#include "llvm/Module.h"
#include "llvm/Type.h"
#include "llvm/CodeGen/IntrinsicLowering.h"
+#include "llvm/Support/CallSite.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/IRBuilder.h"
+#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetData.h"
#include "llvm/ADT/SmallVector.h"
using namespace llvm;
template <class ArgIt>
static void EnsureFunctionExists(Module &M, const char *Name,
ArgIt ArgBegin, ArgIt ArgEnd,
- const Type *RetTy) {
+ Type *RetTy) {
// Insert a correctly-typed definition now.
- std::vector<const Type *> ParamTys;
+ std::vector<Type *> ParamTys;
for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
ParamTys.push_back(I->getType());
M.getOrInsertFunction(Name, FunctionType::get(RetTy, ParamTys, false));
switch((int)Fn->arg_begin()->getType()->getTypeID()) {
case Type::FloatTyID:
EnsureFunctionExists(M, FName, Fn->arg_begin(), Fn->arg_end(),
- Type::FloatTy);
+ Type::getFloatTy(M.getContext()));
break;
case Type::DoubleTyID:
EnsureFunctionExists(M, DName, Fn->arg_begin(), Fn->arg_end(),
- Type::DoubleTy);
+ Type::getDoubleTy(M.getContext()));
break;
case Type::X86_FP80TyID:
case Type::FP128TyID:
template <class ArgIt>
static CallInst *ReplaceCallWith(const char *NewFn, CallInst *CI,
ArgIt ArgBegin, ArgIt ArgEnd,
- const Type *RetTy) {
+ 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->getParent()->getParent()->getParent();
// Get or insert the definition now.
- std::vector<const Type *> ParamTys;
+ std::vector<Type *> ParamTys;
for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
ParamTys.push_back((*I)->getType());
Constant* FCache = M->getOrInsertFunction(NewFn,
IRBuilder<> Builder(CI->getParent(), CI);
SmallVector<Value *, 8> Args(ArgBegin, ArgEnd);
- CallInst *NewCI = Builder.CreateCall(FCache, Args.begin(), Args.end());
+ 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
+
void IntrinsicLowering::AddPrototypes(Module &M) {
+ LLVMContext &Context = M.getContext();
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
if (I->isDeclaration() && !I->use_empty())
switch (I->getIntrinsicID()) {
default: break;
case Intrinsic::setjmp:
EnsureFunctionExists(M, "setjmp", I->arg_begin(), I->arg_end(),
- Type::Int32Ty);
+ Type::getInt32Ty(M.getContext()));
break;
case Intrinsic::longjmp:
EnsureFunctionExists(M, "longjmp", I->arg_begin(), I->arg_end(),
- Type::VoidTy);
+ Type::getVoidTy(M.getContext()));
break;
case Intrinsic::siglongjmp:
EnsureFunctionExists(M, "abort", I->arg_end(), I->arg_end(),
- Type::VoidTy);
+ Type::getVoidTy(M.getContext()));
break;
case Intrinsic::memcpy:
- M.getOrInsertFunction("memcpy", PointerType::getUnqual(Type::Int8Ty),
- PointerType::getUnqual(Type::Int8Ty),
- PointerType::getUnqual(Type::Int8Ty),
- TD.getIntPtrType(), (Type *)0);
+ M.getOrInsertFunction("memcpy",
+ Type::getInt8PtrTy(Context),
+ Type::getInt8PtrTy(Context),
+ Type::getInt8PtrTy(Context),
+ TD.getIntPtrType(Context), (Type *)0);
break;
case Intrinsic::memmove:
- M.getOrInsertFunction("memmove", PointerType::getUnqual(Type::Int8Ty),
- PointerType::getUnqual(Type::Int8Ty),
- PointerType::getUnqual(Type::Int8Ty),
- TD.getIntPtrType(), (Type *)0);
+ M.getOrInsertFunction("memmove",
+ Type::getInt8PtrTy(Context),
+ Type::getInt8PtrTy(Context),
+ Type::getInt8PtrTy(Context),
+ TD.getIntPtrType(Context), (Type *)0);
break;
case Intrinsic::memset:
- M.getOrInsertFunction("memset", PointerType::getUnqual(Type::Int8Ty),
- PointerType::getUnqual(Type::Int8Ty),
- Type::Int32Ty,
- TD.getIntPtrType(), (Type *)0);
+ M.getOrInsertFunction("memset",
+ Type::getInt8PtrTy(Context),
+ Type::getInt8PtrTy(Context),
+ Type::getInt32Ty(M.getContext()),
+ TD.getIntPtrType(Context), (Type *)0);
break;
case Intrinsic::sqrt:
EnsureFPIntrinsicsExist(M, I, "sqrtf", "sqrt", "sqrtl");
/// LowerBSWAP - Emit the code to lower bswap of V before the specified
/// instruction IP.
