// ParseInputFile - Given a bitcode or assembly input filename, parse and
291/// return it, or return null if not possible.
292///
293Module *ParseInputFile(const std::string &InputFilename);
294
295
296/// getPassesString - Turn a list of passes into a string which indicates the
297/// command line options that must be passed to add the passes.
298///
299std::string getPassesString(const std::vector<const PassInfo*> &Passes);
300
301/// PrintFunctionList - prints out list of problematic functions
302///
303void PrintFunctionList(const std::vector<Function*> &Funcs);
304
305/// PrintGlobalVariableList - prints out list of problematic global variables
306///
307void PrintGlobalVariableList(const std::vector<GlobalVariable*> &GVs);
308
309// DeleteFunctionBody - "Remove" the function by deleting all of it's basic
310// blocks, making it external.
311//
312void DeleteFunctionBody(Function *F);
313
314/// SplitFunctionsOutOfModule - Given a module and a list of functions in the
315/// module, split the functions OUT of the specified module, and place them in
316/// the new module.
317Module *SplitFunctionsOutOfModule(Module *M, const std::vector<Function*> &F,
318 DenseMap<const Value*, Value*> &ValueMap);
319
320} // End llvm namespace
321
322#endif
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This class contains all of the shared state and information that is used by
11// the BugPoint tool to track down errors in optimizations. This class is the
12// main driver class that invokes all sub-functionality.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef BUGDRIVER_H
17#define BUGDRIVER_H
18
19#include "llvm/ADT/DenseMap.h"
20#include <vector>
21#include <string>
22
23namespace llvm {
24
25class Value;
26class PassInfo;
27class Module;
28class GlobalVariable;
29class Function;
30class BasicBlock;
31class AbstractInterpreter;
32class Instruction;
33
34class DebugCrashes;
35
36class GCC;
37
38extern bool DisableSimplifyCFG;
39
40/// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
41///
42extern bool BugpointIsInterrupted;
43
44class BugDriver {
45 const std::string ToolName; // Name of bugpoint
46 std::string ReferenceOutputFile; // Name of `good' output file
47 Module *Program; // The raw program, linked together
48 std::vector<const PassInfo*> PassesToRun;
49 AbstractInterpreter *Interpreter; // How to run the program
50 AbstractInterpreter *SafeInterpreter; // To generate reference output, etc.
51 GCC *gcc;
52 bool run_as_child;
53 bool run_find_bugs;
54 unsigned Timeout;
55 unsigned MemoryLimit;
56
57 // FIXME: sort out public/private distinctions...
58 friend class ReducePassList;
59 friend class ReduceMisCodegenFunctions;
60
61public:
62 BugDriver(const char *toolname, bool as_child, bool find_bugs,
63 unsigned timeout, unsigned memlimit);
64
65 const std::string &getToolName() const { return ToolName; }
66
67 // Set up methods... these methods are used to copy information about the
68 // command line arguments into instance variables of BugDriver.
69 //
70 bool addSources(const std::vector<std::string> &FileNames);
71 template<class It>
72 void addPasses(It I, It E) { PassesToRun.insert(PassesToRun.end(), I, E); }
73 void setPassesToRun(const std::vector<const PassInfo*> &PTR) {
74 PassesToRun = PTR;
75 }
76 const std::vector<const PassInfo*> &getPassesToRun() const {
77 return PassesToRun;
78 }
79
80 /// run - The top level method that is invoked after all of the instance
81 /// variables are set up from command line arguments. The \p as_child argument
82 /// indicates whether the driver is to run in parent mode or child mode.
83 ///
84 bool run();
85
86 /// debugOptimizerCrash - This method is called when some optimizer pass
87 /// crashes on input. It attempts to prune down the testcase to something
88 /// reasonable, and figure out exactly which pass is crashing.
89 ///
90 bool debugOptimizerCrash(const std::string &ID = "passes");
91
92 /// debugCodeGeneratorCrash - This method is called when the code generator
93 /// crashes on an input. It attempts to reduce the input as much as possible
94 /// while still causing the code generator to crash.
95 bool debugCodeGeneratorCrash();
96
97 /// debugMiscompilation - This method is used when the passes selected are not
98 /// crashing, but the generated output is semantically different from the
99 /// input.
100 bool debugMiscompilation();
101
102 /// debugPassMiscompilation - This method is called when the specified pass
103 /// miscompiles Program as input. It tries to reduce the testcase to
104 /// something that smaller that still miscompiles the program.
105 /// ReferenceOutput contains the filename of the file containing the output we
106 /// are to match.
