1 files changed, 0 insertions, 509 deletions

diff --git a/contrib/llvm/lib/CodeGen/IntrinsicLowering.cpp b/contrib/llvm/lib/CodeGen/IntrinsicLowering.cpp
deleted file mode 100644
index 8cbd8bcaeabb..000000000000
--- a/contrib/llvm/lib/CodeGen/IntrinsicLowering.cpp
+++ /dev/null
@@ -1,509 +0,0 @@
-//===-- IntrinsicLowering.cpp - Intrinsic Lowering default implementation -===//
-//
-// 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 file implements the IntrinsicLowering class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/CodeGen/IntrinsicLowering.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/IR/CallSite.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/Type.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-/// This function is used when we want to lower an intrinsic call to a call of
-/// an external function. This handles hard cases such as when there was already
-/// a prototype for the external function, but that prototype doesn't match the
-/// arguments we expect to pass in.
-template <class ArgIt>
-static CallInst *ReplaceCallWith(const char *NewFn, CallInst *CI,
-                                 ArgIt ArgBegin, ArgIt ArgEnd,
-                                 Type *RetTy) {
-  // If we haven't already looked up this function, check to see if the
-  // program already contains a function with this name.
-  Module *M = CI->getModule();
-  // Get or insert the definition now.
-  std::vector<Type *> ParamTys;
-  for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
-    ParamTys.push_back((*I)->getType());
-  FunctionCallee FCache =
-      M->getOrInsertFunction(NewFn, FunctionType::get(RetTy, ParamTys, false));
-
-  IRBuilder<> Builder(CI->getParent(), CI->getIterator());
-  SmallVector<Value *, 8> Args(ArgBegin, ArgEnd);
-  CallInst *NewCI = Builder.CreateCall(FCache, Args);
-  NewCI->setName(CI->getName());
-  if (!CI->use_empty())
-    CI->replaceAllUsesWith(NewCI);
-  return NewCI;
-}
-
-// VisualStudio defines setjmp as _setjmp
-#if defined(_MSC_VER) && defined(setjmp) && \
-                         !defined(setjmp_undefined_for_msvc)
-#  pragma push_macro("setjmp")
-#  undef setjmp
-#  define setjmp_undefined_for_msvc
-#endif
-
-/// Emit the code to lower bswap of V before the specified instruction IP.
-static Value *LowerBSWAP(LLVMContext &Context, Value *V, Instruction *IP) {
-  assert(V->getType()->isIntOrIntVectorTy() && "Can't bswap a non-integer type!");
-
-  unsigned BitSize = V->getType()->getScalarSizeInBits();
-
-  IRBuilder<> Builder(IP);
-
-  switch(BitSize) {
-  default: llvm_unreachable("Unhandled type size of value to byteswap!");
-  case 16: {
-    Value *Tmp1 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 8),
-                                    "bswap.2");
-    Value *Tmp2 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
-                                     "bswap.1");
-    V = Builder.CreateOr(Tmp1, Tmp2, "bswap.i16");
-    break;
-  }
-  case 32: {
-    Value *Tmp4 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 24),
-                                    "bswap.4");
-    Value *Tmp3 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 8),
-                                    "bswap.3");
-    Value *Tmp2 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
-                                     "bswap.2");
-    Value *Tmp1 = Builder.CreateLShr(V,ConstantInt::get(V->getType(), 24),
-                                     "bswap.1");
-    Tmp3 = Builder.CreateAnd(Tmp3,
-                         ConstantInt::get(V->getType(), 0xFF0000),
-                             "bswap.and3");
-    Tmp2 = Builder.CreateAnd(Tmp2,
-                           ConstantInt::get(V->getType(), 0xFF00),
-                             "bswap.and2");
-    Tmp4 = Builder.CreateOr(Tmp4, Tmp3, "bswap.or1");
-    Tmp2 = Builder.CreateOr(Tmp2, Tmp1, "bswap.or2");
-    V = Builder.CreateOr(Tmp4, Tmp2, "bswap.i32");
-    break;
-  }
-  case 64: {
-    Value *Tmp8 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 56),
-                                    "bswap.8");
-    Value *Tmp7 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 40),