-static Value *LowerBSWAP(Value *V, Instruction *IP) {
- assert(V->getType()->isInteger() && "Can't bswap a non-integer type!");
+static Value *LowerBSWAP(LLVMContext &Context, Value *V, Instruction *IP) {
+ assert(V->getType()->isIntegerTy() && "Can't bswap a non-integer type!");
unsigned BitSize = V->getType()->getPrimitiveSizeInBits();
IRBuilder<> Builder(IP->getParent(), IP);
switch(BitSize) {
- default: assert(0 && "Unhandled type size of value to byteswap!");
+ default: llvm_unreachable("Unhandled type size of value to byteswap!");
case 16: {
Value *Tmp1 = Builder.CreateShl(V, ConstantInt::get(V->getType(), 8),
"bswap.2");
"bswap.3");
Value *Tmp2 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
"bswap.2");
- Value *Tmp1 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 24),
+ Value *Tmp1 = Builder.CreateLShr(V,ConstantInt::get(V->getType(), 24),
"bswap.1");
- Tmp3 = Builder.CreateAnd(Tmp3, ConstantInt::get(Type::Int32Ty, 0xFF0000),
+ Tmp3 = Builder.CreateAnd(Tmp3,
+ ConstantInt::get(Type::getInt32Ty(Context), 0xFF0000),
"bswap.and3");
- Tmp2 = Builder.CreateAnd(Tmp2, ConstantInt::get(Type::Int32Ty, 0xFF00),
+ Tmp2 = Builder.CreateAnd(Tmp2,
+ ConstantInt::get(Type::getInt32Ty(Context), 0xFF00),
"bswap.and2");
Tmp4 = Builder.CreateOr(Tmp4, Tmp3, "bswap.or1");
Tmp2 = Builder.CreateOr(Tmp2, Tmp1, "bswap.or2");
"bswap.5");
Value* Tmp4 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 8),
"bswap.4");
- Value* Tmp3 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 24),
+ Value* Tmp3 = Builder.CreateLShr(V,
+ ConstantInt::get(V->getType(), 24),
"bswap.3");
- Value* Tmp2 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 40),
+ Value* Tmp2 = Builder.CreateLShr(V,
+ ConstantInt::get(V->getType(), 40),
"bswap.2");
- Value* Tmp1 = Builder.CreateLShr(V, ConstantInt::get(V->getType(), 56),
+ Value* Tmp1 = Builder.CreateLShr(V,
+ ConstantInt::get(V->getType(), 56),
"bswap.1");
Tmp7 = Builder.CreateAnd(Tmp7,
- ConstantInt::get(Type::Int64Ty,
+ ConstantInt::get(Type::getInt64Ty(Context),
0xFF000000000000ULL),
"bswap.and7");
Tmp6 = Builder.CreateAnd(Tmp6,
- ConstantInt::get(Type::Int64Ty,
+ ConstantInt::get(Type::getInt64Ty(Context),
0xFF0000000000ULL),
"bswap.and6");
Tmp5 = Builder.CreateAnd(Tmp5,
- ConstantInt::get(Type::Int64Ty, 0xFF00000000ULL),
+ ConstantInt::get(Type::getInt64Ty(Context),
+ 0xFF00000000ULL),
"bswap.and5");
Tmp4 = Builder.CreateAnd(Tmp4,
- ConstantInt::get(Type::Int64Ty, 0xFF000000ULL),
+ ConstantInt::get(Type::getInt64Ty(Context),
+ 0xFF000000ULL),
"bswap.and4");
Tmp3 = Builder.CreateAnd(Tmp3,
- ConstantInt::get(Type::Int64Ty, 0xFF0000ULL),
+ ConstantInt::get(Type::getInt64Ty(Context),
+ 0xFF0000ULL),
"bswap.and3");
Tmp2 = Builder.CreateAnd(Tmp2,
- ConstantInt::get(Type::Int64Ty, 0xFF00ULL),
+ ConstantInt::get(Type::getInt64Ty(Context),
+ 0xFF00ULL),
"bswap.and2");
Tmp8 = Builder.CreateOr(Tmp8, Tmp7, "bswap.or1");
Tmp6 = Builder.CreateOr(Tmp6, Tmp5, "bswap.or2");
/// LowerCTPOP - Emit the code to lower ctpop of V before the specified
/// instruction IP.
