6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
//===- Utils.h - Utility functions for code generation ----------*- 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 contains utility functions for the code generation.
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//===----------------------------------------------------------------------===//
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#ifndef POLLY_CODEGEN_UTILS_H
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#define POLLY_CODEGEN_UTILS_H
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#include <utility>
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namespace llvm {
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class Pass;
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class Value;
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class BasicBlock;
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class DominatorTree;
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class RegionInfo;
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class LoopInfo;
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class BranchInst;
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} // namespace llvm
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namespace polly {
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class Scop;
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using BBPair = std::pair<llvm::BasicBlock *, llvm::BasicBlock *>;
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/// Execute a Scop conditionally wrt @p RTC.
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///
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/// In the CFG the optimized code of the Scop is generated next to the
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/// original code. Both the new and the original version of the code remain
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/// in the CFG. A branch statement decides which version is executed based on
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/// the runtime value of @p RTC.
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///
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/// Before transformation:
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///
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/// bb0
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/// |
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/// orig_scop
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/// |
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/// bb1
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///
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/// After transformation:
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/// bb0
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/// |
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/// polly.splitBlock
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/// / \.
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/// | startBlock
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/// | |
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/// orig_scop new_scop
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/// \ /
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/// \ /
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/// bb1 (joinBlock)
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///
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/// @param S The Scop to execute conditionally.
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/// @param P A reference to the pass calling this function.
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/// @param RTC The runtime condition checked before executing the new SCoP.
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///
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/// @return An std::pair:
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/// - The first element is a BBPair of (StartBlock, EndBlock).
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/// - The second element is the BranchInst which conditionally
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/// branches to the SCoP based on the RTC.
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///
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std::pair<BBPair, llvm::BranchInst *>
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executeScopConditionally(Scop &S, llvm::Value *RTC, llvm::DominatorTree &DT,
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llvm::RegionInfo &RI, llvm::LoopInfo &LI);
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} // namespace polly
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#endif
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