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Change the interface to Module::getOrInsertFunction to be easier to use,to resolve PR1088, and to help PR411.

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This simplifies many clients also


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32989 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-01-07 08:12:01 +00:00
parent 70d130516a
commit b76efb71d4
4 changed files with 118 additions and 255 deletions
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113
lib/CodeGen/IntrinsicLowering.cpp
View File

@ -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;
}
}

130
lib/Transforms/IPO/SimplifyLibCalls.cpp
View File

@ -222,7 +222,7 @@ public:
const Type* getIntPtrType() const { return TD->getIntPtrType(); }
/// @brief Return a Function* for the putchar libcall
Function* get_putchar() {
Constant *get_putchar() {
if (!putchar_func)
putchar_func =
M->getOrInsertFunction("putchar", Type::Int32Ty, Type::Int32Ty, NULL);
@ -230,7 +230,7 @@ public:
}
/// @brief Return a Function* for the puts libcall
Function* get_puts() {
Constant *get_puts() {
if (!puts_func)
puts_func = M->getOrInsertFunction("puts", Type::Int32Ty,
PointerType::get(Type::Int8Ty),
@ -239,7 +239,7 @@ public:
}
/// @brief Return a Function* for the fputc libcall
Function* get_fputc(const Type* FILEptr_type) {
Constant *get_fputc(const Type* FILEptr_type) {
if (!fputc_func)
fputc_func = M->getOrInsertFunction("fputc", Type::Int32Ty, Type::Int32Ty,
FILEptr_type, NULL);
@ -247,7 +247,7 @@ public:
}
/// @brief Return a Function* for the fputs libcall
Function* get_fputs(const Type* FILEptr_type) {
Constant *get_fputs(const Type* FILEptr_type) {
if (!fputs_func)
fputs_func = M->getOrInsertFunction("fputs", Type::Int32Ty,
PointerType::get(Type::Int8Ty),
@ -256,7 +256,7 @@ public:
}
/// @brief Return a Function* for the fwrite libcall
Function* get_fwrite(const Type* FILEptr_type) {
Constant *get_fwrite(const Type* FILEptr_type) {
if (!fwrite_func)
fwrite_func = M->getOrInsertFunction("fwrite", TD->getIntPtrType(),
PointerType::get(Type::Int8Ty),
@ -267,7 +267,7 @@ public:
}
/// @brief Return a Function* for the sqrt libcall
Function* get_sqrt() {
Constant *get_sqrt() {
if (!sqrt_func)
sqrt_func = M->getOrInsertFunction("sqrt", Type::DoubleTy,
Type::DoubleTy, NULL);
@ -275,7 +275,7 @@ public:
}
/// @brief Return a Function* for the strlen libcall
Function* get_strcpy() {
Constant *get_strcpy() {
if (!strcpy_func)
strcpy_func = M->getOrInsertFunction("strcpy",
PointerType::get(Type::Int8Ty),
@ -286,7 +286,7 @@ public:
}
/// @brief Return a Function* for the strlen libcall
Function* get_strlen() {
Constant *get_strlen() {
if (!strlen_func)
strlen_func = M->getOrInsertFunction("strlen", TD->getIntPtrType(),
PointerType::get(Type::Int8Ty),
@ -295,7 +295,7 @@ public:
}
/// @brief Return a Function* for the memchr libcall
Function* get_memchr() {
Constant *get_memchr() {
if (!memchr_func)
memchr_func = M->getOrInsertFunction("memchr",
PointerType::get(Type::Int8Ty),
@ -306,7 +306,7 @@ public:
}
/// @brief Return a Function* for the memcpy libcall
Function* get_memcpy() {
Constant *get_memcpy() {
if (!memcpy_func) {
const Type *SBP = PointerType::get(Type::Int8Ty);
const char *N = TD->getIntPtrType() == Type::Int32Ty ?
@ -318,17 +318,17 @@ public:
return memcpy_func;
}
Function *getUnaryFloatFunction(const char *Name, Function *&Cache) {
Constant *getUnaryFloatFunction(const char *Name, Constant *&Cache) {
if (!Cache)
Cache = M->getOrInsertFunction(Name, Type::FloatTy, Type::FloatTy, NULL);
return Cache;
}
Function *get_floorf() { return getUnaryFloatFunction("floorf", floorf_func);}
Function *get_ceilf() { return getUnaryFloatFunction( "ceilf", ceilf_func);}
Function *get_roundf() { return getUnaryFloatFunction("roundf", roundf_func);}
