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https://github.com/c64scene-ar/llvm-6502.git
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9a941b2028
This should be sufficient to replace the initial (minor) function pass pipeline in Clang with the new pass manager. I'll probably add an (off by default) flag to do that just to ensure we can get extra testing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227726 91177308-0d34-0410-b5e6-96231b3b80d8
407 lines
15 KiB
C++
407 lines
15 KiB
C++
//===- Passes.cpp - Parsing, selection, and running of passes -------------===//
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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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/// \file
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///
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/// This file provides the infrastructure to parse and build a custom pass
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/// manager based on a commandline flag. It also provides helpers to aid in
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/// analyzing, debugging, and testing pass structures.
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///
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//===----------------------------------------------------------------------===//
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#include "Passes.h"
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#include "llvm/Analysis/AssumptionCache.h"
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#include "llvm/Analysis/CGSCCPassManager.h"
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#include "llvm/Analysis/LazyCallGraph.h"
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#include "llvm/Analysis/LoopInfo.h"
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#include "llvm/Analysis/TargetLibraryInfo.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/IR/Dominators.h"
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#include "llvm/IR/IRPrintingPasses.h"
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#include "llvm/IR/PassManager.h"
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#include "llvm/IR/Verifier.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Transforms/InstCombine/InstCombine.h"
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#include "llvm/Transforms/Scalar/EarlyCSE.h"
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#include "llvm/Transforms/Scalar/LowerExpectIntrinsic.h"
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#include "llvm/Transforms/Scalar/SimplifyCFG.h"
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using namespace llvm;
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namespace {
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/// \brief No-op module pass which does nothing.
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struct NoOpModulePass {
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PreservedAnalyses run(Module &M) { return PreservedAnalyses::all(); }
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static StringRef name() { return "NoOpModulePass"; }
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};
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/// \brief No-op module analysis.
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struct NoOpModuleAnalysis {
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struct Result {};
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Result run(Module &) { return Result(); }
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static StringRef name() { return "NoOpModuleAnalysis"; }
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static void *ID() { return (void *)&PassID; }
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private:
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static char PassID;
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};
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char NoOpModuleAnalysis::PassID;
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/// \brief No-op CGSCC pass which does nothing.
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struct NoOpCGSCCPass {
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PreservedAnalyses run(LazyCallGraph::SCC &C) {
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return PreservedAnalyses::all();
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}
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static StringRef name() { return "NoOpCGSCCPass"; }
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};
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/// \brief No-op CGSCC analysis.
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struct NoOpCGSCCAnalysis {
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struct Result {};
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Result run(LazyCallGraph::SCC &) { return Result(); }
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static StringRef name() { return "NoOpCGSCCAnalysis"; }
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static void *ID() { return (void *)&PassID; }
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private:
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static char PassID;
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};
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char NoOpCGSCCAnalysis::PassID;
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/// \brief No-op function pass which does nothing.
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struct NoOpFunctionPass {
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PreservedAnalyses run(Function &F) { return PreservedAnalyses::all(); }
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static StringRef name() { return "NoOpFunctionPass"; }
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};
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/// \brief No-op function analysis.
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struct NoOpFunctionAnalysis {
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struct Result {};
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Result run(Function &) { return Result(); }
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static StringRef name() { return "NoOpFunctionAnalysis"; }
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static void *ID() { return (void *)&PassID; }
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private:
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static char PassID;
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};
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char NoOpFunctionAnalysis::PassID;
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} // End anonymous namespace.