107 ///
108 bool debugPassMiscompilation(const PassInfo *ThePass,
109 const std::string &ReferenceOutput);
110
111 /// compileSharedObject - This method creates a SharedObject from a given
112 /// BitcodeFile for debugging a code generator.
113 ///
114 std::string compileSharedObject(const std::string &BitcodeFile);
115
116 /// debugCodeGenerator - This method narrows down a module to a function or
117 /// set of functions, using the CBE as a ``safe'' code generator for other
118 /// functions that are not under consideration.
119 bool debugCodeGenerator();
120
121 /// isExecutingJIT - Returns true if bugpoint is currently testing the JIT
122 ///
123 bool isExecutingJIT();
124
125 /// runPasses - Run all of the passes in the "PassesToRun" list, discard the
126 /// output, and return true if any of the passes crashed.
127 bool runPasses(Module *M = 0) {
128 if (M == 0) M = Program;
129 std::swap(M, Program);
130 bool Result = runPasses(PassesToRun);
131 std::swap(M, Program);
132 return Result;
133 }
134
135 Module *getProgram() const { return Program; }
136
137 /// swapProgramIn - Set the current module to the specified module, returning
138 /// the old one.
139 Module *swapProgramIn(Module *M) {
140 Module *OldProgram = Program;
141 Program = M;
142 return OldProgram;
143 }
144
145 AbstractInterpreter *switchToSafeInterpreter() {
146 AbstractInterpreter *Old = Interpreter;
147 Interpreter = (AbstractInterpreter*)SafeInterpreter;
148 return Old;
149 }
150
151 void switchToInterpreter(AbstractInterpreter *AI) {
152 Interpreter = AI;
153 }
154
155 /// setNewProgram - If we reduce or update the program somehow, call this
156 /// method to update bugdriver with it. This deletes the old module and sets
157 /// the specified one as the current program.
158 void setNewProgram(Module *M);
159
160 /// compileProgram - Try to compile the specified module, throwing an
161 /// exception if an error occurs, or returning normally if not. This is used
162 /// for code generation crash testing.
163 ///
164 void compileProgram(Module *M);
165
166 /// executeProgram - This method runs "Program", capturing the output of the
167 /// program to a file, returning the filename of the file. A recommended
168 /// filename may be optionally specified. If there is a problem with the code
169 /// generator (e.g., llc crashes), this will throw an exception.
170 ///
171 std::string executeProgram(std::string RequestedOutputFilename = "",
172 std::string Bitcode = "",
173 const std::string &SharedObjects = "",
174 AbstractInterpreter *AI = 0,
175 bool *ProgramExitedNonzero = 0);
176
177 /// executeProgramSafely - Used to create reference output with the "safe"
178 /// backend, if reference output is not provided. If there is a problem with
179 /// the code generator (e.g., llc crashes), this will throw an exception.
180 ///
181 std::string executeProgramSafely(std::string OutputFile = "");
182
183 /// createReferenceFile - calls compileProgram and then records the output
184 /// into ReferenceOutputFile. Returns true if reference file created, false
185 /// otherwise. Note: initializeExecutionEnvironment should be called BEFORE
186 /// this function.
187 ///
188 bool createReferenceFile(Module *M, const std::string &Filename
189 = "bugpoint.reference.out");
190
191 /// diffProgram - This method executes the specified module and diffs the
192 /// output against the file specified by ReferenceOutputFile. If the output
193 /// is different, true is returned. If there is a problem with the code
194 /// generator (e.g., llc crashes), this will throw an exception.
195 ///
196 bool diffProgram(const std::string &BitcodeFile = "",
197 const std::string &SharedObj = "",
198 bool RemoveBitcode = false);
199
200 /// EmitProgressBitcode - This function is used to output the current Program
201 /// to a file named "bugpoint-ID.bc".
202 ///
203 void EmitProgressBitcode(const std::string &ID, bool NoFlyer = false);
204
205 /// deleteInstructionFromProgram - This method clones the current Program and
206 /// deletes the specified instruction from the cloned module. It then runs a
207 /// series of cleanup passes (ADCE and SimplifyCFG) to eliminate any code
208 /// which depends on the value. The modified module is then returned.
209 ///
210 Module *deleteInstructionFromProgram(const Instruction *I, unsigned Simp)
211 const;
212
213 /// performFinalCleanups - This method clones the current Program and performs
214 /// a series of cleanups intended to get rid of extra cruft on the module. If
215 /// the MayModifySemantics argument is true, then the cleanups is allowed to
216 /// modify how the code behaves.
217 ///
218 Module *performFinalCleanups(Module *M, bool MayModifySemantics = false);
219
220 /// ExtractLoop - Given a module, extract up to one loop from it into a new
221 /// function. This returns null if there are no extractable loops in the
222 /// program or if the loop extractor crashes.
