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-rw-r--r--lib/CodeGen/IntrinsicLowering.cpp113
1 files changed, 39 insertions, 74 deletions
diff --git a/lib/CodeGen/IntrinsicLowering.cpp b/lib/CodeGen/IntrinsicLowering.cpp
index 41d48d947e..ba89052572 100644
--- a/lib/CodeGen/IntrinsicLowering.cpp
+++ b/lib/CodeGen/IntrinsicLowering.cpp
@@ -21,15 +21,14 @@
using namespace llvm;
template <class ArgIt>
-static Function *EnsureFunctionExists(Module &M, const char *Name,
- ArgIt ArgBegin, ArgIt ArgEnd,
- const Type *RetTy) {
- if (Function *F = M.getNamedFunction(Name)) return F;
- // It doesn't already exist in the program, insert a new definition now.
+static void EnsureFunctionExists(Module &M, const char *Name,
+ ArgIt ArgBegin, ArgIt ArgEnd,
+ const Type *RetTy) {
+ // Insert a correctly-typed definition now.
std::vector<const Type *> ParamTys;
for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
ParamTys.push_back(I->getType());
- return M.getOrInsertFunction(Name, FunctionType::get(RetTy, ParamTys, false));
+ M.getOrInsertFunction(Name, FunctionType::get(RetTy, ParamTys, false));
}
/// ReplaceCallWith - This function is used when we want to lower an intrinsic
@@ -38,53 +37,24 @@ static Function *EnsureFunctionExists(Module &M, const char *Name,
/// 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, bool isSigned,
- const Type *RetTy, Function *&FCache) {
+ ArgIt ArgBegin, ArgIt ArgEnd,
+ const Type *RetTy, Constant *&FCache) {
if (!FCache) {
// 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();
- FCache = M->getNamedFunction(NewFn);
- if (!FCache) {
- // It doesn't already exist in the program, insert a new definition now.
- std::vector<const Type *> ParamTys;
- for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
- ParamTys.push_back((*I)->getType());
- FCache = M->getOrInsertFunction(NewFn,
- FunctionType::get(RetTy, ParamTys, false));
- }
- }
-
- const FunctionType *FT = FCache->getFunctionType();
- std::vector<Value*> Operands;
- unsigned ArgNo = 0;
- for (ArgIt I = ArgBegin; I != ArgEnd && ArgNo != FT->getNumParams();
- ++I, ++ArgNo) {
- Value *Arg = *I;
- if (Arg->getType() != FT->getParamType(ArgNo)) {
- Instruction::CastOps opcode = CastInst::getCastOpcode(Arg, isSigned,
- FT->getParamType(ArgNo), isSigned);
- Arg = CastInst::create(opcode, Arg, FT->getParamType(ArgNo),
- Arg->getName(), CI);
- }
- Operands.push_back(Arg);
+ // Get or insert the definition now.
+ std::vector<const Type *> ParamTys;
+ for (ArgIt I = ArgBegin; I != ArgEnd; ++I)
+ ParamTys.push_back((*I)->getType());
+ FCache = M->getOrInsertFunction(NewFn,
+ FunctionType::get(RetTy, ParamTys, false));
}
- // Pass nulls into any additional arguments...
