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https://github.com/c64scene-ar/llvm-6502.git
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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
107 lines
3.3 KiB
C++
107 lines
3.3 KiB
C++
//===- InstCombineWorklist.h - Worklist for the InstCombine pass ----------===//
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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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#ifndef INSTCOMBINE_WORKLIST_H
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#define INSTCOMBINE_WORKLIST_H
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#define DEBUG_TYPE "instcombine"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/IR/Instruction.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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/// InstCombineWorklist - This is the worklist management logic for
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/// InstCombine.
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class LLVM_LIBRARY_VISIBILITY InstCombineWorklist {
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SmallVector<Instruction*, 256> Worklist;
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DenseMap<Instruction*, unsigned> WorklistMap;
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void operator=(const InstCombineWorklist&RHS) LLVM_DELETED_FUNCTION;
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InstCombineWorklist(const InstCombineWorklist&) LLVM_DELETED_FUNCTION;
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public:
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InstCombineWorklist() {}
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bool isEmpty() const { return Worklist.empty(); }
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/// Add - Add the specified instruction to the worklist if it isn't already
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/// in it.
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void Add(Instruction *I) {
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if (WorklistMap.insert(std::make_pair(I, Worklist.size())).second) {
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DEBUG(errs() << "IC: ADD: " << *I << '\n');
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Worklist.push_back(I);
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}
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}
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void AddValue(Value *V) {
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if (Instruction *I = dyn_cast<Instruction>(V))
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Add(I);
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}
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/// AddInitialGroup - Add the specified batch of stuff in reverse order.
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/// which should only be done when the worklist is empty and when the group
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/// has no duplicates.
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void AddInitialGroup(Instruction *const *List, unsigned NumEntries) {
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assert(Worklist.empty() && "Worklist must be empty to add initial group");
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Worklist.reserve(NumEntries+16);
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WorklistMap.resize(NumEntries);
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DEBUG(errs() << "IC: ADDING: " << NumEntries << " instrs to worklist\n");
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for (unsigned Idx = 0; NumEntries; --NumEntries) {
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Instruction *I = List[NumEntries-1];
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WorklistMap.insert(std::make_pair(I, Idx++));
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Worklist.push_back(I);
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}
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}
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// Remove - remove I from the worklist if it exists.
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void Remove(Instruction *I) {
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DenseMap<Instruction*, unsigned>::iterator It = WorklistMap.find(I);
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if (It == WorklistMap.end()) return; // Not in worklist.
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// Don't bother moving everything down, just null out the slot.
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Worklist[It->second] = 0;
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WorklistMap.erase(It);
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}
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Instruction *RemoveOne() {
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Instruction *I = Worklist.back();
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Worklist.pop_back();
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WorklistMap.erase(I);
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return I;
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}
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/// AddUsersToWorkList - When an instruction is simplified, add all users of
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/// the instruction to the work lists because they might get more simplified
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/// now.
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///
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void AddUsersToWorkList(Instruction &I) {
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for (Value::use_iterator UI = I.use_begin(), UE = I.use_end();
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UI != UE; ++UI)
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Add(cast<Instruction>(*UI));
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}
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/// Zap - check that the worklist is empty and nuke the backing store for
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/// the map if it is large.
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void Zap() {
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assert(WorklistMap.empty() && "Worklist empty, but map not?");
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// Do an explicit clear, this shrinks the map if needed.
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WorklistMap.clear();
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}
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};
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} // end namespace llvm.
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#endif
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