-static Value *LowerCTPOP(Value *V, Instruction *IP) {
- assert(V->getType()->isInteger() && "Can't ctpop a non-integer type!");
+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,
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),
+ ConstantInt::get(V->getType(), i),
"ctpop.sh");
Value *RHS = Builder.CreateAnd(VShift, MaskCst, "cppop.and2");
PartValue = Builder.CreateAdd(LHS, RHS, "ctpop.step");
/// LowerCTLZ - Emit the code to lower ctlz of V before the specified
/// instruction IP.
-static Value *LowerCTLZ(Value *V, Instruction *IP) {
+static Value *LowerCTLZ(LLVMContext &Context, Value *V, Instruction *IP) {
IRBuilder<> Builder(IP->getParent(), IP);
}
V = Builder.CreateNot(V);
- return LowerCTPOP(V, IP);
-}
-
-/// Convert the llvm.part.select.iX.iY intrinsic. This intrinsic takes
-/// three integer arguments. The first argument is the Value from which the
-/// bits will be selected. It may be of any bit width. The second and third
-/// arguments specify a range of bits to select with the second argument
-/// specifying the low bit and the third argument specifying the high bit. Both
-/// must be type i32. The result is the corresponding selected bits from the
-/// Value in the same width as the Value (first argument). If the low bit index
-/// is higher than the high bit index then the inverse selection is done and
-/// the bits are returned in inverse order.
-/// @brief Lowering of llvm.part.select intrinsic.
-static Instruction *LowerPartSelect(CallInst *CI) {
- IRBuilder<> Builder;
-
- // Make sure we're dealing with a part select intrinsic here
- Function *F = CI->getCalledFunction();
- const FunctionType *FT = F->getFunctionType();
- if (!F->isDeclaration() || !FT->getReturnType()->isInteger() ||
- FT->getNumParams() != 3 || !FT->getParamType(0)->isInteger() ||
- !FT->getParamType(1)->isInteger() || !FT->getParamType(2)->isInteger())
- return CI;
-
- // Get the intrinsic implementation function by converting all the . to _
- // in the intrinsic's function name and then reconstructing the function
- // declaration.
- std::string Name(F->getName());
- for (unsigned i = 4; i < Name.length(); ++i)
- if (Name[i] == '.')
- Name[i] = '_';
- Module* M = F->getParent();
- F = cast<Function>(M->getOrInsertFunction(Name, FT));
- F->setLinkage(GlobalValue::WeakAnyLinkage);
-
- // If we haven't defined the impl function yet, do so now
- if (F->isDeclaration()) {
-
- // Get the arguments to the function
- Function::arg_iterator args = F->arg_begin();
- Value* Val = args++; Val->setName("Val");
- Value* Lo = args++; Lo->setName("Lo");
- Value* Hi = args++; Hi->setName("High");
-
- // We want to select a range of bits here such that [Hi, Lo] is shifted
- // down to the low bits. However, it is quite possible that Hi is smaller
- // than Lo in which case the bits have to be reversed.
-
- // Create the blocks we will need for the two cases (forward, reverse)
- BasicBlock* CurBB = BasicBlock::Create("entry", F);
- BasicBlock *RevSize = BasicBlock::Create("revsize", CurBB->getParent());
- BasicBlock *FwdSize = BasicBlock::Create("fwdsize", CurBB->getParent());
- BasicBlock *Compute = BasicBlock::Create("compute", CurBB->getParent());
- BasicBlock *Reverse = BasicBlock::Create("reverse", CurBB->getParent());
- BasicBlock *RsltBlk = BasicBlock::Create("result", CurBB->getParent());
-
- Builder.SetInsertPoint(CurBB);
-
- // Cast Hi and Lo to the size of Val so the widths are all the same
- if (Hi->getType() != Val->getType())
- Hi = Builder.CreateIntCast(Hi, Val->getType(), /* isSigned */ false,
- "tmp");
- if (Lo->getType() != Val->getType())
- Lo = Builder.CreateIntCast(Lo, Val->getType(), /* isSigned */ false,
- "tmp");
-
- // Compute a few things that both cases will need, up front.
