LLVM  15.0.0git
LowerGlobalDtors.h
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1 //===- LowerGlobalDtors.h - Lower @llvm.global_dtors ----------------------===//
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 pass lowers @llvm.global_dtors by creating wrapper functions that are
10 // registered in @llvm.global_ctors and which contain a call to `__cxa_atexit`
11 // to register their destructor functions.
12 //
13 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_TRANSFORMS_UTILS_LOWERGLOBALDTORS_H
15 #define LLVM_TRANSFORMS_UTILS_LOWERGLOBALDTORS_H
16 
17 #include "llvm/IR/PassManager.h"
18 
19 namespace llvm {
20 
21 class LowerGlobalDtorsPass : public PassInfoMixin<LowerGlobalDtorsPass> {
22 public:
24 };
25 
26 } // namespace llvm
27 
28 #endif // LLVM_TRANSFORMS_UTILS_LOWERGLOBALDTORS_H
llvm::PreservedAnalyses
A set of analyses that are preserved following a run of a transformation pass.
Definition: PassManager.h:152
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:17
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::LowerGlobalDtorsPass
Definition: LowerGlobalDtors.h:21
llvm::PassInfoMixin
A CRTP mix-in to automatically provide informational APIs needed for passes.
Definition: PassManager.h:371
llvm::LowerGlobalDtorsPass::run
PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM)
Definition: LowerGlobalDtors.cpp:65
llvm::Module
A Module instance is used to store all the information related to an LLVM module.
Definition: Module.h:65
PassManager.h
llvm::AnalysisManager
A container for analyses that lazily runs them and caches their results.
Definition: InstructionSimplify.h:42