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void Passes::registerModuleAnalyses(ModuleAnalysisManager &MAM) {
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#define MODULE_ANALYSIS(NAME, CREATE_PASS) \
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MAM.registerPass(CREATE_PASS);
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#include "PassRegistry.def"
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}
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void Passes::registerCGSCCAnalyses(CGSCCAnalysisManager &CGAM) {
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#define CGSCC_ANALYSIS(NAME, CREATE_PASS) \
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CGAM.registerPass(CREATE_PASS);
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#include "PassRegistry.def"
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}
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void Passes::registerFunctionAnalyses(FunctionAnalysisManager &FAM) {
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#define FUNCTION_ANALYSIS(NAME, CREATE_PASS) \
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FAM.registerPass(CREATE_PASS);
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#include "PassRegistry.def"
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}
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#ifndef NDEBUG
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static bool isModulePassName(StringRef Name) {
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#define MODULE_PASS(NAME, CREATE_PASS) if (Name == NAME) return true;
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#define MODULE_ANALYSIS(NAME, CREATE_PASS) \
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if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">") \
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return true;
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#include "PassRegistry.def"
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return false;
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}
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#endif
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static bool isCGSCCPassName(StringRef Name) {
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#define CGSCC_PASS(NAME, CREATE_PASS) if (Name == NAME) return true;
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#define CGSCC_ANALYSIS(NAME, CREATE_PASS) \
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if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">") \
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return true;
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#include "PassRegistry.def"
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return false;
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}
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static bool isFunctionPassName(StringRef Name) {
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#define FUNCTION_PASS(NAME, CREATE_PASS) if (Name == NAME) return true;
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#define FUNCTION_ANALYSIS(NAME, CREATE_PASS) \
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if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">") \
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return true;
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#include "PassRegistry.def"
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return false;
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}
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bool Passes::parseModulePassName(ModulePassManager &MPM, StringRef Name) {
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#define MODULE_PASS(NAME, CREATE_PASS) \
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if (Name == NAME) { \
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MPM.addPass(CREATE_PASS); \
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return true; \
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}
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#define MODULE_ANALYSIS(NAME, CREATE_PASS) \
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if (Name == "require<" NAME ">") { \
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MPM.addPass(RequireAnalysisPass<decltype(CREATE_PASS)>()); \
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return true; \
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} \
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if (Name == "invalidate<" NAME ">") { \
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MPM.addPass(InvalidateAnalysisPass<decltype(CREATE_PASS)>()); \
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return true; \
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}
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#include "PassRegistry.def"
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return false;
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}
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bool Passes::parseCGSCCPassName(CGSCCPassManager &CGPM, StringRef Name) {
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#define CGSCC_PASS(NAME, CREATE_PASS) \
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if (Name == NAME) { \
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CGPM.addPass(CREATE_PASS); \
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return true; \
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}
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#define CGSCC_ANALYSIS(NAME, CREATE_PASS) \
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if (Name == "require<" NAME ">") { \
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CGPM.addPass(RequireAnalysisPass<decltype(CREATE_PASS)>()); \
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return true; \
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} \
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if (Name == "invalidate<" NAME ">") { \
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CGPM.addPass(InvalidateAnalysisPass<decltype(CREATE_PASS)>()); \
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return true; \
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}
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#include "PassRegistry.def"
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return false;
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}
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bool Passes::parseFunctionPassName(FunctionPassManager &FPM, StringRef Name) {
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#define FUNCTION_PASS(NAME, CREATE_PASS) \
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if (Name == NAME) { \
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FPM.addPass(CREATE_PASS); \
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return true; \
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}
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#define FUNCTION_ANALYSIS(NAME, CREATE_PASS) \
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if (Name == "require<" NAME ">") { \
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FPM.addPass(RequireAnalysisPass<decltype(CREATE_PASS)>()); \
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return true; \
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} \
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if (Name == "invalidate<" NAME ">") { \
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FPM.addPass(InvalidateAnalysisPass<decltype(CREATE_PASS)>()); \
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return true; \
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}
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#include "PassRegistry.def"
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return false;
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}
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bool Passes::parseFunctionPassPipeline(FunctionPassManager &FPM,
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StringRef &PipelineText,
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bool VerifyEachPass, bool DebugLogging) {
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for (;;) {
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// Parse nested pass managers by recursing.
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if (PipelineText.startswith("function(")) {
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FunctionPassManager NestedFPM(DebugLogging);
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// Parse the inner pipeline inte the nested manager.
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PipelineText = PipelineText.substr(strlen("function("));
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if (!parseFunctionPassPipeline(NestedFPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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PipelineText.empty())
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return false;
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assert(PipelineText[0] == ')');
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PipelineText = PipelineText.substr(1);
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// Add the nested pass manager with the appropriate adaptor.
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FPM.addPass(std::move(NestedFPM));
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} else {
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// Otherwise try to parse a pass name.
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size_t End = PipelineText.find_first_of(",)");
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if (!parseFunctionPassName(FPM, PipelineText.substr(0, End)))
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return false;
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if (VerifyEachPass)
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FPM.addPass(VerifierPass());
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PipelineText = PipelineText.substr(End);
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}
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if (PipelineText.empty() || PipelineText[0] == ')')
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return true;
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assert(PipelineText[0] == ',');
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PipelineText = PipelineText.substr(1);
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}
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}
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bool Passes::parseCGSCCPassPipeline(CGSCCPassManager &CGPM,
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StringRef &PipelineText,
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bool VerifyEachPass, bool DebugLogging) {
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for (;;) {
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// Parse nested pass managers by recursing.
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if (PipelineText.startswith("cgscc(")) {
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CGSCCPassManager NestedCGPM(DebugLogging);
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// Parse the inner pipeline into the nested manager.
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PipelineText = PipelineText.substr(strlen("cgscc("));
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if (!parseCGSCCPassPipeline(NestedCGPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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PipelineText.empty())
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return false;
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assert(PipelineText[0] == ')');
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PipelineText = PipelineText.substr(1);
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// Add the nested pass manager with the appropriate adaptor.
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CGPM.addPass(std::move(NestedCGPM));
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} else if (PipelineText.startswith("function(")) {
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FunctionPassManager NestedFPM(DebugLogging);
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// Parse the inner pipeline inte the nested manager.
