6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
144 lines
6.3 KiB
C++
144 lines
6.3 KiB
C++
//===- llvm/PassSupport.h - Pass Support code -------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines stuff that is used to define and "use" Passes. This file
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// is automatically #included by Pass.h, so:
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//
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// NO .CPP FILES SHOULD INCLUDE THIS FILE DIRECTLY
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//
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// Instead, #include Pass.h.
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//
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// This file defines Pass registration code and classes used for it.
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//
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//===----------------------------------------------------------------------===//
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#if !defined(LLVM_PASS_H) || defined(LLVM_PASSSUPPORT_H)
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#error "Do not include <PassSupport.h>; include <Pass.h> instead"
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#endif
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#ifndef LLVM_PASSSUPPORT_H
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#define LLVM_PASSSUPPORT_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/PassInfo.h"
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#include "llvm/PassRegistry.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/Threading.h"
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#include <functional>
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namespace llvm {
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class Pass;
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#define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \
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static void *initialize##passName##PassOnce(PassRegistry &Registry) { \
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PassInfo *PI = new PassInfo( \
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name, arg, &passName::ID, \
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PassInfo::NormalCtor_t(callDefaultCtor<passName>), cfg, analysis); \
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Registry.registerPass(*PI, true); \
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return PI; \
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} \
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static llvm::once_flag Initialize##passName##PassFlag; \
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void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
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llvm::call_once(Initialize##passName##PassFlag, \
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initialize##passName##PassOnce, std::ref(Registry)); \
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}
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#define INITIALIZE_PASS_BEGIN(passName, arg, name, cfg, analysis) \
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static void *initialize##passName##PassOnce(PassRegistry &Registry) {
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#define INITIALIZE_PASS_DEPENDENCY(depName) initialize##depName##Pass(Registry);
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#define INITIALIZE_PASS_END(passName, arg, name, cfg, analysis) \
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PassInfo *PI = new PassInfo( \
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name, arg, &passName::ID, \
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PassInfo::NormalCtor_t(callDefaultCtor<passName>), cfg, analysis); \
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Registry.registerPass(*PI, true); \
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return PI; \
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} \
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static llvm::once_flag Initialize##passName##PassFlag; \
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void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
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llvm::call_once(Initialize##passName##PassFlag, \
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initialize##passName##PassOnce, std::ref(Registry)); \
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}
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#define INITIALIZE_PASS_WITH_OPTIONS(PassName, Arg, Name, Cfg, Analysis) \
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INITIALIZE_PASS_BEGIN(PassName, Arg, Name, Cfg, Analysis) \
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PassName::registerOptions(); \
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INITIALIZE_PASS_END(PassName, Arg, Name, Cfg, Analysis)
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#define INITIALIZE_PASS_WITH_OPTIONS_BEGIN(PassName, Arg, Name, Cfg, Analysis) \
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INITIALIZE_PASS_BEGIN(PassName, Arg, Name, Cfg, Analysis) \
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PassName::registerOptions();
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template <
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class PassName,
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std::enable_if_t<std::is_default_constructible<PassName>{}, bool> = true>
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Pass *callDefaultCtor() {
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return new PassName();
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}
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template <
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class PassName,
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std::enable_if_t<!std::is_default_constructible<PassName>{}, bool> = true>
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Pass *callDefaultCtor() {
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// Some codegen passes should only be testable via
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// `llc -{start|stop}-{before|after}=<passname>`, not via `opt -<passname>`.
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report_fatal_error("target-specific codegen-only pass");
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}
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//===---------------------------------------------------------------------------
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/// RegisterPass<t> template - This template class is used to notify the system
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/// that a Pass is available for use, and registers it into the internal
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/// database maintained by the PassManager. Unless this template is used, opt,
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/// for example will not be able to see the pass and attempts to create the pass
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/// will fail. This template is used in the follow manner (at global scope, in
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/// your .cpp file):
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///
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/// static RegisterPass<YourPassClassName> tmp("passopt", "My Pass Name");
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///
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/// This statement will cause your pass to be created by calling the default
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/// constructor exposed by the pass.
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template <typename passName> struct RegisterPass : public PassInfo {
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// Register Pass using default constructor...
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RegisterPass(StringRef PassArg, StringRef Name, bool CFGOnly = false,
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bool is_analysis = false)
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: PassInfo(Name, PassArg, &passName::ID,
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PassInfo::NormalCtor_t(callDefaultCtor<passName>), CFGOnly,
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is_analysis) {
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PassRegistry::getPassRegistry()->registerPass(*this);
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}
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};
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//===---------------------------------------------------------------------------
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/// PassRegistrationListener class - This class is meant to be derived from by
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/// clients that are interested in which passes get registered and unregistered
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/// at runtime (which can be because of the RegisterPass constructors being run
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/// as the program starts up, or may be because a shared object just got
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/// loaded).
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struct PassRegistrationListener {
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PassRegistrationListener() = default;
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virtual ~PassRegistrationListener() = default;
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/// Callback functions - These functions are invoked whenever a pass is loaded
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/// or removed from the current executable.
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virtual void passRegistered(const PassInfo *) {}
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/// enumeratePasses - Iterate over the registered passes, calling the
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/// passEnumerate callback on each PassInfo object.
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void enumeratePasses();
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/// passEnumerate - Callback function invoked when someone calls
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/// enumeratePasses on this PassRegistrationListener object.
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virtual void passEnumerate(const PassInfo *) {}
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};
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} // end namespace llvm
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#endif // LLVM_PASSSUPPORT_H
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