-                                    "bswap.7");
-    Value *Tmp6 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 24),
-                                    "bswap.6");
-    Value *Tmp5 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 8),
-                                    "bswap.5");
-    Value* Tmp4 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
-                                     "bswap.4");
-    Value* Tmp3 = Builder.CreateLShr(V,
-                                     ConstantInt::get(V->getType(), 24),
-                                     "bswap.3");
-    Value* Tmp2 = Builder.CreateLShr(V,
-                                     ConstantInt::get(V->getType(), 40),
-                                     "bswap.2");
-    Value* Tmp1 = Builder.CreateLShr(V,
-                                     ConstantInt::get(V->getType(), 56),
-                                     "bswap.1");
-    Tmp7 = Builder.CreateAnd(Tmp7,
-                             ConstantInt::get(V->getType(),
-                                              0xFF000000000000ULL),
-                             "bswap.and7");
-    Tmp6 = Builder.CreateAnd(Tmp6,
-                             ConstantInt::get(V->getType(),
-                                              0xFF0000000000ULL),
-                             "bswap.and6");
-    Tmp5 = Builder.CreateAnd(Tmp5,
-                        ConstantInt::get(V->getType(),
-                             0xFF00000000ULL),
-                             "bswap.and5");
-    Tmp4 = Builder.CreateAnd(Tmp4,
-                        ConstantInt::get(V->getType(),
-                             0xFF000000ULL),
-                             "bswap.and4");
-    Tmp3 = Builder.CreateAnd(Tmp3,
-                             ConstantInt::get(V->getType(),
-                             0xFF0000ULL),
-                             "bswap.and3");
-    Tmp2 = Builder.CreateAnd(Tmp2,
-                             ConstantInt::get(V->getType(),
-                             0xFF00ULL),
-                             "bswap.and2");
-    Tmp8 = Builder.CreateOr(Tmp8, Tmp7, "bswap.or1");
-    Tmp6 = Builder.CreateOr(Tmp6, Tmp5, "bswap.or2");
-    Tmp4 = Builder.CreateOr(Tmp4, Tmp3, "bswap.or3");
-    Tmp2 = Builder.CreateOr(Tmp2, Tmp1, "bswap.or4");
-    Tmp8 = Builder.CreateOr(Tmp8, Tmp6, "bswap.or5");
-    Tmp4 = Builder.CreateOr(Tmp4, Tmp2, "bswap.or6");
-    V = Builder.CreateOr(Tmp8, Tmp4, "bswap.i64");
-    break;
-  }
-  }
-  return V;
-}
-
-/// Emit the code to lower ctpop of V before the specified instruction IP.
-static Value *LowerCTPOP(LLVMContext &Context, Value *V, Instruction *IP) {
-  assert(V->getType()->isIntegerTy() && "Can't ctpop a non-integer type!");
-
-  static const uint64_t MaskValues[6] = {
-    0x5555555555555555ULL, 0x3333333333333333ULL,
-    0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL,
-    0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL
-  };
-
-  IRBuilder<> Builder(IP);
-
-  unsigned BitSize = V->getType()->getPrimitiveSizeInBits();
-  unsigned WordSize = (BitSize + 63) / 64;
-  Value *Count = ConstantInt::get(V->getType(), 0);
-
-  for (unsigned n = 0; n < WordSize; ++n) {
-    Value *PartValue = V;
-    for (unsigned i = 1, ct = 0; i < (BitSize>64 ? 64 : BitSize);
-         i <<= 1, ++ct) {
-      Value *MaskCst = ConstantInt::get(V->getType(), MaskValues[ct]);
-      Value *LHS = Builder.CreateAnd(PartValue, MaskCst, "cppop.and1");
-      Value *VShift = Builder.CreateLShr(PartValue,
-                                        ConstantInt::get(V->getType(), i),
-                                         "ctpop.sh");
-      Value *RHS = Builder.CreateAnd(VShift, MaskCst, "cppop.and2");
-      PartValue = Builder.CreateAdd(LHS, RHS, "ctpop.step");
-    }
-    Count = Builder.CreateAdd(PartValue, Count, "ctpop.part");
-    if (BitSize > 64) {
-      V = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 64),
-                             "ctpop.part.sh");
-      BitSize -= 64;
-    }
-  }
-
-  return Count;
-}
-
-/// Emit the code to lower ctlz of V before the specified instruction IP.