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PipelineText = PipelineText.substr(strlen("function("));
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if (!parseFunctionPassPipeline(NestedFPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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PipelineText.empty())
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return false;
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assert(PipelineText[0] == ')');
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PipelineText = PipelineText.substr(1);
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// Add the nested pass manager with the appropriate adaptor.
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CGPM.addPass(createCGSCCToFunctionPassAdaptor(std::move(NestedFPM)));
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} else {
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// Otherwise try to parse a pass name.
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size_t End = PipelineText.find_first_of(",)");
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if (!parseCGSCCPassName(CGPM, PipelineText.substr(0, End)))
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return false;
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// FIXME: No verifier support for CGSCC passes!
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PipelineText = PipelineText.substr(End);
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}
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if (PipelineText.empty() || PipelineText[0] == ')')
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return true;
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assert(PipelineText[0] == ',');
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PipelineText = PipelineText.substr(1);
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}
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}
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bool Passes::parseModulePassPipeline(ModulePassManager &MPM,
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StringRef &PipelineText,
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bool VerifyEachPass, bool DebugLogging) {
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for (;;) {
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// Parse nested pass managers by recursing.
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if (PipelineText.startswith("module(")) {
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ModulePassManager NestedMPM(DebugLogging);
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// Parse the inner pipeline into the nested manager.
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PipelineText = PipelineText.substr(strlen("module("));
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if (!parseModulePassPipeline(NestedMPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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PipelineText.empty())
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return false;
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assert(PipelineText[0] == ')');
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PipelineText = PipelineText.substr(1);
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// Now add the nested manager as a module pass.
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MPM.addPass(std::move(NestedMPM));
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} else if (PipelineText.startswith("cgscc(")) {
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CGSCCPassManager NestedCGPM(DebugLogging);
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// Parse the inner pipeline inte the nested manager.
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PipelineText = PipelineText.substr(strlen("cgscc("));
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if (!parseCGSCCPassPipeline(NestedCGPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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PipelineText.empty())
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return false;
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assert(PipelineText[0] == ')');
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PipelineText = PipelineText.substr(1);
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// Add the nested pass manager with the appropriate adaptor.
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MPM.addPass(
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createModuleToPostOrderCGSCCPassAdaptor(std::move(NestedCGPM)));
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} else if (PipelineText.startswith("function(")) {
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FunctionPassManager NestedFPM(DebugLogging);
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// Parse the inner pipeline inte the nested manager.
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PipelineText = PipelineText.substr(strlen("function("));
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if (!parseFunctionPassPipeline(NestedFPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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PipelineText.empty())
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return false;
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assert(PipelineText[0] == ')');
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PipelineText = PipelineText.substr(1);
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// Add the nested pass manager with the appropriate adaptor.
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MPM.addPass(createModuleToFunctionPassAdaptor(std::move(NestedFPM)));
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} else {
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// Otherwise try to parse a pass name.
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size_t End = PipelineText.find_first_of(",)");
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if (!parseModulePassName(MPM, PipelineText.substr(0, End)))
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return false;
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if (VerifyEachPass)
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MPM.addPass(VerifierPass());
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PipelineText = PipelineText.substr(End);
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}
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if (PipelineText.empty() || PipelineText[0] == ')')
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return true;
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assert(PipelineText[0] == ',');
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PipelineText = PipelineText.substr(1);
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}
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}
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// Primary pass pipeline description parsing routine.
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// FIXME: Should this routine accept a TargetMachine or require the caller to
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// pre-populate the analysis managers with target-specific stuff?
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bool Passes::parsePassPipeline(ModulePassManager &MPM, StringRef PipelineText,
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bool VerifyEachPass, bool DebugLogging) {
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// By default, try to parse the pipeline as-if it were within an implicit
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// 'module(...)' pass pipeline. If this will parse at all, it needs to
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// consume the entire string.
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if (parseModulePassPipeline(MPM, PipelineText, VerifyEachPass, DebugLogging))
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return PipelineText.empty();
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// This isn't parsable as a module pipeline, look for the end of a pass name
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// and directly drop down to that layer.
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StringRef FirstName =
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PipelineText.substr(0, PipelineText.find_first_of(",)"));
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assert(!isModulePassName(FirstName) &&
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"Already handled all module pipeline options.");
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// If this looks like a CGSCC pass, parse the whole thing as a CGSCC
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// pipeline.
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if (isCGSCCPassName(FirstName)) {
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CGSCCPassManager CGPM(DebugLogging);
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if (!parseCGSCCPassPipeline(CGPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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!PipelineText.empty())
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return false;
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MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(std::move(CGPM)));
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return true;
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}
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// Similarly, if this looks like a Function pass, parse the whole thing as
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// a Function pipelien.
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if (isFunctionPassName(FirstName)) {
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FunctionPassManager FPM(DebugLogging);
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if (!parseFunctionPassPipeline(FPM, PipelineText, VerifyEachPass,
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DebugLogging) ||
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!PipelineText.empty())
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return false;
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MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
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return true;
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}
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return false;
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}
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