39 lines · cpp
1//===- SimplifyInstructions.cpp - Specialized Delta Pass ------------------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements a function which calls the Generic Delta pass in order10// to simplify Instructions in defined functions.11//12//===----------------------------------------------------------------------===//13 14#include "SimplifyInstructions.h"15#include "llvm/Analysis/InstructionSimplify.h"16 17using namespace llvm;18 19/// Calls simplifyInstruction in each instruction in functions, and replaces20/// their values.21void llvm::simplifyInstructionsDeltaPass(Oracle &O, ReducerWorkItem &WorkItem) {22 Module &Program = WorkItem.getModule();23 const DataLayout &DL = Program.getDataLayout();24 25 for (auto &F : Program) {26 for (auto &BB : F) {27 for (auto &Inst : make_early_inc_range(BB)) {28 SimplifyQuery Q(DL, &Inst);29 if (Value *Simplified = simplifyInstruction(&Inst, Q)) {30 if (O.shouldKeep())31 continue;32 Inst.replaceAllUsesWith(Simplified);33 Inst.eraseFromParent();34 }35 }36 }37 }38}39