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//===- CoroInternal.h - Internal Coroutine interfaces ---------*- C++ -*---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// Common definitions/declarations used internally by coroutine lowering passes.
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TRANSFORMS_COROUTINES_COROINTERNAL_H
#define LLVM_LIB_TRANSFORMS_COROUTINES_COROINTERNAL_H
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/Transforms/Coroutines/CoroInstr.h"
#include "llvm/Transforms/Coroutines/CoroShape.h"
namespace llvm {
class CallGraph;
namespace coro {
bool isSuspendBlock(BasicBlock *BB);
bool declaresAnyIntrinsic(const Module &M);
bool declaresIntrinsics(const Module &M, ArrayRef<Intrinsic::ID> List);
void replaceCoroFree(CoroIdInst *CoroId, bool Elide);
/// Replaces all @llvm.coro.alloc intrinsics calls associated with a given
/// call @llvm.coro.id instruction with boolean value false.
void suppressCoroAllocs(CoroIdInst *CoroId);
/// Replaces CoroAllocs with boolean value false.
void suppressCoroAllocs(LLVMContext &Context,
ArrayRef<CoroAllocInst *> CoroAllocs);
/// Attempts to rewrite the location operand of debug intrinsics in terms of
/// the coroutine frame pointer, folding pointer offsets into the DIExpression
/// of the intrinsic.
/// If the frame pointer is an Argument, store it into an alloca to enhance the
/// debugability.
void salvageDebugInfo(
SmallDenseMap<Argument *, AllocaInst *, 4> &ArgToAllocaMap,
DbgVariableIntrinsic &DVI, bool IsEntryPoint);
void salvageDebugInfo(
SmallDenseMap<Argument *, AllocaInst *, 4> &ArgToAllocaMap,
DbgVariableRecord &DVR, bool UseEntryValue);
// Keeps data and helper functions for lowering coroutine intrinsics.
struct LowererBase {
Module &TheModule;
LLVMContext &Context;
PointerType *const Int8Ptr;
FunctionType *const ResumeFnType;
ConstantPointerNull *const NullPtr;
LowererBase(Module &M);
CallInst *makeSubFnCall(Value *Arg, int Index, Instruction *InsertPt);
};
bool defaultMaterializable(Instruction &V);
void normalizeCoroutine(Function &F, coro::Shape &Shape,
TargetTransformInfo &TTI);
CallInst *createMustTailCall(DebugLoc Loc, Function *MustTailCallFn,
TargetTransformInfo &TTI,
ArrayRef<Value *> Arguments, IRBuilder<> &);
} // End namespace coro.
} // End namespace llvm
#endif
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