[clang] Rename files that MacOS libtool warns about (NFC)users/jthackray/rename-files

As mentioned in https://discourse.llvm.org/t/rfc-rename-source-files-in-clang-lib-codegen-targetbuiltins/87462/
it appears that MacOS's libtool warns about source filenames that
are identically named, even if they exist in separate directories.

Sadly, there doesn't appear to be an easy way to disable this warning,
so rename these files, as these warnings are annoying for MacOS users.

Fixes #133199.

1 files changed, 436 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/TargetBuiltins/BuiltinRISCV.cpp b/clang/lib/CodeGen/TargetBuiltins/BuiltinRISCV.cpp
new file mode 100644
index 0000000..a6f49e9
--- /dev/null
+++ b/clang/lib/CodeGen/TargetBuiltins/BuiltinRISCV.cpp
@@ -0,0 +1,436 @@
+//===-------- BuiltinRISCV.cpp - Emit LLVM Code for builtins --------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This contains code to emit Builtin calls as LLVM code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CodeGenFunction.h"
+#include "clang/Basic/TargetBuiltins.h"
+#include "llvm/IR/IntrinsicsRISCV.h"
+#include "llvm/TargetParser/RISCVISAInfo.h"
+#include "llvm/TargetParser/RISCVTargetParser.h"
+
+using namespace clang;
+using namespace CodeGen;
+using namespace llvm;
+
+Value *CodeGenFunction::EmitRISCVCpuInit() {
+  llvm::FunctionType *FTy = llvm::FunctionType::get(VoidTy, {VoidPtrTy}, false);
+  llvm::FunctionCallee Func =
+      CGM.CreateRuntimeFunction(FTy, "__init_riscv_feature_bits");
+  auto *CalleeGV = cast<llvm::GlobalValue>(Func.getCallee());
+  CalleeGV->setDSOLocal(true);
+  CalleeGV->setDLLStorageClass(llvm::GlobalValue::DefaultStorageClass);
+  return Builder.CreateCall(Func, {llvm::ConstantPointerNull::get(VoidPtrTy)});
+}
+
+Value *CodeGenFunction::EmitRISCVCpuSupports(const CallExpr *E) {
+
+  const Expr *FeatureExpr = E->getArg(0)->IgnoreParenCasts();
+  StringRef FeatureStr = cast<StringLiteral>(FeatureExpr)->getString();
+  if (!getContext().getTargetInfo().validateCpuSupports(FeatureStr))
+    return Builder.getFalse();
+
+  return EmitRISCVCpuSupports(ArrayRef<StringRef>(FeatureStr));
+}
+
+static Value *loadRISCVFeatureBits(unsigned Index, CGBuilderTy &Builder,
+                                   CodeGenModule &CGM) {
+  llvm::Type *Int32Ty = Builder.getInt32Ty();
+  llvm::Type *Int64Ty = Builder.getInt64Ty();
+  llvm::ArrayType *ArrayOfInt64Ty =
+      llvm::ArrayType::get(Int64Ty, llvm::RISCVISAInfo::FeatureBitSize);
+  llvm::Type *StructTy = llvm::StructType::get(Int32Ty, ArrayOfInt64Ty);
+  llvm::Constant *RISCVFeaturesBits =
+      CGM.CreateRuntimeVariable(StructTy, "__riscv_feature_bits");
+  cast<llvm::GlobalValue>(RISCVFeaturesBits)->setDSOLocal(true);
+  Value *IndexVal = llvm::ConstantInt::get(Int32Ty, Index);
+  llvm::Value *GEPIndices[] = {Builder.getInt32(0), Builder.getInt32(1),
+                               IndexVal};
+  Value *Ptr =
+      Builder.CreateInBoundsGEP(StructTy, RISCVFeaturesBits, GEPIndices);
+  Value *FeaturesBit =
+      Builder.CreateAlignedLoad(Int64Ty, Ptr, CharUnits::fromQuantity(8));
+  return FeaturesBit;
+}
+
+Value *CodeGenFunction::EmitRISCVCpuSupports(ArrayRef<StringRef> FeaturesStrs) {
+  const unsigned RISCVFeatureLength = llvm::RISCVISAInfo::FeatureBitSize;
+  uint64_t RequireBitMasks[RISCVFeatureLength] = {0};
+
+  for (auto Feat : FeaturesStrs) {
+    auto [GroupID, BitPos] = RISCVISAInfo::getRISCVFeaturesBitsInfo(Feat);
+
+    // If there isn't BitPos for this feature, skip this version.