- for (; ArgNo != FT->getNumParams(); ++ArgNo)
- Operands.push_back(Constant::getNullValue(FT->getParamType(ArgNo)));
- std::string Name = CI->getName(); CI->setName("");
- if (FT->getReturnType() == Type::VoidTy) Name.clear();
- CallInst *NewCI = new CallInst(FCache, Operands, Name, CI);
- if (!CI->use_empty()) {
- Value *V = NewCI;
- if (CI->getType() != NewCI->getType()) {
- Instruction::CastOps opcode = CastInst::getCastOpcode(NewCI, isSigned,
- CI->getType(), isSigned);
- V = CastInst::create(opcode, NewCI, CI->getType(), Name, CI);
- }
- CI->replaceAllUsesWith(V);
- }
+ std::vector<Value*> Operands(ArgBegin, ArgEnd);
+ CallInst *NewCI = new CallInst(FCache, Operands, CI->getName(), CI);
+ if (!CI->use_empty())
+ CI->replaceAllUsesWith(NewCI);
return NewCI;
}
@@ -286,10 +256,9 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
// 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: {
- static Function *SetjmpFCache = 0;
- static const unsigned castOpcodes[] = { Instruction::BitCast };
+ static Constant *SetjmpFCache = 0;
Value *V = ReplaceCallWith("setjmp", CI, CI->op_begin()+1, CI->op_end(),
- castOpcodes, Type::Int32Ty, SetjmpFCache);
+ Type::Int32Ty, SetjmpFCache);
if (CI->getType() != Type::VoidTy)
CI->replaceAllUsesWith(V);
break;
@@ -300,21 +269,17 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
break;
case Intrinsic::longjmp: {
- static Function *LongjmpFCache = 0;
- static const unsigned castOpcodes[] =
- { Instruction::BitCast, 0 };
+ static Constant *LongjmpFCache = 0;
ReplaceCallWith("longjmp", CI, CI->op_begin()+1, CI->op_end(),
- castOpcodes, Type::VoidTy, LongjmpFCache);
+ Type::VoidTy, LongjmpFCache);
break;
}
case Intrinsic::siglongjmp: {
// Insert the call to abort
- static Function *AbortFCache = 0;
- static const unsigned castOpcodes[] =
- { Instruction::BitCast, 0 };
+ static Constant *AbortFCache = 0;
ReplaceCallWith("abort", CI, CI->op_end(), CI->op_end(),
- castOpcodes, Type::VoidTy, AbortFCache);
+ Type::VoidTy, AbortFCache);
break;
}
case Intrinsic::ctpop_i8:
@@ -393,38 +358,38 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
break; // Simply strip out debugging intrinsics
case Intrinsic::memcpy_i32: {
- static Function *MemcpyFCache = 0;
+ static Constant *MemcpyFCache = 0;
ReplaceCallWith("memcpy", CI, CI->op_begin()+1, CI->op_end()-1,
- false, (*(CI->op_begin()+1))->getType(), MemcpyFCache);
+ (*(CI->op_begin()+1))->getType(), MemcpyFCache);
break;
}
case Intrinsic::memcpy_i64: {
- static Function *MemcpyFCache = 0;
+ static Constant *MemcpyFCache = 0;
ReplaceCallWith("memcpy", CI, CI->op_begin()+1, CI->op_end()-1,
- false, (*(CI->op_begin()+1))->getType(), MemcpyFCache);
+ (*(CI->op_begin()+1))->getType(), MemcpyFCache);
break;
}
case Intrinsic::memmove_i32: {
- static Function *MemmoveFCache = 0;
+ static Constant *MemmoveFCache = 0;
ReplaceCallWith("memmove", CI, CI->op_begin()+1, CI->op_end()-1,
- false, (*(CI->op_begin()+1))->getType(), MemmoveFCache);
+ (*(CI->op_begin()+1))->getType(), MemmoveFCache);
break;
}
case Intrinsic::memmove_i64: {
- static Function *MemmoveFCache = 0;
+ static Constant *MemmoveFCache = 0;
ReplaceCallWith("memmove", CI, CI->op_begin()+1, CI->op_end()-1,
- false, (*(CI->op_begin()+1))->getType(), MemmoveFCache);
+ (*(CI->op_begin()+1))->getType(), MemmoveFCache);
break;
}
case Intrinsic::memset_i32: {
- static Function *MemsetFCache = 0;
+ static Constant *MemsetFCache = 0;
ReplaceCallWith("memset", CI, CI->op_begin()+1, CI->op_end()-1,
- true, (*(CI->op_begin()+1))->getType(), MemsetFCache);
+ (*(CI->op_begin()+1))->getType(), MemsetFCache);
}
case Intrinsic::memset_i64: {
- static Function *MemsetFCache = 0;
+ static Constant *MemsetFCache = 0;
ReplaceCallWith("memset", CI, CI->op_begin()+1, CI->op_end()-1,
- true, (*(CI->op_begin()+1))->getType(), MemsetFCache);
+ (*(CI->op_begin()+1))->getType(), MemsetFCache);
break;
}
case Intrinsic::isunordered_f32:
@@ -440,15 +405,15 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
break;
}
case Intrinsic::sqrt_f32: {
- static Function *sqrtfFCache = 0;
+ static Constant *sqrtfFCache = 0;
ReplaceCallWith("sqrtf", CI, CI->op_begin()+1, CI->op_end(),
- false, Type::FloatTy, sqrtfFCache);
+ Type::FloatTy, sqrtfFCache);
break;
}
case Intrinsic::sqrt_f64: {
- static Function *sqrtFCache = 0;
+ static Constant *sqrtFCache = 0;
ReplaceCallWith("sqrt", CI, CI->op_begin()+1, CI->op_end(),
- false, Type::DoubleTy, sqrtFCache);
+ Type::DoubleTy, sqrtFCache);
break;
}
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-04-30 20:32:16 +0000