-static Value *LowerCTLZ(LLVMContext &Context, Value *V, Instruction *IP) {
-
-  IRBuilder<> Builder(IP);
-
-  unsigned BitSize = V->getType()->getPrimitiveSizeInBits();
-  for (unsigned i = 1; i < BitSize; i <<= 1) {
-    Value *ShVal = ConstantInt::get(V->getType(), i);
-    ShVal = Builder.CreateLShr(V, ShVal, "ctlz.sh");
-    V = Builder.CreateOr(V, ShVal, "ctlz.step");
-  }
-
-  V = Builder.CreateNot(V);
-  return LowerCTPOP(Context, V, IP);
-}
-
-static void ReplaceFPIntrinsicWithCall(CallInst *CI, const char *Fname,
-                                       const char *Dname,
-                                       const char *LDname) {
-  CallSite CS(CI);
-  switch (CI->getArgOperand(0)->getType()->getTypeID()) {
-  default: llvm_unreachable("Invalid type in intrinsic");
-  case Type::FloatTyID:
-    ReplaceCallWith(Fname, CI, CS.arg_begin(), CS.arg_end(),
-                  Type::getFloatTy(CI->getContext()));
-    break;
-  case Type::DoubleTyID:
-    ReplaceCallWith(Dname, CI, CS.arg_begin(), CS.arg_end(),
-                  Type::getDoubleTy(CI->getContext()));
-    break;
-  case Type::X86_FP80TyID:
-  case Type::FP128TyID:
-  case Type::PPC_FP128TyID:
-    ReplaceCallWith(LDname, CI, CS.arg_begin(), CS.arg_end(),
-                  CI->getArgOperand(0)->getType());
-    break;
-  }
-}
-
-void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
-  IRBuilder<> Builder(CI);
-  LLVMContext &Context = CI->getContext();
-
-  const Function *Callee = CI->getCalledFunction();
-  assert(Callee && "Cannot lower an indirect call!");
-
-  CallSite CS(CI);
-  switch (Callee->getIntrinsicID()) {
-  case Intrinsic::not_intrinsic:
-    report_fatal_error("Cannot lower a call to a non-intrinsic function '"+
-                      Callee->getName() + "'!");
-  default:
-    report_fatal_error("Code generator does not support intrinsic function '"+
-                      Callee->getName()+"'!");
-
-  case Intrinsic::expect: {
-    // Just replace __builtin_expect(exp, c) with EXP.
-    Value *V = CI->getArgOperand(0);
-    CI->replaceAllUsesWith(V);
-    break;
-  }
-
-    // The setjmp/longjmp intrinsics should only exist in the code if it was
-    // never optimized (ie, right out of the CFE), or if it has been hacked on
-    // by the lowerinvoke pass.  In both cases, the right thing to do is to
-    // convert the call to an explicit setjmp or longjmp call.
-  case Intrinsic::setjmp: {
-    Value *V = ReplaceCallWith("setjmp", CI, CS.arg_begin(), CS.arg_end(),
-                               Type::getInt32Ty(Context));
-    if (!CI->getType()->isVoidTy())
-      CI->replaceAllUsesWith(V);
-    break;
-  }
-  case Intrinsic::sigsetjmp:
-     if (!CI->getType()->isVoidTy())
-       CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
-     break;
-
-  case Intrinsic::longjmp: {
-    ReplaceCallWith("longjmp", CI, CS.arg_begin(), CS.arg_end(),
-                    Type::getVoidTy(Context));
-    break;
-  }
-
-  case Intrinsic::siglongjmp: {
-    // Insert the call to abort
-    ReplaceCallWith("abort", CI, CS.arg_end(), CS.arg_end(),
-                    Type::getVoidTy(Context));
-    break;
-  }
-  case Intrinsic::ctpop:
-    CI->replaceAllUsesWith(LowerCTPOP(Context, CI->getArgOperand(0), CI));
-    break;
-
-  case Intrinsic::bswap:
-    CI->replaceAllUsesWith(LowerBSWAP(Context, CI->getArgOperand(0), CI));
-    break;
-
-  case Intrinsic::ctlz:
-    CI->replaceAllUsesWith(LowerCTLZ(Context, CI->getArgOperand(0), CI));
-    break;
-
-  case Intrinsic::cttz: {
-    // cttz(x) -> ctpop(~X & (X-1))
-    Value *Src = CI->getArgOperand(0);
-    Value *NotSrc = Builder.CreateNot(Src);
-    NotSrc->setName(Src->getName() + ".not");
-    Value *SrcM1 = ConstantInt::get(Src->getType(), 1);
-    SrcM1 = Builder.CreateSub(Src, SrcM1);
-    Src = LowerCTPOP(Context, Builder.CreateAnd(NotSrc, SrcM1), CI);
-    CI->replaceAllUsesWith(Src);
-    break;
-  }
-
-  case Intrinsic::stacksave:
-  case Intrinsic::stackrestore: {
-    if (!Warned)
-      errs() << "WARNING: this target does not support the llvm.stack"
-             << (Callee->getIntrinsicID() == Intrinsic::stacksave ?