- Constant* Zero = ConstantInt::get(Val->getType(), 0);
- Constant* One = ConstantInt::get(Val->getType(), 1);
- Constant* AllOnes = ConstantInt::getAllOnesValue(Val->getType());
-
- // Compare the Hi and Lo bit positions. This is used to determine
- // which case we have (forward or reverse)
- Value *Cmp = Builder.CreateICmpULT(Hi, Lo, "less");
- Builder.CreateCondBr(Cmp, RevSize, FwdSize);
-
- // First, compute the number of bits in the forward case.
- Builder.SetInsertPoint(FwdSize);
- Value* FBitSize = Builder.CreateSub(Hi, Lo, "fbits");
- Builder.CreateBr(Compute);
-
- // Second, compute the number of bits in the reverse case.
- Builder.SetInsertPoint(RevSize);
- Value* RBitSize = Builder.CreateSub(Lo, Hi, "rbits");
- Builder.CreateBr(Compute);
-
- // Now, compute the bit range. Start by getting the bitsize and the shift
- // amount (either Hi or Lo) from PHI nodes. Then we compute a mask for
- // the number of bits we want in the range. We shift the bits down to the
- // least significant bits, apply the mask to zero out unwanted high bits,
- // and we have computed the "forward" result. It may still need to be
- // reversed.
- Builder.SetInsertPoint(Compute);
-
- // Get the BitSize from one of the two subtractions
- PHINode *BitSize = Builder.CreatePHI(Val->getType(), "bits");
- BitSize->reserveOperandSpace(2);
- BitSize->addIncoming(FBitSize, FwdSize);
- BitSize->addIncoming(RBitSize, RevSize);
-
- // Get the ShiftAmount as the smaller of Hi/Lo
- PHINode *ShiftAmt = Builder.CreatePHI(Val->getType(), "shiftamt");
- ShiftAmt->reserveOperandSpace(2);
- ShiftAmt->addIncoming(Lo, FwdSize);
- ShiftAmt->addIncoming(Hi, RevSize);
-
- // Increment the bit size
- Value *BitSizePlusOne = Builder.CreateAdd(BitSize, One, "bits");
-
- // Create a Mask to zero out the high order bits.
- Value* Mask = Builder.CreateShl(AllOnes, BitSizePlusOne, "mask");
- Mask = Builder.CreateNot(Mask, "mask");
-
- // Shift the bits down and apply the mask
- Value* FRes = Builder.CreateLShr(Val, ShiftAmt, "fres");
- FRes = Builder.CreateAnd(FRes, Mask, "fres");
- Builder.CreateCondBr(Cmp, Reverse, RsltBlk);
-
- // In the Reverse block we have the mask already in FRes but we must reverse
- // it by shifting FRes bits right and putting them in RRes by shifting them
- // in from left.
- Builder.SetInsertPoint(Reverse);
-
- // First set up our loop counters
- PHINode *Count = Builder.CreatePHI(Val->getType(), "count");
- Count->reserveOperandSpace(2);
- Count->addIncoming(BitSizePlusOne, Compute);
-
- // Next, get the value that we are shifting.
- PHINode *BitsToShift = Builder.CreatePHI(Val->getType(), "val");
- BitsToShift->reserveOperandSpace(2);
- BitsToShift->addIncoming(FRes, Compute);
-
- // Finally, get the result of the last computation
- PHINode *RRes = Builder.CreatePHI(Val->getType(), "rres");
- RRes->reserveOperandSpace(2);
- RRes->addIncoming(Zero, Compute);
-
- // Decrement the counter
- Value *Decr = Builder.CreateSub(Count, One, "decr");
- Count->addIncoming(Decr, Reverse);
-
- // Compute the Bit that we want to move
- Value *Bit = Builder.CreateAnd(BitsToShift, One, "bit");
-
- // Compute the new value for next iteration.
- Value *NewVal = Builder.CreateLShr(BitsToShift, One, "rshift");
- BitsToShift->addIncoming(NewVal, Reverse);
-
- // Shift the bit into the low bits of the result.
- Value *NewRes = Builder.CreateShl(RRes, One, "lshift");
- NewRes = Builder.CreateOr(NewRes, Bit, "addbit");
- RRes->addIncoming(NewRes, Reverse);
-
- // Terminate loop if we've moved all the bits.
