LLVM  13.0.0git
ElimAvailExtern.h
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1 //===- ElimAvailExtern.h - Optimize Global Variables ------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This transform is designed to eliminate available external global
10 // definitions from the program, turning them into declarations.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_TRANSFORMS_IPO_ELIMAVAILEXTERN_H
15 #define LLVM_TRANSFORMS_IPO_ELIMAVAILEXTERN_H
16 
17 #include "llvm/IR/PassManager.h"
18 
19 namespace llvm {
20 
21 class Module;
22 
23 /// A pass that transforms external global definitions into declarations.
25  : public PassInfoMixin<EliminateAvailableExternallyPass> {
26 public:
28 };
29 
30 } // end namespace llvm
31 
32 #endif // LLVM_TRANSFORMS_IPO_ELIMAVAILEXTERN_H
llvm::PreservedAnalyses
A set of analyses that are preserved following a run of a transformation pass.
Definition: PassManager.h:155
llvm
Definition: AllocatorList.h:23
M
We currently emits eax Perhaps this is what we really should generate is Is imull three or four cycles eax eax The current instruction priority is based on pattern complexity The former is more complex because it folds a load so the latter will not be emitted Perhaps we should use AddedComplexity to give LEA32r a higher priority We should always try to match LEA first since the LEA matching code does some estimate to determine whether the match is profitable if we care more about code then imull is better It s two bytes shorter than movl leal On a Pentium M
Definition: README.txt:252
llvm::PassInfoMixin
A CRTP mix-in to automatically provide informational APIs needed for passes.
Definition: PassManager.h:374
llvm::EliminateAvailableExternallyPass
A pass that transforms external global definitions into declarations.
Definition: ElimAvailExtern.h:24
llvm::Module
A Module instance is used to store all the information related to an LLVM module.
Definition: Module.h:67
Module
Machine Check Debug Module
Definition: MachineCheckDebugify.cpp:122
PassManager.h
llvm::EliminateAvailableExternallyPass::run
PreservedAnalyses run(Module &M, ModuleAnalysisManager &)
Definition: ElimAvailExtern.cpp:68
llvm::AnalysisManager
A container for analyses that lazily runs them and caches their results.
Definition: InstructionSimplify.h:44