-               "save" : "restore") << " intrinsic.\n";
-    Warned = true;
-    if (Callee->getIntrinsicID() == Intrinsic::stacksave)
-      CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
-    break;
-  }
-
-  case Intrinsic::get_dynamic_area_offset:
-    errs() << "WARNING: this target does not support the custom llvm.get."
-              "dynamic.area.offset.  It is being lowered to a constant 0\n";
-    // Just lower it to a constant 0 because for most targets
-    // @llvm.get.dynamic.area.offset is lowered to zero.
-    CI->replaceAllUsesWith(ConstantInt::get(CI->getType(), 0));
-    break;
-  case Intrinsic::returnaddress:
-  case Intrinsic::frameaddress:
-    errs() << "WARNING: this target does not support the llvm."
-           << (Callee->getIntrinsicID() == Intrinsic::returnaddress ?
-             "return" : "frame") << "address intrinsic.\n";
-    CI->replaceAllUsesWith(
-        ConstantPointerNull::get(cast<PointerType>(CI->getType())));
-    break;
-  case Intrinsic::addressofreturnaddress:
-    errs() << "WARNING: this target does not support the "
-              "llvm.addressofreturnaddress intrinsic.\n";
-    CI->replaceAllUsesWith(
-        ConstantPointerNull::get(cast<PointerType>(CI->getType())));
-    break;
-
-  case Intrinsic::prefetch:
-    break;    // Simply strip out prefetches on unsupported architectures
-
-  case Intrinsic::pcmarker:
-    break;    // Simply strip out pcmarker on unsupported architectures
-  case Intrinsic::readcyclecounter: {
-    errs() << "WARNING: this target does not support the llvm.readcyclecoun"
-           << "ter intrinsic.  It is being lowered to a constant 0\n";
-    CI->replaceAllUsesWith(ConstantInt::get(Type::getInt64Ty(Context), 0));
-    break;
-  }
-
-  case Intrinsic::dbg_declare:
-  case Intrinsic::dbg_label:
-    break;    // Simply strip out debugging intrinsics
-
-  case Intrinsic::eh_typeid_for:
-    // Return something different to eh_selector.
-    CI->replaceAllUsesWith(ConstantInt::get(CI->getType(), 1));
-    break;
-
-  case Intrinsic::annotation:
-  case Intrinsic::ptr_annotation:
-    // Just drop the annotation, but forward the value
-    CI->replaceAllUsesWith(CI->getOperand(0));
-    break;
-
-  case Intrinsic::assume:
-  case Intrinsic::var_annotation:
-    break;   // Strip out these intrinsics
-
-  case Intrinsic::memcpy: {
-    Type *IntPtr = DL.getIntPtrType(Context);
-    Value *Size = Builder.CreateIntCast(CI->getArgOperand(2), IntPtr,
-                                        /* isSigned */ false);
-    Value *Ops[3];
-    Ops[0] = CI->getArgOperand(0);
-    Ops[1] = CI->getArgOperand(1);
-    Ops[2] = Size;
-    ReplaceCallWith("memcpy", CI, Ops, Ops+3, CI->getArgOperand(0)->getType());
-    break;
-  }
-  case Intrinsic::memmove: {
-    Type *IntPtr = DL.getIntPtrType(Context);
-    Value *Size = Builder.CreateIntCast(CI->getArgOperand(2), IntPtr,
-                                        /* isSigned */ false);
-    Value *Ops[3];
-    Ops[0] = CI->getArgOperand(0);
-    Ops[1] = CI->getArgOperand(1);
-    Ops[2] = Size;
-    ReplaceCallWith("memmove", CI, Ops, Ops+3, CI->getArgOperand(0)->getType());
-    break;
-  }
-  case Intrinsic::memset: {
-    Value *Op0 = CI->getArgOperand(0);
-    Type *IntPtr = DL.getIntPtrType(Op0->getType());
-    Value *Size = Builder.CreateIntCast(CI->getArgOperand(2), IntPtr,
-                                        /* isSigned */ false);
-    Value *Ops[3];
-    Ops[0] = Op0;
-    // Extend the amount to i32.