+    // It also report the warning to user during compilation.
+    if (BitPos == -1)
+      return Builder.getFalse();
+
+    RequireBitMasks[GroupID] |= (1ULL << BitPos);
+  }
+
+  Value *Result = nullptr;
+  for (unsigned Idx = 0; Idx < RISCVFeatureLength; Idx++) {
+    if (RequireBitMasks[Idx] == 0)
+      continue;
+
+    Value *Mask = Builder.getInt64(RequireBitMasks[Idx]);
+    Value *Bitset =
+        Builder.CreateAnd(loadRISCVFeatureBits(Idx, Builder, CGM), Mask);
+    Value *CmpV = Builder.CreateICmpEQ(Bitset, Mask);
+    Result = (!Result) ? CmpV : Builder.CreateAnd(Result, CmpV);
+  }
+
+  assert(Result && "Should have value here.");
+
+  return Result;
+}
+
+Value *CodeGenFunction::EmitRISCVCpuIs(const CallExpr *E) {
+  const Expr *CPUExpr = E->getArg(0)->IgnoreParenCasts();
+  StringRef CPUStr = cast<clang::StringLiteral>(CPUExpr)->getString();
+  return EmitRISCVCpuIs(CPUStr);
+}
+
+Value *CodeGenFunction::EmitRISCVCpuIs(StringRef CPUStr) {
+  llvm::Type *Int32Ty = Builder.getInt32Ty();
+  llvm::Type *Int64Ty = Builder.getInt64Ty();
+  llvm::StructType *StructTy = llvm::StructType::get(Int32Ty, Int64Ty, Int64Ty);
+  llvm::Constant *RISCVCPUModel =
+      CGM.CreateRuntimeVariable(StructTy, "__riscv_cpu_model");
+  cast<llvm::GlobalValue>(RISCVCPUModel)->setDSOLocal(true);
+
+  auto loadRISCVCPUID = [&](unsigned Index) {
+    Value *Ptr = Builder.CreateStructGEP(StructTy, RISCVCPUModel, Index);
+    Value *CPUID = Builder.CreateAlignedLoad(StructTy->getTypeAtIndex(Index),
+                                             Ptr, llvm::MaybeAlign());
+    return CPUID;
+  };
+
+  const llvm::RISCV::CPUModel Model = llvm::RISCV::getCPUModel(CPUStr);
+
+  // Compare mvendorid.
+  Value *VendorID = loadRISCVCPUID(0);
+  Value *Result =
+      Builder.CreateICmpEQ(VendorID, Builder.getInt32(Model.MVendorID));
+
+  // Compare marchid.
+  Value *ArchID = loadRISCVCPUID(1);
+  Result = Builder.CreateAnd(
+      Result, Builder.CreateICmpEQ(ArchID, Builder.getInt64(Model.MArchID)));
+
+  // Compare mimpid.
+  Value *ImpID = loadRISCVCPUID(2);
+  Result = Builder.CreateAnd(
+      Result, Builder.CreateICmpEQ(ImpID, Builder.getInt64(Model.MImpID)));
+
+  return Result;
+}
+
+Value *CodeGenFunction::EmitRISCVBuiltinExpr(unsigned BuiltinID,
+                                             const CallExpr *E,
+                                             ReturnValueSlot ReturnValue) {
+
+  if (BuiltinID == Builtin::BI__builtin_cpu_supports)
+    return EmitRISCVCpuSupports(E);
+  if (BuiltinID == Builtin::BI__builtin_cpu_init)
+    return EmitRISCVCpuInit();
+  if (BuiltinID == Builtin::BI__builtin_cpu_is)
+    return EmitRISCVCpuIs(E);
+
+  SmallVector<Value *, 4> Ops;
+  llvm::Type *ResultType = ConvertType(E->getType());
+
+  // Find out if any arguments are required to be integer constant expressions.
+  unsigned ICEArguments = 0;
+  ASTContext::GetBuiltinTypeError Error;
+  getContext().GetBuiltinType(BuiltinID, Error, &ICEArguments);
+  if (Error == ASTContext::GE_Missing_type) {
+    // Vector intrinsics don't have a type string.
