Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/lib/Target/AMDGPU/AMDGPULowerIntrinsics.cpp

@@ -1,170 +0,0 @@
-//===-- AMDGPULowerIntrinsics.cpp -----------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "AMDGPU.h"
-#include "AMDGPUSubtarget.h"
-#include "llvm/CodeGen/TargetPassConfig.h"
-#include "llvm/Analysis/TargetTransformInfo.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/IntrinsicInst.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Transforms/Utils/LowerMemIntrinsics.h"
-
-#define DEBUG_TYPE "amdgpu-lower-intrinsics"
-
-using namespace llvm;
-
-namespace {
-
-const unsigned MaxStaticSize = 1024;
-
-class AMDGPULowerIntrinsics : public ModulePass {
-private:
-  bool makeLIDRangeMetadata(Function &F) const;
-
-public:
-  static char ID;
-
-  AMDGPULowerIntrinsics() : ModulePass(ID) {}
-
-  bool runOnModule(Module &M) override;
-  bool expandMemIntrinsicUses(Function &F);
-  StringRef getPassName() const override {
-    return "AMDGPU Lower Intrinsics";
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<TargetTransformInfoWrapperPass>();
-  }
-};
-
-}
-
-char AMDGPULowerIntrinsics::ID = 0;
-
-char &llvm::AMDGPULowerIntrinsicsID = AMDGPULowerIntrinsics::ID;
-
-INITIALIZE_PASS(AMDGPULowerIntrinsics, DEBUG_TYPE, "Lower intrinsics", false,
-                false)
-
-// TODO: Should refine based on estimated number of accesses (e.g. does it
-// require splitting based on alignment)
-static bool shouldExpandOperationWithSize(Value *Size) {
-  ConstantInt *CI = dyn_cast<ConstantInt>(Size);
-  return !CI || (CI->getZExtValue() > MaxStaticSize);
-}
-
-bool AMDGPULowerIntrinsics::expandMemIntrinsicUses(Function &F) {
-  Intrinsic::ID ID = F.getIntrinsicID();
-  bool Changed = false;
-
-  for (auto I = F.user_begin(), E = F.user_end(); I != E;) {
-    Instruction *Inst = cast<Instruction>(*I);
-    ++I;
-
-    switch (ID) {
-    case Intrinsic::memcpy: {
-      auto *Memcpy = cast<MemCpyInst>(Inst);
-      if (shouldExpandOperationWithSize(Memcpy->getLength())) {
-        Function *ParentFunc = Memcpy->getParent()->getParent();
-        const TargetTransformInfo &TTI =
-            getAnalysis<TargetTransformInfoWrapperPass>().getTTI(*ParentFunc);
-        expandMemCpyAsLoop(Memcpy, TTI);
-        Changed = true;
-        Memcpy->eraseFromParent();
-      }
-
-      break;
-    }
-    case Intrinsic::memmove: {
-      auto *Memmove = cast<MemMoveInst>(Inst);
-      if (shouldExpandOperationWithSize(Memmove->getLength())) {
-        expandMemMoveAsLoop(Memmove);
-        Changed = true;
-        Memmove->eraseFromParent();
-      }
-
-      break;
-    }
-    case Intrinsic::memset: {
-      auto *Memset = cast<MemSetInst>(Inst);
-      if (shouldExpandOperationWithSize(Memset->getLength())) {
-        expandMemSetAsLoop(Memset);
-        Changed = true;
-        Memset->eraseFromParent();
-      }
-
-      break;
-    }
-    default:
-      break;
-    }
-  }
-
-  return Changed;
-}
-
-bool AMDGPULowerIntrinsics::makeLIDRangeMetadata(Function &F) const {
-  auto *TPC = getAnalysisIfAvailable<TargetPassConfig>();
-  if (!TPC)
-    return false;
-
-  const TargetMachine &TM = TPC->getTM<TargetMachine>();
-  const AMDGPUSubtarget &ST = TM.getSubtarget<AMDGPUSubtarget>(F);
-  bool Changed = false;
-
-  for (auto *U : F.users()) {
-    auto *CI = dyn_cast<CallInst>(U);
-    if (!CI)
-      continue;
-
-    Changed |= ST.makeLIDRangeMetadata(CI);
-  }
-  return Changed;
-}
-
-bool AMDGPULowerIntrinsics::runOnModule(Module &M) {
-  bool Changed = false;
-
-  for (Function &F : M) {
-    if (!F.isDeclaration())
-      continue;
-
-    switch (F.getIntrinsicID()) {
-    case Intrinsic::memcpy:
-    case Intrinsic::memmove:
-    case Intrinsic::memset:
-      if (expandMemIntrinsicUses(F))
-        Changed = true;
-      break;
-
-    case Intrinsic::amdgcn_workitem_id_x:
-    case Intrinsic::r600_read_tidig_x:
-    case Intrinsic::amdgcn_workitem_id_y:
-    case Intrinsic::r600_read_tidig_y:
-    case Intrinsic::amdgcn_workitem_id_z:
-    case Intrinsic::r600_read_tidig_z:
-    case Intrinsic::r600_read_local_size_x:
-    case Intrinsic::r600_read_local_size_y:
-    case Intrinsic::r600_read_local_size_z:
-      Changed |= makeLIDRangeMetadata(F);
-      break;
-
-    default:
-      break;
-    }
-  }
-
-  return Changed;
-}
-
-ModulePass *llvm::createAMDGPULowerIntrinsicsPass() {
-  return new AMDGPULowerIntrinsics();
-}