1 //===- Scalarizer.h --- Scalarize vector operations -----------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 /// \file 10 /// This pass converts vector operations into scalar operations (or, optionally, 11 /// operations on smaller vector widths), in order to expose optimization 12 /// opportunities on the individual scalar operations. 13 /// It is mainly intended for targets that do not have vector units, but it 14 /// may also be useful for revectorizing code to different vector widths. 15 // 16 //===----------------------------------------------------------------------===// 17 18 #ifndef LLVM_TRANSFORMS_SCALAR_SCALARIZER_H 19 #define LLVM_TRANSFORMS_SCALAR_SCALARIZER_H 20 21 #include "llvm/IR/PassManager.h" 22 #include <optional> 23 24 namespace llvm { 25 26 class Function; 27 class FunctionPass; 28 29 struct ScalarizerPassOptions { 30 // These options correspond 1:1 to cl::opt options defined in 31 // Scalarizer.cpp. When the cl::opt are specified, they take precedence. 32 // When the cl::opt are not specified, the present optional values allow to 33 // override the cl::opt's default values. 34 std::optional<bool> ScalarizeVariableInsertExtract; 35 std::optional<bool> ScalarizeLoadStore; 36 std::optional<unsigned> ScalarizeMinBits; 37 }; 38 39 class ScalarizerPass : public PassInfoMixin<ScalarizerPass> { 40 ScalarizerPassOptions Options; 41 42 public: 43 ScalarizerPass() = default; 44 ScalarizerPass(const ScalarizerPassOptions &Options) : Options(Options) {} 45 46 PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); 47 48 void setScalarizeVariableInsertExtract(bool Value) { 49 Options.ScalarizeVariableInsertExtract = Value; 50 } 51 void setScalarizeLoadStore(bool Value) { Options.ScalarizeLoadStore = Value; } 52 void setScalarizeMinBits(unsigned Value) { Options.ScalarizeMinBits = Value; } 53 }; 54 55 /// Create a legacy pass manager instance of the Scalarizer pass 56 FunctionPass *createScalarizerPass(); 57 58 } 59 60 #endif /* LLVM_TRANSFORMS_SCALAR_SCALARIZER_H */ 61