+    assert(BuiltinID >= clang::RISCV::FirstRVVBuiltin &&
+           BuiltinID <= clang::RISCV::LastRVVBuiltin);
+    ICEArguments = 0;
+    if (BuiltinID == RISCVVector::BI__builtin_rvv_vget_v ||
+        BuiltinID == RISCVVector::BI__builtin_rvv_vset_v)
+      ICEArguments = 1 << 1;
+  } else {
+    assert(Error == ASTContext::GE_None && "Unexpected error");
+  }
+
+  if (BuiltinID == RISCV::BI__builtin_riscv_ntl_load)
+    ICEArguments |= (1 << 1);
+  if (BuiltinID == RISCV::BI__builtin_riscv_ntl_store)
+    ICEArguments |= (1 << 2);
+
+  for (unsigned i = 0, e = E->getNumArgs(); i != e; i++) {
+    // Handle aggregate argument, namely RVV tuple types in segment load/store
+    if (hasAggregateEvaluationKind(E->getArg(i)->getType())) {
+      LValue L = EmitAggExprToLValue(E->getArg(i));
+      llvm::Value *AggValue = Builder.CreateLoad(L.getAddress());
+      Ops.push_back(AggValue);
+      continue;
+    }
+    Ops.push_back(EmitScalarOrConstFoldImmArg(ICEArguments, i, E));
+  }
+
+  Intrinsic::ID ID = Intrinsic::not_intrinsic;
+  // The 0th bit simulates the `vta` of RVV
+  // The 1st bit simulates the `vma` of RVV
+  constexpr unsigned RVV_VTA = 0x1;
+  constexpr unsigned RVV_VMA = 0x2;
+  int PolicyAttrs = 0;
+  bool IsMasked = false;
+  // This is used by segment load/store to determine it's llvm type.
+  unsigned SegInstSEW = 8;
+
+  // Required for overloaded intrinsics.
+  llvm::SmallVector<llvm::Type *, 2> IntrinsicTypes;
+  switch (BuiltinID) {
+  default: llvm_unreachable("unexpected builtin ID");
+  case RISCV::BI__builtin_riscv_orc_b_32:
+  case RISCV::BI__builtin_riscv_orc_b_64:
+  case RISCV::BI__builtin_riscv_clmul_32:
+  case RISCV::BI__builtin_riscv_clmul_64:
+  case RISCV::BI__builtin_riscv_clmulh_32:
+  case RISCV::BI__builtin_riscv_clmulh_64:
+  case RISCV::BI__builtin_riscv_clmulr_32:
+  case RISCV::BI__builtin_riscv_clmulr_64:
+  case RISCV::BI__builtin_riscv_xperm4_32:
+  case RISCV::BI__builtin_riscv_xperm4_64:
+  case RISCV::BI__builtin_riscv_xperm8_32:
+  case RISCV::BI__builtin_riscv_xperm8_64:
+  case RISCV::BI__builtin_riscv_brev8_32:
+  case RISCV::BI__builtin_riscv_brev8_64:
+  case RISCV::BI__builtin_riscv_zip_32:
+  case RISCV::BI__builtin_riscv_unzip_32: {
+    switch (BuiltinID) {
+    default: llvm_unreachable("unexpected builtin ID");
+    // Zbb
+    case RISCV::BI__builtin_riscv_orc_b_32:
+    case RISCV::BI__builtin_riscv_orc_b_64:
+      ID = Intrinsic::riscv_orc_b;
+      break;
+
+    // Zbc
+    case RISCV::BI__builtin_riscv_clmul_32:
+    case RISCV::BI__builtin_riscv_clmul_64:
+      ID = Intrinsic::riscv_clmul;
+      break;
+    case RISCV::BI__builtin_riscv_clmulh_32:
+    case RISCV::BI__builtin_riscv_clmulh_64:
+      ID = Intrinsic::riscv_clmulh;
+      break;
+    case RISCV::BI__builtin_riscv_clmulr_32:
+    case RISCV::BI__builtin_riscv_clmulr_64:
+      ID = Intrinsic::riscv_clmulr;
+      break;
+
+    // Zbkx
+    case RISCV::BI__builtin_riscv_xperm8_32:
+    case RISCV::BI__builtin_riscv_xperm8_64:
+      ID = Intrinsic::riscv_xperm8;
+      break;
+    case RISCV::BI__builtin_riscv_xperm4_32:
+    case RISCV::BI__builtin_riscv_xperm4_64:
+      ID = Intrinsic::riscv_xperm4;
+      break;
+
+    // Zbkb
+    case RISCV::BI__builtin_riscv_brev8_32:
+    case RISCV::BI__builtin_riscv_brev8_64:
+      ID = Intrinsic::riscv_brev8;
+      break;
