================ @@ -0,0 +1,136 @@ +//===- CoroSplit.cpp - Converts a coroutine into a state machine ----------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +//===----------------------------------------------------------------------===// + +#include "llvm/Transforms/Coroutines/CoroAnnotationElide.h" + +#include "llvm/Analysis/LazyCallGraph.h" +#include "llvm/Analysis/OptimizationRemarkEmitter.h" +#include "llvm/IR/Analysis.h" +#include "llvm/IR/IRBuilder.h" +#include "llvm/IR/InstIterator.h" +#include "llvm/IR/Instruction.h" +#include "llvm/IR/Module.h" +#include "llvm/IR/PassManager.h" +#include "llvm/Transforms/Utils/CallGraphUpdater.h" + +#include <cassert> + +using namespace llvm; + +#define DEBUG_TYPE "coro-annotation-elide" + +#define CORO_MUST_ELIDE_ANNOTATION "coro_must_elide" + +static Instruction *getFirstNonAllocaInTheEntryBlock(Function *F) { + for (Instruction &I : F->getEntryBlock()) + if (!isa<AllocaInst>(&I)) + return &I; + llvm_unreachable("no terminator in the entry block"); +} + +static Value *allocateFrameInCaller(Function *Caller, uint64_t FrameSize, + Align FrameAlign) { + LLVMContext &C = Caller->getContext(); + BasicBlock::iterator InsertPt = + getFirstNonAllocaInTheEntryBlock(Caller)->getIterator(); + const DataLayout &DL = Caller->getDataLayout(); + auto FrameTy = ArrayType::get(Type::getInt8Ty(C), FrameSize); + auto *Frame = new AllocaInst(FrameTy, DL.getAllocaAddrSpace(), "", InsertPt); + Frame->setAlignment(FrameAlign); + return new BitCastInst(Frame, PointerType::getUnqual(C), "vFrame", InsertPt); +} + +static void processCall(CallBase *CB, Function *Caller, Function *NewCallee, ---------------- ChuanqiXu9 wrote:
We really comments for the function we can't understand it by its name. https://github.com/llvm/llvm-project/pull/99285 _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
