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0b8c9a80f2
into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
//===- FindUsedTypes.cpp - Find all Types used by a module ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This pass is used to seek out all of the types in use by the program. Note
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// that this analysis explicitly does not include types only used by the symbol
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// table.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/FindUsedTypes.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/InstIterator.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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char FindUsedTypes::ID = 0;
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INITIALIZE_PASS(FindUsedTypes, "print-used-types",
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"Find Used Types", false, true)
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// IncorporateType - Incorporate one type and all of its subtypes into the
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// collection of used types.
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//
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void FindUsedTypes::IncorporateType(Type *Ty) {
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// If ty doesn't already exist in the used types map, add it now, otherwise
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// return.
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if (!UsedTypes.insert(Ty)) return; // Already contain Ty.
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// Make sure to add any types this type references now.
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//
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for (Type::subtype_iterator I = Ty->subtype_begin(), E = Ty->subtype_end();
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I != E; ++I)
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IncorporateType(*I);
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}
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void FindUsedTypes::IncorporateValue(const Value *V) {
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IncorporateType(V->getType());
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// If this is a constant, it could be using other types...
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if (const Constant *C = dyn_cast<Constant>(V)) {
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if (!isa<GlobalValue>(C))
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for (User::const_op_iterator OI = C->op_begin(), OE = C->op_end();
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OI != OE; ++OI)
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IncorporateValue(*OI);
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}
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}
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// run - This incorporates all types used by the specified module
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//
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bool FindUsedTypes::runOnModule(Module &m) {
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UsedTypes.clear(); // reset if run multiple times...
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// Loop over global variables, incorporating their types
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for (Module::const_global_iterator I = m.global_begin(), E = m.global_end();
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I != E; ++I) {
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IncorporateType(I->getType());
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if (I->hasInitializer())
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IncorporateValue(I->getInitializer());
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}
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for (Module::iterator MI = m.begin(), ME = m.end(); MI != ME; ++MI) {
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IncorporateType(MI->getType());
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const Function &F = *MI;
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// Loop over all of the instructions in the function, adding their return
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// type as well as the types of their operands.
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//
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for (const_inst_iterator II = inst_begin(F), IE = inst_end(F);
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II != IE; ++II) {
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const Instruction &I = *II;
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IncorporateType(I.getType()); // Incorporate the type of the instruction
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for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end();
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OI != OE; ++OI)
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IncorporateValue(*OI); // Insert inst operand types as well
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}
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}
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return false;
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}
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// Print the types found in the module. If the optional Module parameter is
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// passed in, then the types are printed symbolically if possible, using the
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// symbol table from the module.
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//
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void FindUsedTypes::print(raw_ostream &OS, const Module *M) const {
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OS << "Types in use by this module:\n";
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for (SetVector<Type *>::const_iterator I = UsedTypes.begin(),
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E = UsedTypes.end(); I != E; ++I) {
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OS << " " << **I << '\n';
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}
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}
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