6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
//===- SCCP.h - Sparse Conditional Constant Propagation ---------*- 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 pass implements interprocedural sparse conditional constant
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// propagation and merging.
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//
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// Specifically, this:
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// * Assumes values are constant unless proven otherwise
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// * Assumes BasicBlocks are dead unless proven otherwise
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// * Proves values to be constant, and replaces them with constants
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// * Proves conditional branches to be unconditional
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_IPO_SCCP_H
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#define LLVM_TRANSFORMS_IPO_SCCP_H
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class Module;
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/// A set of parameters to control various transforms performed by IPSCCP pass.
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/// Each of the boolean parameters can be set to:
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/// true - enabling the transformation.
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/// false - disabling the transformation.
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/// Intended use is to create a default object, modify parameters with
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/// additional setters and then pass it to IPSCCP.
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struct IPSCCPOptions {
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bool AllowFuncSpec;
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IPSCCPOptions(bool AllowFuncSpec = true) : AllowFuncSpec(AllowFuncSpec) {}
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/// Enables or disables Specialization of Functions.
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IPSCCPOptions &setFuncSpec(bool FuncSpec) {
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AllowFuncSpec = FuncSpec;
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return *this;
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}
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};
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/// Pass to perform interprocedural constant propagation.
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class IPSCCPPass : public PassInfoMixin<IPSCCPPass> {
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IPSCCPOptions Options;
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public:
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IPSCCPPass() = default;
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IPSCCPPass(IPSCCPOptions Options) : Options(Options) {}
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PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
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bool isFuncSpecEnabled() const { return Options.AllowFuncSpec; }
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};
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} // end namespace llvm
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#endif // LLVM_TRANSFORMS_IPO_SCCP_H
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