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Remove dead functions

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llvm-svn: 5913
This commit is contained in:
Chris Lattner 2003-04-24 22:53:24 +00:00
parent 7a2b711c95
commit 0df20905d4
2 changed files with 1 additions and 41 deletions
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13
tools/bugpoint/BugDriver.h
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@ -110,19 +110,6 @@ private:
return runPasses(PassesToRun, Filename, DeleteOutput);
}
/// runPass - Run only the specified pass on the program.
///
bool runPass(const PassInfo *P, bool DeleteOutput = true) const {
return runPasses(std::vector<const PassInfo*>(1, P), DeleteOutput);
}
/// extractFunctionFromModule - This method is used to extract the specified
/// (non-external) function from the current program, slim down the module,
/// and then return it. This does not modify Program at all, it modifies a
/// copy, which it returns.
///
Module *extractFunctionFromModule(Function *F) const;
/// deleteInstructionFromProgram - This method clones the current Program and
/// deletes the specified instruction from the cloned module. It then runs a
/// series of cleanup passes (ADCE and SimplifyCFG) to eliminate any code

29
tools/bugpoint/ExtractFunction.cpp
View File

@ -15,31 +15,6 @@
#include "llvm/Type.h"
#include "llvm/Constant.h"
/// extractFunctionFromModule - This method is used to extract the specified
/// (non-external) function from the current program, slim down the module, and
/// then return it. This does not modify Program at all, it modifies a copy,
/// which it returns.
Module *BugDriver::extractFunctionFromModule(Function *F) const {
Module *Result = CloneModule(Program);
// Translate from the old module to the new copied module...
Module::iterator RFI = Result->begin(); // Get iterator to corresponding fn
std::advance(RFI, std::distance(Program->begin(), Module::iterator(F)));
// In addition to just parsing the input from GCC, we also want to spiff it up
// a little bit. Do this now.
//
PassManager Passes;
Passes.add(createFunctionExtractionPass(RFI)); // Extract the function
Passes.add(createGlobalDCEPass()); // Delete unreachable globals
Passes.add(createFunctionResolvingPass()); // Delete prototypes
Passes.add(createDeadTypeEliminationPass()); // Remove dead types...
Passes.add(createVerifierPass());
Passes.run(*Result);
return Result;
}
/// deleteInstructionFromProgram - This method clones the current Program and
/// deletes the specified instruction from the cloned module. It then runs a
/// series of cleanup passes (ADCE and SimplifyCFG) to eliminate any code which
@ -69,9 +44,7 @@ Module *BugDriver::deleteInstructionFromProgram(Instruction *I,
// Remove the instruction from the program.
I->getParent()->getInstList().erase(I);
// In addition to just parsing the input from GCC, we also want to spiff it up
// a little bit. Do this now.
//
// Spiff up the output a little bit.
PassManager Passes;
if (Simplification > 2)
Passes.add(createAggressiveDCEPass()); // Remove dead code...