tejohnson created this revision. tejohnson added a reviewer: snehasish. Herald added subscribers: ormris, hiraditya. Herald added a project: All. tejohnson requested review of this revision. Herald added projects: clang, LLVM.
First, removes the invocation of the memprof instrumentation passes from the end of the module simplification pass builder, where it doesn't really belong. However, it turns out that this was never being invoked, as it is guarded by an internal option not used anywhere (even tests). These passes are actually added via clang under the -fmemory-profile option. Changed this to add via the EP callback interface, similar to the sanitizer passes. They are added to the EP for the end of the optimization pipeline, which is roughly where they were being added already (end of the pre-LTO link pipelines and non-LTO optimization pipeline). Ideally we should plumb the output file through to LLVM and set it up there, so I have added a TODO. Repository: rG LLVM Github Monorepo https://reviews.llvm.org/D151593 Files: clang/lib/CodeGen/BackendUtil.cpp llvm/lib/Passes/PassBuilderPipelines.cpp Index: llvm/lib/Passes/PassBuilderPipelines.cpp =================================================================== --- llvm/lib/Passes/PassBuilderPipelines.cpp +++ llvm/lib/Passes/PassBuilderPipelines.cpp @@ -155,9 +155,6 @@ cl::Hidden, cl::desc("Enable inline deferral during PGO")); -static cl::opt<bool> EnableMemProfiler("enable-mem-prof", cl::Hidden, - cl::desc("Enable memory profiler")); - static cl::opt<bool> EnableModuleInliner("enable-module-inliner", cl::init(false), cl::Hidden, cl::desc("Enable module inliner")); @@ -1122,11 +1119,6 @@ MPM.addPass(GlobalOptPass()); MPM.addPass(GlobalDCEPass()); - if (EnableMemProfiler && Phase != ThinOrFullLTOPhase::ThinLTOPreLink) { - MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass())); - MPM.addPass(ModuleMemProfilerPass()); - } - return MPM; } Index: clang/lib/CodeGen/BackendUtil.cpp =================================================================== --- clang/lib/CodeGen/BackendUtil.cpp +++ clang/lib/CodeGen/BackendUtil.cpp @@ -992,6 +992,16 @@ MPM.addPass(InstrProfiling(*Options, false)); }); + // TODO: Consider passing the MemoryProfileOutput to the pass builder via + // the PGOOptions, and set this up there. + if (!CodeGenOpts.MemoryProfileOutput.empty()) { + PB.registerOptimizerLastEPCallback( + [](ModulePassManager &MPM, OptimizationLevel Level) { + MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass())); + MPM.addPass(ModuleMemProfilerPass()); + }); + } + if (IsThinLTO) { MPM = PB.buildThinLTOPreLinkDefaultPipeline(Level); } else if (IsLTO) { @@ -999,11 +1009,6 @@ } else { MPM = PB.buildPerModuleDefaultPipeline(Level); } - - if (!CodeGenOpts.MemoryProfileOutput.empty()) { - MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass())); - MPM.addPass(ModuleMemProfilerPass()); - } } // Add a verifier pass if requested. We don't have to do this if the action
Index: llvm/lib/Passes/PassBuilderPipelines.cpp =================================================================== --- llvm/lib/Passes/PassBuilderPipelines.cpp +++ llvm/lib/Passes/PassBuilderPipelines.cpp @@ -155,9 +155,6 @@ cl::Hidden, cl::desc("Enable inline deferral during PGO")); -static cl::opt<bool> EnableMemProfiler("enable-mem-prof", cl::Hidden, - cl::desc("Enable memory profiler")); - static cl::opt<bool> EnableModuleInliner("enable-module-inliner", cl::init(false), cl::Hidden, cl::desc("Enable module inliner")); @@ -1122,11 +1119,6 @@ MPM.addPass(GlobalOptPass()); MPM.addPass(GlobalDCEPass()); - if (EnableMemProfiler && Phase != ThinOrFullLTOPhase::ThinLTOPreLink) { - MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass())); - MPM.addPass(ModuleMemProfilerPass()); - } - return MPM; } Index: clang/lib/CodeGen/BackendUtil.cpp =================================================================== --- clang/lib/CodeGen/BackendUtil.cpp +++ clang/lib/CodeGen/BackendUtil.cpp @@ -992,6 +992,16 @@ MPM.addPass(InstrProfiling(*Options, false)); }); + // TODO: Consider passing the MemoryProfileOutput to the pass builder via + // the PGOOptions, and set this up there. + if (!CodeGenOpts.MemoryProfileOutput.empty()) { + PB.registerOptimizerLastEPCallback( + [](ModulePassManager &MPM, OptimizationLevel Level) { + MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass())); + MPM.addPass(ModuleMemProfilerPass()); + }); + } + if (IsThinLTO) { MPM = PB.buildThinLTOPreLinkDefaultPipeline(Level); } else if (IsLTO) { @@ -999,11 +1009,6 @@ } else { MPM = PB.buildPerModuleDefaultPipeline(Level); } - - if (!CodeGenOpts.MemoryProfileOutput.empty()) { - MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass())); - MPM.addPass(ModuleMemProfilerPass()); - } } // Add a verifier pass if requested. We don't have to do this if the action
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