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Use CloneModule's ValueMap in more places, instead of looking

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up functions by name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69805 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-04-22 15:57:18 +00:00
parent e370c80d31
commit d50330cd02
3 changed files with 45 additions and 27 deletions
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5
tools/bugpoint/BugDriver.h
View File

@ -16,11 +16,13 @@
#ifndef BUGDRIVER_H
#define BUGDRIVER_H
#include "llvm/ADT/DenseMap.h"
#include <vector>
#include <string>
namespace llvm {
class Value;
class PassInfo;
class Module;
class GlobalVariable;
@ -312,7 +314,8 @@ void DeleteFunctionBody(Function *F);
/// SplitFunctionsOutOfModule - Given a module and a list of functions in the
/// module, split the functions OUT of the specified module, and place them in
/// the new module.
Module *SplitFunctionsOutOfModule(Module *M, const std::vector<Function*> &F);
Module *SplitFunctionsOutOfModule(Module *M, const std::vector<Function*> &F,
DenseMap<const Value*, Value*> &ValueMap);
} // End llvm namespace

32
tools/bugpoint/ExtractFunction.cpp
View File

@ -197,7 +197,8 @@ static Constant *GetTorInit(std::vector<std::pair<Function*, int> > &TorList) {
/// M1 has all of the global variables. If M2 contains any functions that are
/// static ctors/dtors, we need to add an llvm.global_[cd]tors global to M2, and
/// prune appropriate entries out of M1s list.
static void SplitStaticCtorDtor(const char *GlobalName, Module *M1, Module *M2){
static void SplitStaticCtorDtor(const char *GlobalName, Module *M1, Module *M2,
DenseMap<const Value*, Value*> ValueMap) {
GlobalVariable *GV = M1->getNamedGlobal(GlobalName);
if (!GV || GV->isDeclaration() || GV->hasLocalLinkage() ||
!GV->use_empty()) return;
@ -225,7 +226,7 @@ static void SplitStaticCtorDtor(const char *GlobalName, Module *M1, Module *M2){
M1Tors.push_back(std::make_pair(F, Priority));
else {
// Map to M2's version of the function.
F = M2->getFunction(F->getName());
F = cast<Function>(ValueMap[F]);
M2Tors.push_back(std::make_pair(F, Priority));
}
}
@ -255,8 +256,10 @@ static void SplitStaticCtorDtor(const char *GlobalName, Module *M1, Module *M2){
/// SplitFunctionsOutOfModule - Given a module and a list of functions in the
/// module, split the functions OUT of the specified module, and place them in
/// the new module.
Module *llvm::SplitFunctionsOutOfModule(Module *M,
const std::vector<Function*> &F) {
Module *
llvm::SplitFunctionsOutOfModule(Module *M,
const std::vector<Function*> &F,
DenseMap<const Value*, Value*> &ValueMap) {
// Make sure functions & globals are all external so that linkage
// between the two modules will work.
for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
@ -268,7 +271,8 @@ Module *llvm::SplitFunctionsOutOfModule(Module *M,
I->setLinkage(GlobalValue::ExternalLinkage);
}
Module *New = CloneModule(M);
DenseMap<const Value*, Value*> NewValueMap;
Module *New = CloneModule(M, NewValueMap);
// Make sure global initializers exist only in the safe module (CBE->.so)
for (Module::global_iterator I = New->global_begin(), E = New->global_end();
@ -276,27 +280,27 @@ Module *llvm::SplitFunctionsOutOfModule(Module *M,
I->setInitializer(0); // Delete the initializer to make it external
// Remove the Test functions from the Safe module
std::set<std::pair<std::string, const PointerType*> > TestFunctions;
std::set<Function *> TestFunctions;
for (unsigned i = 0, e = F.size(); i != e; ++i) {
TestFunctions.insert(std::make_pair(F[i]->getName(), F[i]->getType()));
Function *TNOF = M->getFunction(F[i]->getName());
assert(TNOF && "Function doesn't exist in module!");
assert(TNOF->getFunctionType() == F[i]->getFunctionType() && "wrong type?");
DEBUG(std::cerr << "Removing function " << F[i]->getName() << "\n");
Function *TNOF = cast<Function>(ValueMap[F[i]]);
DEBUG(std::cerr << "Removing function ");
DEBUG(WriteAsOperand(std::cerr, TNOF, false));
DEBUG(std::cerr << "\n");
TestFunctions.insert(cast<Function>(NewValueMap[TNOF]));
DeleteFunctionBody(TNOF); // Function is now external in this module!
}
// Remove the Safe functions from the Test module
for (Module::iterator I = New->begin(), E = New->end(); I != E; ++I)
if (!TestFunctions.count(std::make_pair(I->getName(), I->getType())))
if (!TestFunctions.count(I))
DeleteFunctionBody(I);
// Make sure that there is a global ctor/dtor array in both halves of the
// module if they both have static ctor/dtor functions.
SplitStaticCtorDtor("llvm.global_ctors", M, New);
SplitStaticCtorDtor("llvm.global_dtors", M, New);
SplitStaticCtorDtor("llvm.global_ctors", M, New, NewValueMap);
SplitStaticCtorDtor("llvm.global_dtors", M, New, NewValueMap);
return New;
}