-    Ops[1] = Builder.CreateIntCast(CI->getArgOperand(1),
-                                   Type::getInt32Ty(Context),
-                                   /* isSigned */ false);
-    Ops[2] = Size;
-    ReplaceCallWith("memset", CI, Ops, Ops+3, CI->getArgOperand(0)->getType());
-    break;
-  }
-  case Intrinsic::sqrt: {
-    ReplaceFPIntrinsicWithCall(CI, "sqrtf", "sqrt", "sqrtl");
-    break;
-  }
-  case Intrinsic::log: {
-    ReplaceFPIntrinsicWithCall(CI, "logf", "log", "logl");
-    break;
-  }
-  case Intrinsic::log2: {
-    ReplaceFPIntrinsicWithCall(CI, "log2f", "log2", "log2l");
-    break;
-  }
-  case Intrinsic::log10: {
-    ReplaceFPIntrinsicWithCall(CI, "log10f", "log10", "log10l");
-    break;
-  }
-  case Intrinsic::exp: {
-    ReplaceFPIntrinsicWithCall(CI, "expf", "exp", "expl");
-    break;
-  }
-  case Intrinsic::exp2: {
-    ReplaceFPIntrinsicWithCall(CI, "exp2f", "exp2", "exp2l");
-    break;
-  }
-  case Intrinsic::pow: {
-    ReplaceFPIntrinsicWithCall(CI, "powf", "pow", "powl");
-    break;
-  }
-  case Intrinsic::sin: {
-    ReplaceFPIntrinsicWithCall(CI, "sinf", "sin", "sinl");
-    break;
-  }
-  case Intrinsic::cos: {
-    ReplaceFPIntrinsicWithCall(CI, "cosf", "cos", "cosl");
-    break;
-  }
-  case Intrinsic::floor: {
-    ReplaceFPIntrinsicWithCall(CI, "floorf", "floor", "floorl");
-    break;
-  }
-  case Intrinsic::ceil: {
-    ReplaceFPIntrinsicWithCall(CI, "ceilf", "ceil", "ceill");
-    break;
-  }
-  case Intrinsic::trunc: {
-    ReplaceFPIntrinsicWithCall(CI, "truncf", "trunc", "truncl");
-    break;
-  }
-  case Intrinsic::round: {
-    ReplaceFPIntrinsicWithCall(CI, "roundf", "round", "roundl");
-    break;
-  }
-  case Intrinsic::copysign: {
-    ReplaceFPIntrinsicWithCall(CI, "copysignf", "copysign", "copysignl");
-    break;
-  }
-  case Intrinsic::flt_rounds:
-     // Lower to "round to the nearest"
-     if (!CI->getType()->isVoidTy())
-       CI->replaceAllUsesWith(ConstantInt::get(CI->getType(), 1));
-     break;
-  case Intrinsic::invariant_start:
-  case Intrinsic::lifetime_start:
-    // Discard region information.
-    CI->replaceAllUsesWith(UndefValue::get(CI->getType()));
-    break;
-  case Intrinsic::invariant_end:
-  case Intrinsic::lifetime_end:
-    // Discard region information.
-    break;
-  }
-
-  assert(CI->use_empty() &&
-         "Lowering should have eliminated any uses of the intrinsic call!");
-  CI->eraseFromParent();
-}
-
-bool IntrinsicLowering::LowerToByteSwap(CallInst *CI) {
-  // Verify this is a simple bswap.
-  if (CI->getNumArgOperands() != 1 ||
-      CI->getType() != CI->getArgOperand(0)->getType() ||
-      !CI->getType()->isIntegerTy())
-    return false;
-
-  IntegerType *Ty = dyn_cast<IntegerType>(CI->getType());
-  if (!Ty)
-    return false;
-
-  // Okay, we can do this xform, do so now.
-  Module *M = CI->getModule();
-  Function *Int = Intrinsic::getDeclaration(M, Intrinsic::bswap, Ty);
-
-  Value *Op = CI->getArgOperand(0);
-  Op = CallInst::Create(Int, Op, CI->getName(), CI);
-
-  CI->replaceAllUsesWith(Op);
-  CI->eraseFromParent();
-  return true;
-}