d27a210a77
This patch implements IR-based Profile-Guided Optimization support in Flang through the following flags: - `-fprofile-generate` for instrumentation-based profile generation - `-fprofile-use=<dir>/file` for profile-guided optimization Resolves #74216 (implements IR PGO support phase) **Key changes:** - Frontend flag handling aligned with Clang/GCC semantics - Instrumentation hooks into LLVM PGO infrastructure - LIT tests verifying: - Instrumentation metadata generation - Profile loading from specified path - Branch weight attribution (IR checks) **Tests:** - Added gcc-flag-compatibility.f90 test module verifying: - Flag parsing boundary conditions - IR-level profile annotation consistency - Profile input path normalization rules - SPEC2006 benchmark results will be shared in comments For details on LLVM's PGO framework, refer to [Clang PGO Documentation](https://clang.llvm.org/docs/UsersManual.html#profile-guided-optimization). This implementation was developed by [XSCC Compiler Team](https://github.com/orgs/OpenXiangShan/teams/xscc). --------- Co-authored-by: ict-ql <168183727+ict-ql@users.noreply.github.com> Co-authored-by: Tom Eccles <t@freedommail.info>
73 lines
2.7 KiB
C++
73 lines
2.7 KiB
C++
//===--- CodeGenOptions.cpp - Shared codegen option handling --------------===//
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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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#include "llvm/Frontend/Driver/CodeGenOptions.h"
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#include "llvm/Analysis/TargetLibraryInfo.h"
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#include "llvm/ProfileData/InstrProfCorrelator.h"
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#include "llvm/TargetParser/Triple.h"
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namespace llvm {
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extern llvm::cl::opt<bool> DebugInfoCorrelate;
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extern llvm::cl::opt<llvm::InstrProfCorrelator::ProfCorrelatorKind>
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ProfileCorrelate;
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} // namespace llvm
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namespace llvm::driver {
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TargetLibraryInfoImpl *createTLII(const llvm::Triple &TargetTriple,
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driver::VectorLibrary Veclib) {
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TargetLibraryInfoImpl *TLII = new TargetLibraryInfoImpl(TargetTriple);
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using VectorLibrary = llvm::driver::VectorLibrary;
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switch (Veclib) {
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case VectorLibrary::Accelerate:
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TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::Accelerate,
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TargetTriple);
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break;
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case VectorLibrary::LIBMVEC:
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TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::LIBMVEC,
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TargetTriple);
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break;
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case VectorLibrary::MASSV:
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TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::MASSV,
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TargetTriple);
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break;
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case VectorLibrary::SVML:
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TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::SVML,
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TargetTriple);
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break;
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case VectorLibrary::SLEEF:
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TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::SLEEFGNUABI,
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TargetTriple);
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break;
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case VectorLibrary::Darwin_libsystem_m:
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TLII->addVectorizableFunctionsFromVecLib(
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TargetLibraryInfoImpl::DarwinLibSystemM, TargetTriple);
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break;
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case VectorLibrary::ArmPL:
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TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::ArmPL,
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TargetTriple);
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break;
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case VectorLibrary::AMDLIBM:
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TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::AMDLIBM,
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TargetTriple);
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break;
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default:
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break;
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}
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return TLII;
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}
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std::string getDefaultProfileGenName() {
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return llvm::DebugInfoCorrelate ||
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llvm::ProfileCorrelate != InstrProfCorrelator::NONE
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? "default_%m.proflite"
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: "default_%m.profraw";
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}
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} // namespace llvm::driver
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