include/llvm/Transforms/Scalar/LowerConstantIntrinsics.h

   1 //===- LowerConstantIntrinsics.h - Lower constant int. pass -*- C++ -*-========//
   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 /// \file
   9 ///
  10 /// The header file for the LowerConstantIntrinsics pass as used by the new pass
  11 /// manager.
  12 ///
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_TRANSFORMS_SCALAR_LOWERCONSTANTINTRINSICS_H
  16 #define LLVM_TRANSFORMS_SCALAR_LOWERCONSTANTINTRINSICS_H
  17
  18 #include "llvm/IR/Function.h"
  19 #include "llvm/IR/PassManager.h"
  20
  21 namespace llvm {
  22
  23 struct LowerConstantIntrinsicsPass :
  24     PassInfoMixin<LowerConstantIntrinsicsPass> {
  25 public:
  26   explicit LowerConstantIntrinsicsPass() {}
  27
  28   /// Run the pass over the function.
  29   ///
  30   /// This will lower all remaining 'objectsize' and 'is.constant'`
  31   /// intrinsic calls in this function, even when the argument has no known
  32   /// size or is not a constant respectively. The resulting constant is
  33   /// propagated and conditional branches are resolved where possible.
  34   /// This complements the Instruction Simplification and
  35   /// Instruction Combination passes of the optimized pass chain.
  36   PreservedAnalyses run(Function &F, FunctionAnalysisManager &);
  37 };
  38
  39 }
  40
  41 #endif