- Value *Cond = Builder.CreateICmpEQ(Decr, Zero, "cond");
- Builder.CreateCondBr(Cond, RsltBlk, Reverse);
-
- // Finally, in the result block, select one of the two results with a PHI
- // node and return the result;
- Builder.SetInsertPoint(RsltBlk);
- PHINode *BitSelect = Builder.CreatePHI(Val->getType(), "part_select");
- BitSelect->reserveOperandSpace(2);
- BitSelect->addIncoming(FRes, Compute);
- BitSelect->addIncoming(NewRes, Reverse);
- Builder.CreateRet(BitSelect);
- }
-
- // Return a call to the implementation function
- Builder.SetInsertPoint(CI->getParent(), CI);
- CallInst *NewCI = Builder.CreateCall3(F, CI->getOperand(1),
- CI->getOperand(2), CI->getOperand(3));
- NewCI->setName(CI->getName());
- return NewCI;
-}
-
-/// Convert the llvm.part.set.iX.iY.iZ intrinsic. This intrinsic takes
-/// four integer arguments (iAny %Value, iAny %Replacement, i32 %Low, i32 %High)
-/// The first two arguments can be any bit width. The result is the same width
-/// as %Value. The operation replaces bits between %Low and %High with the value
-/// in %Replacement. If %Replacement is not the same width, it is truncated or
-/// zero extended as appropriate to fit the bits being replaced. If %Low is
-/// greater than %High then the inverse set of bits are replaced.
-/// @brief Lowering of llvm.bit.part.set intrinsic.
-static Instruction *LowerPartSet(CallInst *CI) {
- IRBuilder<> Builder;
-
- // Make sure we're dealing with a part select intrinsic here
- Function *F = CI->getCalledFunction();
- const FunctionType *FT = F->getFunctionType();
- if (!F->isDeclaration() || !FT->getReturnType()->isInteger() ||
- FT->getNumParams() != 4 || !FT->getParamType(0)->isInteger() ||
- !FT->getParamType(1)->isInteger() || !FT->getParamType(2)->isInteger() ||
- !FT->getParamType(3)->isInteger())
- return CI;
-
- // Get the intrinsic implementation function by converting all the . to _
- // in the intrinsic's function name and then reconstructing the function
- // declaration.
- std::string Name(F->getName());
- for (unsigned i = 4; i < Name.length(); ++i)
- if (Name[i] == '.')
- Name[i] = '_';
- Module* M = F->getParent();
- F = cast<Function>(M->getOrInsertFunction(Name, FT));
- F->setLinkage(GlobalValue::WeakAnyLinkage);
-
- // If we haven't defined the impl function yet, do so now
- if (F->isDeclaration()) {
- // Get the arguments for the function.
- Function::arg_iterator args = F->arg_begin();
- Value* Val = args++; Val->setName("Val");
- Value* Rep = args++; Rep->setName("Rep");
- Value* Lo = args++; Lo->setName("Lo");
- Value* Hi = args++; Hi->setName("Hi");
-
- // Get some types we need
- const IntegerType* ValTy = cast<IntegerType>(Val->getType());
- const IntegerType* RepTy = cast<IntegerType>(Rep->getType());
- uint32_t RepBits = RepTy->getBitWidth();
-
- // Constant Definitions
- ConstantInt* RepBitWidth = ConstantInt::get(Type::Int32Ty, RepBits);
- ConstantInt* RepMask = ConstantInt::getAllOnesValue(RepTy);
- ConstantInt* ValMask = ConstantInt::getAllOnesValue(ValTy);
- ConstantInt* One = ConstantInt::get(Type::Int32Ty, 1);
- ConstantInt* ValOne = ConstantInt::get(ValTy, 1);
- ConstantInt* Zero = ConstantInt::get(Type::Int32Ty, 0);
- ConstantInt* ValZero = ConstantInt::get(ValTy, 0);
-
- // Basic blocks we fill in below.
- BasicBlock* entry = BasicBlock::Create("entry", F, 0);
- BasicBlock* large = BasicBlock::Create("large", F, 0);
- BasicBlock* small = BasicBlock::Create("small", F, 0);
- BasicBlock* reverse = BasicBlock::Create("reverse", F, 0);
- BasicBlock* result = BasicBlock::Create("result", F, 0);
-
- // BASIC BLOCK: entry
- Builder.SetInsertPoint(entry);
- // First, get the number of bits that we're placing as an i32
- Value* is_forward = Builder.CreateICmpULT(Lo, Hi);
- Value* Hi_pn = Builder.CreateSelect(is_forward, Hi, Lo);
- Value* Lo_pn = Builder.CreateSelect(is_forward, Lo, Hi);
- Value* NumBits = Builder.CreateSub(Hi_pn, Lo_pn);
- NumBits = Builder.CreateAdd(NumBits, One);
- // Now, convert Lo and Hi to ValTy bit width
- Lo = Builder.CreateIntCast(Lo_pn, ValTy, /* isSigned */ false);
- // Determine if the replacement bits are larger than the number of bits we
- // are replacing and deal with it.
