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      1 //===-- Coroutines.h - Coroutine Transformations ----------------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 // Declare accessor functions for coroutine lowering passes.
     10 //===----------------------------------------------------------------------===//
     11 
     12 #ifndef LLVM_TRANSFORMS_COROUTINES_H
     13 #define LLVM_TRANSFORMS_COROUTINES_H
     14 
     15 namespace llvm {
     16 
     17 class Pass;
     18 class PassManagerBuilder;
     19 
     20 /// Add all coroutine passes to appropriate extension points.
     21 void addCoroutinePassesToExtensionPoints(PassManagerBuilder &Builder);
     22 
     23 /// Lower coroutine intrinsics that are not needed by later passes.
     24 Pass *createCoroEarlyPass();
     25 
     26 /// Split up coroutines into multiple functions driving their state machines.
     27 Pass *createCoroSplitPass();
     28 
     29 /// Analyze coroutines use sites, devirtualize resume/destroy calls and elide
     30 /// heap allocation for coroutine frame where possible.
     31 Pass *createCoroElidePass();
     32 
     33 /// Lower all remaining coroutine intrinsics.
     34 Pass *createCoroCleanupPass();
     35 
     36 }
     37 
     38 #endif
     39