Function *get_rintf() { return getUnaryFloatFunction( "rintf", rintf_func);}
Function *get_nearbyintf() { return getUnaryFloatFunction("nearbyintf",
Constant *get_floorf() { return getUnaryFloatFunction("floorf", floorf_func);}
Constant *get_ceilf() { return getUnaryFloatFunction( "ceilf", ceilf_func);}
Constant *get_roundf() { return getUnaryFloatFunction("roundf", roundf_func);}
Constant *get_rintf() { return getUnaryFloatFunction( "rintf", rintf_func);}
Constant *get_nearbyintf() { return getUnaryFloatFunction("nearbyintf",
nearbyintf_func); }
private:
/// @brief Reset our cached data for a new Module
@ -354,13 +354,13 @@ private:
private:
/// Caches for function pointers.
Function *putchar_func, *puts_func;
Function *fputc_func, *fputs_func, *fwrite_func;
Function *memcpy_func, *memchr_func;
Function* sqrt_func;
Function *strcpy_func, *strlen_func;
Function *floorf_func, *ceilf_func, *roundf_func;
Function *rintf_func, *nearbyintf_func;
Constant *putchar_func, *puts_func;
Constant *fputc_func, *fputs_func, *fwrite_func;
Constant *memcpy_func, *memchr_func;
Constant *sqrt_func;
Constant *strcpy_func, *strlen_func;
Constant *floorf_func, *ceilf_func, *roundf_func;
Constant *rintf_func, *nearbyintf_func;
Module *M; ///< Cached Module
TargetData *TD; ///< Cached TargetData
};
@ -564,12 +564,12 @@ public:
if (!CSI) {
// The second operand is not constant, or not signed. Just lower this to
// memchr since we know the length of the string since it is constant.
Function* f = SLC.get_memchr();
Constant *f = SLC.get_memchr();
std::vector<Value*> args;
args.push_back(ci->getOperand(1));
args.push_back(ci->getOperand(2));
args.push_back(ConstantInt::get(SLC.getIntPtrType(), len));
ci->replaceAllUsesWith( new CallInst(f, args, ci->getName(), ci));
ci->replaceAllUsesWith(new CallInst(f, args, ci->getName(), ci));
ci->eraseFromParent();
return true;
}
@ -1344,13 +1344,10 @@ public:
return false;
// printf("%s\n",str) -> puts(str)
Function* puts_func = SLC.get_puts();
if (!puts_func)
return false;
std::vector<Value*> args;
args.push_back(CastToCStr(ci->getOperand(2), *ci));
new CallInst(puts_func,args,ci->getName(),ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty,len));
new CallInst(SLC.get_puts(), CastToCStr(ci->getOperand(2), *ci),
ci->getName(), ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty, len));
break;
}
case 'c':
@ -1359,12 +1356,9 @@ public:
if (len != 2)
return false;
Function* putchar_func = SLC.get_putchar();
if (!putchar_func)
return false;
CastInst* cast = CastInst::createSExtOrBitCast(
CastInst *Char = CastInst::createSExtOrBitCast(
ci->getOperand(2), Type::Int32Ty, CI->getName()+".int", ci);
new CallInst(putchar_func, cast, "", ci);
new CallInst(SLC.get_putchar(), Char, "", ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty, 1));
break;
}
@ -1424,14 +1418,10 @@ public:
// fprintf(file,fmt) -> fwrite(fmt,strlen(fmt),file)
const Type* FILEptr_type = ci->getOperand(1)->getType();
Function* fwrite_func = SLC.get_fwrite(FILEptr_type);
if (!fwrite_func)
return false;
// Make sure that the fprintf() and fwrite() functions both take the
// same type of char pointer.
if (ci->getOperand(2)->getType() !=
fwrite_func->getFunctionType()->getParamType(0))
if (ci->getOperand(2)->getType() != PointerType::get(Type::Int8Ty))
return false;
std::vector<Value*> args;
@ -1439,7 +1429,7 @@ public:
args.push_back(ConstantInt::get(SLC.getIntPtrType(),len));
args.push_back(ConstantInt::get(SLC.getIntPtrType(),1));
args.push_back(ci->getOperand(1));
new CallInst(fwrite_func,args,ci->getName(),ci);
new CallInst(SLC.get_fwrite(FILEptr_type), args, ci->getName(), ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty,len));
ci->eraseFromParent();
return true;
@ -1465,26 +1455,19 @@ public:
if (getConstantStringLength(ci->getOperand(3), len, &CA)) {