- Value* is_large = Builder.CreateICmpULT(NumBits, RepBitWidth);
- Builder.CreateCondBr(is_large, large, small);
-
- // BASIC BLOCK: large
- Builder.SetInsertPoint(large);
- Value* MaskBits = Builder.CreateSub(RepBitWidth, NumBits);
- MaskBits = Builder.CreateIntCast(MaskBits, RepMask->getType(),
- /* isSigned */ false);
- Value* Mask1 = Builder.CreateLShr(RepMask, MaskBits);
- Value* Rep2 = Builder.CreateAnd(Mask1, Rep);
- Builder.CreateBr(small);
-
- // BASIC BLOCK: small
- Builder.SetInsertPoint(small);
- PHINode* Rep3 = Builder.CreatePHI(RepTy);
- Rep3->reserveOperandSpace(2);
- Rep3->addIncoming(Rep2, large);
- Rep3->addIncoming(Rep, entry);
- Value* Rep4 = Builder.CreateIntCast(Rep3, ValTy, /* isSigned */ false);
- Builder.CreateCondBr(is_forward, result, reverse);
-
- // BASIC BLOCK: reverse (reverses the bits of the replacement)
- Builder.SetInsertPoint(reverse);
- // Set up our loop counter as a PHI so we can decrement on each iteration.
- // We will loop for the number of bits in the replacement value.
- PHINode *Count = Builder.CreatePHI(Type::Int32Ty, "count");
- Count->reserveOperandSpace(2);
- Count->addIncoming(NumBits, small);
-
- // Get the value that we are shifting bits out of as a PHI because
- // we'll change this with each iteration.
- PHINode *BitsToShift = Builder.CreatePHI(Val->getType(), "val");
- BitsToShift->reserveOperandSpace(2);
- BitsToShift->addIncoming(Rep4, small);
-
- // Get the result of the last computation or zero on first iteration
- PHINode *RRes = Builder.CreatePHI(Val->getType(), "rres");
- RRes->reserveOperandSpace(2);
- RRes->addIncoming(ValZero, small);
-
- // Decrement the loop counter by one
- Value *Decr = Builder.CreateSub(Count, One);
- Count->addIncoming(Decr, reverse);
-
- // Get the bit that we want to move into the result
- Value *Bit = Builder.CreateAnd(BitsToShift, ValOne);
-
- // Compute the new value of the bits to shift for the next iteration.
- Value *NewVal = Builder.CreateLShr(BitsToShift, ValOne);
- BitsToShift->addIncoming(NewVal, reverse);
-
- // Shift the bit we extracted into the low bit of the result.
- Value *NewRes = Builder.CreateShl(RRes, ValOne);
- NewRes = Builder.CreateOr(NewRes, Bit);
- RRes->addIncoming(NewRes, reverse);
-
- // Terminate loop if we've moved all the bits.