35
tools/bugpoint/Miscompilation.cpp
View File

@ -220,8 +220,10 @@ bool ReduceMiscompilingFunctions::TestFuncs(const std::vector<Function*>&Funcs){
std::cout << '\n';
// Split the module into the two halves of the program we want.
Module *ToNotOptimize = CloneModule(BD.getProgram());
Module *ToOptimize = SplitFunctionsOutOfModule(ToNotOptimize, Funcs);
DenseMap<const Value*, Value*> ValueMap;
Module *ToNotOptimize = CloneModule(BD.getProgram(), ValueMap);
Module *ToOptimize = SplitFunctionsOutOfModule(ToNotOptimize, Funcs,
ValueMap);
// Run the predicate, note that the predicate will delete both input modules.
return TestFn(BD, ToOptimize, ToNotOptimize);
@ -258,9 +260,11 @@ static bool ExtractLoops(BugDriver &BD,
while (1) {
if (BugpointIsInterrupted) return MadeChange;
Module *ToNotOptimize = CloneModule(BD.getProgram());
DenseMap<const Value*, Value*> ValueMap;
Module *ToNotOptimize = CloneModule(BD.getProgram(), ValueMap);
Module *ToOptimize = SplitFunctionsOutOfModule(ToNotOptimize,
MiscompiledFunctions);
MiscompiledFunctions,
ValueMap);
Module *ToOptimizeLoopExtracted = BD.ExtractLoop(ToOptimize);
if (!ToOptimizeLoopExtracted) {
// If the loop extractor crashed or if there were no extractible loops,
@ -396,9 +400,11 @@ bool ReduceMiscompiledBlocks::TestFuncs(const std::vector<BasicBlock*> &BBs) {
std::cout << '\n';
// Split the module into the two halves of the program we want.
Module *ToNotOptimize = CloneModule(BD.getProgram());
DenseMap<const Value*, Value*> ValueMap;
Module *ToNotOptimize = CloneModule(BD.getProgram(), ValueMap);
Module *ToOptimize = SplitFunctionsOutOfModule(ToNotOptimize,
FunctionsBeingTested);
FunctionsBeingTested,
ValueMap);
// Try the extraction. If it doesn't work, then the block extractor crashed
// or something, in which case bugpoint can't chase down this possibility.
@ -443,9 +449,11 @@ static bool ExtractBlocks(BugDriver &BD,
return false;
}
Module *ProgClone = CloneModule(BD.getProgram());
DenseMap<const Value*, Value*> ValueMap;
Module *ProgClone = CloneModule(BD.getProgram(), ValueMap);
Module *ToExtract = SplitFunctionsOutOfModule(ProgClone,
MiscompiledFunctions);
MiscompiledFunctions,
ValueMap);
Module *Extracted = BD.ExtractMappedBlocksFromModule(Blocks, ToExtract);
if (Extracted == 0) {
// Weird, extraction should have worked.
@ -608,9 +616,11 @@ bool BugDriver::debugMiscompilation() {
// Output a bunch of bitcode files for the user...
std::cout << "Outputting reduced bitcode files which expose the problem:\n";
Module *ToNotOptimize = CloneModule(getProgram());
DenseMap<const Value*, Value*> ValueMap;
Module *ToNotOptimize = CloneModule(getProgram(), ValueMap);
Module *ToOptimize = SplitFunctionsOutOfModule(ToNotOptimize,
MiscompiledFunctions);
MiscompiledFunctions,
ValueMap);
std::cout << " Non-optimized portion: ";
ToNotOptimize = swapProgramIn(ToNotOptimize);
@ -856,8 +866,9 @@ bool BugDriver::debugCodeGenerator() {
std::vector<Function*> Funcs = DebugAMiscompilation(*this, TestCodeGenerator);
// Split the module into the two halves of the program we want.
Module *ToNotCodeGen = CloneModule(getProgram());
Module *ToCodeGen = SplitFunctionsOutOfModule(ToNotCodeGen, Funcs);
DenseMap<const Value*, Value*> ValueMap;
Module *ToNotCodeGen = CloneModule(getProgram(), ValueMap);
Module *ToCodeGen = SplitFunctionsOutOfModule(ToNotCodeGen, Funcs, ValueMap);
// Condition the modules
CleanupAndPrepareModules(*this, ToCodeGen, ToNotCodeGen);