mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
class. The Method class is obsolete (renamed) and all references to it are being converted over to Function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2144 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
//===- FindUsedTypes.cpp - Find all Types used by a module ------------------=//
|
|
//
|
|
// This pass is used to seek out all of the types in use by the program.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/FindUsedTypes.h"
|
|
#include "llvm/Assembly/CachedWriter.h"
|
|
#include "llvm/SymbolTable.h"
|
|
#include "llvm/GlobalVariable.h"
|
|
#include "llvm/DerivedTypes.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Function.h"
|
|
#include "llvm/Instruction.h"
|
|
#include "llvm/Support/InstIterator.h"
|
|
|
|
AnalysisID FindUsedTypes::ID(AnalysisID::create<FindUsedTypes>());
|
|
AnalysisID FindUsedTypes::IncludeSymbolTableID(AnalysisID::create<FindUsedTypes>());
|
|
|
|
// IncorporateType - Incorporate one type and all of its subtypes into the
|
|
// collection of used types.
|
|
//
|
|
void FindUsedTypes::IncorporateType(const Type *Ty) {
|
|
if (UsedTypes.count(Ty)) return; // Already contain Ty.
|
|
|
|
// If ty doesn't already exist in the used types map, add it now.
|
|
//
|
|
UsedTypes.insert(Ty);
|
|
|
|
// Make sure to add any types this type references now.
|
|
//
|
|
for (Type::subtype_iterator I = Ty->subtype_begin(), E = Ty->subtype_end();
|
|
I != E; ++I)
|
|
IncorporateType(*I);
|
|
}
|
|
|
|
// IncorporateSymbolTable - Add all types referenced by the specified symtab
|
|
// into the collection of used types.
|
|
//
|
|
void FindUsedTypes::IncorporateSymbolTable(const SymbolTable *ST) {
|
|
assert(0 && "Unimp");
|
|
}
|
|
|
|
// run - This incorporates all types used by the specified module
|
|
//
|
|
bool FindUsedTypes::run(Module *m) {
|
|
UsedTypes.clear(); // reset if run multiple times...
|
|
|
|
if (IncludeSymbolTables && m->hasSymbolTable())
|
|
IncorporateSymbolTable(m->getSymbolTable()); // Add symtab first...
|
|
|
|
// Loop over global variables, incorporating their types
|
|
for (Module::const_giterator I = m->gbegin(), E = m->gend(); I != E; ++I)
|
|
IncorporateType((*I)->getType());
|
|
|
|
for (Module::iterator MI = m->begin(), ME = m->end(); MI != ME; ++MI) {
|
|
const Function *M = *MI;
|
|
if (IncludeSymbolTables && M->hasSymbolTable())
|
|
IncorporateSymbolTable(M->getSymbolTable()); // Add symtab first...
|
|
|
|
// Loop over all of the instructions in the function, adding their return
|
|
// type as well as the types of their operands.
|
|
//
|
|
for (const_inst_iterator II = inst_begin(M), IE = inst_end(M);
|
|
II != IE; ++II) {
|
|
const Instruction *I = *II;
|
|
const Type *Ty = I->getType();
|
|
|
|
IncorporateType(Ty); // Incorporate the type of the instruction
|
|
for (User::const_op_iterator OI = I->op_begin(), OE = I->op_end();
|
|
OI != OE; ++OI)
|
|
if ((*OI)->getType() != Ty) // Avoid set lookup in common case
|
|
IncorporateType((*OI)->getType());// Insert inst operand types as well
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// Print the types found in the module. If the optional Module parameter is
|
|
// passed in, then the types are printed symbolically if possible, using the
|
|
// symbol table from the module.
|
|
//
|
|
void FindUsedTypes::printTypes(std::ostream &o, const Module *M = 0) const {
|
|
o << "Types in use by this module:\n";
|
|
if (M) {
|
|
CachedWriter CW(M, o);
|
|
for (std::set<const Type *>::const_iterator I = UsedTypes.begin(),
|
|
E = UsedTypes.end(); I != E; ++I)
|
|
CW << " " << *I << "\n";
|
|
} else
|
|
for (std::set<const Type *>::const_iterator I = UsedTypes.begin(),
|
|
E = UsedTypes.end(); I != E; ++I)
|
|
o << " " << *I << "\n";
|
|
}
|
|
|
|
// getAnalysisUsageInfo - Of course, we provide ourself...
|
|
//
|
|
void FindUsedTypes::getAnalysisUsageInfo(Pass::AnalysisSet &Required,
|
|
Pass::AnalysisSet &Destroyed,
|
|
Pass::AnalysisSet &Provided) {
|
|
Provided.push_back(FindUsedTypes::ID);
|
|
}
|