- Value *Cond = Builder.CreateICmpEQ(Decr, Zero);
- Builder.CreateCondBr(Cond, result, reverse);
-
- // BASIC BLOCK: result
- Builder.SetInsertPoint(result);
- PHINode *Rplcmnt = Builder.CreatePHI(Val->getType());
- Rplcmnt->reserveOperandSpace(2);
- Rplcmnt->addIncoming(NewRes, reverse);
- Rplcmnt->addIncoming(Rep4, small);
- Value* t0 = Builder.CreateIntCast(NumBits, ValTy, /* isSigned */ false);
- Value* t1 = Builder.CreateShl(ValMask, Lo);
- Value* t2 = Builder.CreateNot(t1);
- Value* t3 = Builder.CreateShl(t1, t0);
- Value* t4 = Builder.CreateOr(t2, t3);
- Value* t5 = Builder.CreateAnd(t4, Val);
- Value* t6 = Builder.CreateShl(Rplcmnt, Lo);
- Value* Rslt = Builder.CreateOr(t5, t6, "part_set");
- Builder.CreateRet(Rslt);
- }
-
- // Return a call to the implementation function
- Builder.SetInsertPoint(CI->getParent(), CI);
- CallInst *NewCI = Builder.CreateCall4(F, CI->getOperand(1),
- CI->getOperand(2), CI->getOperand(3),
- CI->getOperand(4));
- NewCI->setName(CI->getName());
- return NewCI;
+ return LowerCTPOP(Context, V, IP);
}
static void ReplaceFPIntrinsicWithCall(CallInst *CI, const char *Fname,
const char *Dname,
const char *LDname) {
- switch (CI->getOperand(1)->getType()->getTypeID()) {
- default: assert(0 && "Invalid type in intrinsic"); abort();
+ CallSite CS(CI);
+ switch (CI->getArgOperand(0)->getType()->getTypeID()) {
+ default: llvm_unreachable("Invalid type in intrinsic");
case Type::FloatTyID:
- ReplaceCallWith(Fname, CI, CI->op_begin() + 1, CI->op_end(),
- Type::FloatTy);
+ ReplaceCallWith(Fname, CI, CS.arg_begin(), CS.arg_end(),
+ Type::getFloatTy(CI->getContext()));
break;
case Type::DoubleTyID:
- ReplaceCallWith(Dname, CI, CI->op_begin() + 1, CI->op_end(),
- Type::DoubleTy);
+ 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, CI->op_begin() + 1, CI->op_end(),
- CI->getOperand(1)->getType());
+ ReplaceCallWith(LDname, CI, CS.arg_begin(), CS.arg_end(),
+ CI->getArgOperand(0)->getType());
break;
}
}
void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
IRBuilder<> Builder(CI->getParent(), CI);
+ LLVMContext &Context = CI->getContext();
- Function *Callee = CI->getCalledFunction();
+ const Function *Callee = CI->getCalledFunction();
assert(Callee && "Cannot lower an indirect call!");
+ CallSite CS(CI);
switch (Callee->getIntrinsicID()) {
case Intrinsic::not_intrinsic:
- cerr << "Cannot lower a call to a non-intrinsic function '"
- << Callee->getName() << "'!\n";
- abort();
+ report_fatal_error("Cannot lower a call to a non-intrinsic function '"+
+ Callee->getName() + "'!");
default:
- cerr << "Error: Code generator does not support intrinsic function '"
- << Callee->getName() << "'!\n";
- abort();
+ 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, CI->op_begin() + 1, CI->op_end(),
- Type::Int32Ty);
- if (CI->getType() != Type::VoidTy)
+ 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() != Type::VoidTy)
+ if (!CI->getType()->isVoidTy())
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
break;
case Intrinsic::longjmp: {
- ReplaceCallWith("longjmp", CI, CI->op_begin() + 1, CI->op_end(),
- Type::VoidTy);
+ ReplaceCallWith("longjmp", CI, CS.arg_begin(), CS.arg_end(),
+ Type::getVoidTy(Context));
break;
}
case Intrinsic::siglongjmp: {
// Insert the call to abort
- ReplaceCallWith("abort", CI, CI->op_end(), CI->op_end(),
- Type::VoidTy);
+ ReplaceCallWith("abort", CI, CS.arg_end(), CS.arg_end(),
+ Type::getVoidTy(Context));
break;
}
case Intrinsic::ctpop:
- CI->replaceAllUsesWith(LowerCTPOP(CI->getOperand(1), CI));
+ CI->replaceAllUsesWith(LowerCTPOP(Context, CI->getArgOperand(0), CI));
break;
case Intrinsic::bswap:
- CI->replaceAllUsesWith(LowerBSWAP(CI->getOperand(1), CI));
+ CI->replaceAllUsesWith(LowerBSWAP(Context, CI->getArgOperand(0), CI));
break;
case Intrinsic::ctlz:
- CI->replaceAllUsesWith(LowerCTLZ(CI->getOperand(1), CI));
+ CI->replaceAllUsesWith(LowerCTLZ(Context, CI->getArgOperand(0), CI));
break;
case Intrinsic::cttz: {
// cttz(x) -> ctpop(~X & (X-1))
- Value *Src = CI->getOperand(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(Builder.CreateAnd(NotSrc, SrcM1), CI);
+ Src = LowerCTPOP(Context, Builder.CreateAnd(NotSrc, SrcM1), CI);
CI->replaceAllUsesWith(Src);
break;
}
- case Intrinsic::part_select:
- CI->replaceAllUsesWith(LowerPartSelect(CI));
- break;
-
- case Intrinsic::part_set:
- CI->replaceAllUsesWith(LowerPartSet(CI));
- break;
-
case Intrinsic::stacksave:
case Intrinsic::stackrestore: {
if (!Warned)
- cerr << "WARNING: this target does not support the llvm.stack"
- << (Callee->getIntrinsicID() == Intrinsic::stacksave ?