223 Module *ExtractLoop(Module *M);
224
225 /// ExtractMappedBlocksFromModule - Extract all but the specified basic blocks
226 /// into their own functions. The only detail is that M is actually a module
227 /// cloned from the one the BBs are in, so some mapping needs to be performed.
228 /// If this operation fails for some reason (ie the implementation is buggy),
229 /// this function should return null, otherwise it returns a new Module.
230 Module *ExtractMappedBlocksFromModule(const std::vector<BasicBlock*> &BBs,
231 Module *M);
232
233 /// runPassesOn - Carefully run the specified set of pass on the specified
234 /// module, returning the transformed module on success, or a null pointer on
235 /// failure. If AutoDebugCrashes is set to true, then bugpoint will
236 /// automatically attempt to track down a crashing pass if one exists, and
237 /// this method will never return null.
238 Module *runPassesOn(Module *M, const std::vector<const PassInfo*> &Passes,
239 bool AutoDebugCrashes = false, unsigned NumExtraArgs = 0,
240 const char * const *ExtraArgs = NULL);
241
242 /// runPasses - Run the specified passes on Program, outputting a bitcode
243 /// file and writting the filename into OutputFile if successful. If the
244 /// optimizations fail for some reason (optimizer crashes), return true,
245 /// otherwise return false. If DeleteOutput is set to true, the bitcode is
246 /// deleted on success, and the filename string is undefined. This prints to
247 /// cout a single line message indicating whether compilation was successful
248 /// or failed, unless Quiet is set. ExtraArgs specifies additional arguments
249 /// to pass to the child bugpoint instance.
250 ///
251 bool runPasses(const std::vector<const PassInfo*> &PassesToRun,
252 std::string &OutputFilename, bool DeleteOutput = false,
253 bool Quiet = false, unsigned NumExtraArgs = 0,
254 const char * const *ExtraArgs = NULL) const;
255
256 /// runManyPasses - Take the specified pass list and create different
257 /// combinations of passes to compile the program with. Compile the program with
258 /// each set and mark test to see if it compiled correctly. If the passes
259 /// compiled correctly output nothing and rearrange the passes into a new order.
260 /// If the passes did not compile correctly, output the command required to
261 /// recreate the failure. This returns true if a compiler error is found.
262 ///
263 bool runManyPasses(const std::vector<const PassInfo*> &AllPasses);
264
265 /// writeProgramToFile - This writes the current "Program" to the named
266 /// bitcode file. If an error occurs, true is returned.
267 ///
268 bool writeProgramToFile(const std::string &Filename, Module *M = 0) const;
269
270private:
271 /// runPasses - Just like the method above, but this just returns true or
272 /// false indicating whether or not the optimizer crashed on the specified
273 /// input (true = crashed).
274 ///
275 bool runPasses(const std::vector<const PassInfo*> &PassesToRun,
276 bool DeleteOutput = true) const {
277 std::string Filename;
278 return runPasses(PassesToRun, Filename, DeleteOutput);
279 }
280
281 /// runAsChild - The actual "runPasses" guts that runs in a child process.
282 int runPassesAsChild(const std::vector<const PassInfo*> &PassesToRun);
283
284 /// initializeExecutionEnvironment - This method is used to set up the
285 /// environment for executing LLVM programs.
286 ///
287 bool initializeExecutionEnvironment();
288};
289
290/// ParseInputFile - Given a bitcode or assembly input filename, parse and
291/// return it, or return null if not possible.
292///
293Module *ParseInputFile(const std::string &InputFilename);
294
295
296/// getPassesString - Turn a list of passes into a string which indicates the
297/// command line options that must be passed to add the passes.
298///
299std::string getPassesString(const std::vector<const PassInfo*> &Passes);
300
301/// PrintFunctionList - prints out list of problematic functions
302///
303void PrintFunctionList(const std::vector<Function*> &Funcs);
304
305/// PrintGlobalVariableList - prints out list of problematic global variables
306///
307void PrintGlobalVariableList(const std::vector<GlobalVariable*> &GVs);
308
309// DeleteFunctionBody - "Remove" the function by deleting all of it's basic
310// blocks, making it external.
311//
312void DeleteFunctionBody(Function *F);
313
314/// SplitFunctionsOutOfModule - Given a module and a list of functions in the
315/// module, split the functions OUT of the specified module, and place them in
316/// the new module.
317Module *SplitFunctionsOutOfModule(Module *M, const std::vector<Function*> &F,
318 DenseMap<const Value*, Value*> &ValueMap);
319
320} // End llvm namespace
321
322#endif