+    case RISCV::BI__builtin_riscv_zip_32:
+      ID = Intrinsic::riscv_zip;
+      break;
+    case RISCV::BI__builtin_riscv_unzip_32:
+      ID = Intrinsic::riscv_unzip;
+      break;
+    }
+
+    IntrinsicTypes = {ResultType};
+    break;
+  }
+
+  // Zk builtins
+
+  // Zknh
+  case RISCV::BI__builtin_riscv_sha256sig0:
+    ID = Intrinsic::riscv_sha256sig0;
+    break;
+  case RISCV::BI__builtin_riscv_sha256sig1:
+    ID = Intrinsic::riscv_sha256sig1;
+    break;
+  case RISCV::BI__builtin_riscv_sha256sum0:
+    ID = Intrinsic::riscv_sha256sum0;
+    break;
+  case RISCV::BI__builtin_riscv_sha256sum1:
+    ID = Intrinsic::riscv_sha256sum1;
+    break;
+
+  // Zksed
+  case RISCV::BI__builtin_riscv_sm4ks:
+    ID = Intrinsic::riscv_sm4ks;
+    break;
+  case RISCV::BI__builtin_riscv_sm4ed:
+    ID = Intrinsic::riscv_sm4ed;
+    break;
+
+  // Zksh
+  case RISCV::BI__builtin_riscv_sm3p0:
+    ID = Intrinsic::riscv_sm3p0;
+    break;
+  case RISCV::BI__builtin_riscv_sm3p1:
+    ID = Intrinsic::riscv_sm3p1;
+    break;
+
+  case RISCV::BI__builtin_riscv_clz_32:
+  case RISCV::BI__builtin_riscv_clz_64: {
+    Function *F = CGM.getIntrinsic(Intrinsic::ctlz, Ops[0]->getType());
+    Value *Result = Builder.CreateCall(F, {Ops[0], Builder.getInt1(false)});
+    if (Result->getType() != ResultType)
+      Result =
+          Builder.CreateIntCast(Result, ResultType, /*isSigned*/ false, "cast");
+    return Result;
+  }
+  case RISCV::BI__builtin_riscv_ctz_32:
+  case RISCV::BI__builtin_riscv_ctz_64: {
+    Function *F = CGM.getIntrinsic(Intrinsic::cttz, Ops[0]->getType());
+    Value *Result = Builder.CreateCall(F, {Ops[0], Builder.getInt1(false)});
+    if (Result->getType() != ResultType)
+      Result =
+          Builder.CreateIntCast(Result, ResultType, /*isSigned*/ false, "cast");
+    return Result;
+  }
+
+  // Zihintntl
+  case RISCV::BI__builtin_riscv_ntl_load: {
+    llvm::Type *ResTy = ConvertType(E->getType());
+    unsigned DomainVal = 5; // Default __RISCV_NTLH_ALL
+    if (Ops.size() == 2)
+      DomainVal = cast<ConstantInt>(Ops[1])->getZExtValue();
+
+    llvm::MDNode *RISCVDomainNode = llvm::MDNode::get(
+        getLLVMContext(),
+        llvm::ConstantAsMetadata::get(Builder.getInt32(DomainVal)));
+    llvm::MDNode *NontemporalNode = llvm::MDNode::get(
+        getLLVMContext(), llvm::ConstantAsMetadata::get(Builder.getInt32(1)));
+
+    int Width;
+    if(ResTy->isScalableTy()) {
+      const ScalableVectorType *SVTy = cast<ScalableVectorType>(ResTy);
+      llvm::Type *ScalarTy = ResTy->getScalarType();
+      Width = ScalarTy->getPrimitiveSizeInBits() *
+              SVTy->getElementCount().getKnownMinValue();
+    } else
+      Width = ResTy->getPrimitiveSizeInBits();
+    LoadInst *Load = Builder.CreateLoad(
+        Address(Ops[0], ResTy, CharUnits::fromQuantity(Width / 8)));
+
+    Load->setMetadata(llvm::LLVMContext::MD_nontemporal, NontemporalNode);
+    Load->setMetadata(CGM.getModule().getMDKindID("riscv-nontemporal-domain"),
+                      RISCVDomainNode);
+
+    return Load;
+  }
+  case RISCV::BI__builtin_riscv_ntl_store: {
+    unsigned DomainVal = 5; // Default __RISCV_NTLH_ALL
+    if (Ops.size() == 3)
+      DomainVal = cast<ConstantInt>(Ops[2])->getZExtValue();
+
+    llvm::MDNode *RISCVDomainNode = llvm::MDNode::get(
+        getLLVMContext(),