+ 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)
case Intrinsic::returnaddress:
case Intrinsic::frameaddress:
- cerr << "WARNING: this target does not support the llvm."
- << (Callee->getIntrinsicID() == Intrinsic::returnaddress ?
+ 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())));
case Intrinsic::pcmarker:
break; // Simply strip out pcmarker on unsupported architectures
case Intrinsic::readcyclecounter: {
- cerr << "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::Int64Ty, 0));
+ 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_stoppoint:
- case Intrinsic::dbg_region_start:
- case Intrinsic::dbg_region_end:
- case Intrinsic::dbg_func_start:
case Intrinsic::dbg_declare:
break; // Simply strip out debugging intrinsics
- case Intrinsic::eh_exception:
- case Intrinsic::eh_selector_i32:
- case Intrinsic::eh_selector_i64:
- CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
- break;
-
- case Intrinsic::eh_typeid_for_i32:
- case Intrinsic::eh_typeid_for_i64:
+ case Intrinsic::eh_typeid_for:
// Return something different to eh_selector.
CI->replaceAllUsesWith(ConstantInt::get(CI->getType(), 1));
break;
break; // Strip out annotate intrinsic
case Intrinsic::memcpy: {
- const IntegerType *IntPtr = TD.getIntPtrType();
- Value *Size = Builder.CreateIntCast(CI->getOperand(3), IntPtr,
+ IntegerType *IntPtr = TD.getIntPtrType(Context);
+ Value *Size = Builder.CreateIntCast(CI->getArgOperand(2), IntPtr,
/* isSigned */ false);
Value *Ops[3];
- Ops[0] = CI->getOperand(1);
- Ops[1] = CI->getOperand(2);
+ Ops[0] = CI->getArgOperand(0);
+ Ops[1] = CI->getArgOperand(1);
Ops[2] = Size;
- ReplaceCallWith("memcpy", CI, Ops, Ops+3, CI->getOperand(1)->getType());
+ ReplaceCallWith("memcpy", CI, Ops, Ops+3, CI->getArgOperand(0)->getType());
break;
}
case Intrinsic::memmove: {
- const IntegerType *IntPtr = TD.getIntPtrType();
- Value *Size = Builder.CreateIntCast(CI->getOperand(3), IntPtr,
+ IntegerType *IntPtr = TD.getIntPtrType(Context);
+ Value *Size = Builder.CreateIntCast(CI->getArgOperand(2), IntPtr,
/* isSigned */ false);
Value *Ops[3];
- Ops[0] = CI->getOperand(1);
- Ops[1] = CI->getOperand(2);
+ Ops[0] = CI->getArgOperand(0);
+ Ops[1] = CI->getArgOperand(1);
Ops[2] = Size;
- ReplaceCallWith("memmove", CI, Ops, Ops+3, CI->getOperand(1)->getType());
+ ReplaceCallWith("memmove", CI, Ops, Ops+3, CI->getArgOperand(0)->getType());
break;
}
case Intrinsic::memset: {
- const IntegerType *IntPtr = TD.getIntPtrType();
- Value *Size = Builder.CreateIntCast(CI->getOperand(3), IntPtr,
+ IntegerType *IntPtr = TD.getIntPtrType(Context);
+ Value *Size = Builder.CreateIntCast(CI->getArgOperand(2), IntPtr,
/* isSigned */ false);
Value *Ops[3];
- Ops[0] = CI->getOperand(1);
+ Ops[0] = CI->getArgOperand(0);
// Extend the amount to i32.
- Ops[1] = Builder.CreateIntCast(CI->getOperand(2), Type::Int32Ty,
+ Ops[1] = Builder.CreateIntCast(CI->getArgOperand(1),
+ Type::getInt32Ty(Context),
/* isSigned */ false);
Ops[2] = Size;
- ReplaceCallWith("memset", CI, Ops, Ops+3, CI->getOperand(1)->getType());
+ ReplaceCallWith("memset", CI, Ops, Ops+3, CI->getArgOperand(0)->getType());
break;
}
case Intrinsic::sqrt: {
}
case Intrinsic::flt_rounds:
// Lower to "round to the nearest"
- if (CI->getType() != Type::VoidTy)
+ 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->getParent()->getParent()->getParent();
+ Constant *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;
+}