+        llvm::ConstantAsMetadata::get(Builder.getInt32(DomainVal)));
+    llvm::MDNode *NontemporalNode = llvm::MDNode::get(
+        getLLVMContext(), llvm::ConstantAsMetadata::get(Builder.getInt32(1)));
+
+    StoreInst *Store = Builder.CreateDefaultAlignedStore(Ops[1], Ops[0]);
+    Store->setMetadata(llvm::LLVMContext::MD_nontemporal, NontemporalNode);
+    Store->setMetadata(CGM.getModule().getMDKindID("riscv-nontemporal-domain"),
+                       RISCVDomainNode);
+
+    return Store;
+  }
+  // Zihintpause
+  case RISCV::BI__builtin_riscv_pause: {
+    llvm::Function *Fn = CGM.getIntrinsic(llvm::Intrinsic::riscv_pause);
+    return Builder.CreateCall(Fn, {});
+  }
+
+  // XCValu
+  case RISCV::BI__builtin_riscv_cv_alu_addN:
+    ID = Intrinsic::riscv_cv_alu_addN;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_addRN:
+    ID = Intrinsic::riscv_cv_alu_addRN;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_adduN:
+    ID = Intrinsic::riscv_cv_alu_adduN;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_adduRN:
+    ID = Intrinsic::riscv_cv_alu_adduRN;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_clip:
+    ID = Intrinsic::riscv_cv_alu_clip;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_clipu:
+    ID = Intrinsic::riscv_cv_alu_clipu;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_extbs:
+    return Builder.CreateSExt(Builder.CreateTrunc(Ops[0], Int8Ty), Int32Ty,
+                              "extbs");
+  case RISCV::BI__builtin_riscv_cv_alu_extbz:
+    return Builder.CreateZExt(Builder.CreateTrunc(Ops[0], Int8Ty), Int32Ty,
+                              "extbz");
+  case RISCV::BI__builtin_riscv_cv_alu_exths:
+    return Builder.CreateSExt(Builder.CreateTrunc(Ops[0], Int16Ty), Int32Ty,
+                              "exths");
+  case RISCV::BI__builtin_riscv_cv_alu_exthz:
+    return Builder.CreateZExt(Builder.CreateTrunc(Ops[0], Int16Ty), Int32Ty,
+                              "exthz");
+  case RISCV::BI__builtin_riscv_cv_alu_sle:
+    return Builder.CreateZExt(Builder.CreateICmpSLE(Ops[0], Ops[1]), Int32Ty,
+                              "sle");
+  case RISCV::BI__builtin_riscv_cv_alu_sleu:
+    return Builder.CreateZExt(Builder.CreateICmpULE(Ops[0], Ops[1]), Int32Ty,
+                              "sleu");
+  case RISCV::BI__builtin_riscv_cv_alu_subN:
+    ID = Intrinsic::riscv_cv_alu_subN;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_subRN:
+    ID = Intrinsic::riscv_cv_alu_subRN;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_subuN:
+    ID = Intrinsic::riscv_cv_alu_subuN;
+    break;
+  case RISCV::BI__builtin_riscv_cv_alu_subuRN:
+    ID = Intrinsic::riscv_cv_alu_subuRN;
+    break;
+
+  // XAndesBFHCvt
+  case RISCV::BI__builtin_riscv_nds_fcvt_s_bf16:
+    return Builder.CreateFPExt(Ops[0], FloatTy);
+  case RISCV::BI__builtin_riscv_nds_fcvt_bf16_s:
+    return Builder.CreateFPTrunc(Ops[0], BFloatTy);
+
+    // Vector builtins are handled from here.
+#include "clang/Basic/riscv_vector_builtin_cg.inc"
+
+    // SiFive Vector builtins are handled from here.
+#include "clang/Basic/riscv_sifive_vector_builtin_cg.inc"
+
+    // Andes Vector builtins are handled from here.
+#include "clang/Basic/riscv_andes_vector_builtin_cg.inc"
+  }
+
+  assert(ID != Intrinsic::not_intrinsic);
+
+  llvm::Function *F = CGM.getIntrinsic(ID, IntrinsicTypes);
+  return Builder.CreateCall(F, Ops, "");
+}