// fprintf(file,"%s",str) -> fwrite(str,strlen(str),1,file)
const Type* FILEptr_type = ci->getOperand(1)->getType();
Function* fwrite_func = SLC.get_fwrite(FILEptr_type);
if (!fwrite_func)
return false;
std::vector<Value*> args;
args.push_back(CastToCStr(ci->getOperand(3), *ci));
args.push_back(ConstantInt::get(SLC.getIntPtrType(),len));
args.push_back(ConstantInt::get(SLC.getIntPtrType(),1));
args.push_back(ConstantInt::get(SLC.getIntPtrType(), len));
args.push_back(ConstantInt::get(SLC.getIntPtrType(), 1));
args.push_back(ci->getOperand(1));
new CallInst(fwrite_func,args,ci->getName(),ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty,len));
new CallInst(SLC.get_fwrite(FILEptr_type), args, ci->getName(), ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty, len));
} else {
// fprintf(file,"%s",str) -> fputs(str,file)
const Type* FILEptr_type = ci->getOperand(1)->getType();
Function* fputs_func = SLC.get_fputs(FILEptr_type);
if (!fputs_func)
return false;
std::vector<Value*> args;
args.push_back(CastToCStr(ci->getOperand(3), *ci));
args.push_back(ci->getOperand(1));
new CallInst(fputs_func,args,ci->getName(),ci);
new CallInst(SLC.get_fputs(FILEptr_type),
CastToCStr(ci->getOperand(3), *ci),
ci->getOperand(1), ci->getName(),ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty,len));
}
break;
@ -1493,12 +1476,9 @@ public:
{
// fprintf(file,"%c",c) -> fputc(c,file)
const Type* FILEptr_type = ci->getOperand(1)->getType();
Function* fputc_func = SLC.get_fputc(FILEptr_type);
if (!fputc_func)
return false;
CastInst* cast = CastInst::createSExtOrBitCast(
ci->getOperand(3), Type::Int32Ty, CI->getName()+".int", ci);
new CallInst(fputc_func,cast,ci->getOperand(1),"",ci);
new CallInst(SLC.get_fputc(FILEptr_type), cast,ci->getOperand(1),"",ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty,1));
break;
}
@ -1563,15 +1543,12 @@ public:
len++;
// sprintf(str,fmt) -> llvm.memcpy(str,fmt,strlen(fmt),1)
Function* memcpy_func = SLC.get_memcpy();
if (!memcpy_func)
return false;
std::vector<Value*> args;
args.push_back(ci->getOperand(1));
args.push_back(ci->getOperand(2));
args.push_back(ConstantInt::get(SLC.getIntPtrType(),len));
args.push_back(ConstantInt::get(Type::Int32Ty,1));
new CallInst(memcpy_func,args,"",ci);
new CallInst(SLC.get_memcpy(), args, "", ci);
ci->replaceAllUsesWith(ConstantInt::get(Type::Int32Ty,len));
ci->eraseFromParent();
return true;
@ -1592,12 +1569,8 @@ public:
switch (CI->getZExtValue()) {
case 's': {
// sprintf(dest,"%s",str) -> llvm.memcpy(dest, str, strlen(str)+1, 1)
Function* strlen_func = SLC.get_strlen();
Function* memcpy_func = SLC.get_memcpy();
if (!strlen_func || !memcpy_func)
return false;
Value *Len = new CallInst(strlen_func, CastToCStr(ci->getOperand(3), *ci),
Value *Len = new CallInst(SLC.get_strlen(),
CastToCStr(ci->getOperand(3), *ci),
ci->getOperand(3)->getName()+".len", ci);
Value *Len1 = BinaryOperator::createAdd(Len,
ConstantInt::get(Len->getType(), 1),
@ -1610,7 +1583,7 @@ public:
args.push_back(CastToCStr(ci->getOperand(3), *ci));
args.push_back(Len1);
args.push_back(ConstantInt::get(Type::Int32Ty,1));
new CallInst(memcpy_func, args, "", ci);
new CallInst(SLC.get_memcpy(), args, "", ci);
// The strlen result is the unincremented number of bytes in the string.
if (!ci->use_empty()) {
@ -1676,29 +1649,24 @@ public:
{
// fputs(s,F) -> fputc(s[0],F) (if s is constant and strlen(s) == 1)
const Type* FILEptr_type = ci->getOperand(2)->getType();
Function* fputc_func = SLC.get_fputc(FILEptr_type);
if (!fputc_func)
return false;
LoadInst* loadi = new LoadInst(ci->getOperand(1),
ci->getOperand(1)->getName()+".byte",ci);
CastInst* casti = new SExtInst(loadi, Type::Int32Ty,
loadi->getName()+".int", ci);
new CallInst(fputc_func,casti,ci->getOperand(2),"",ci);
new CallInst(SLC.get_fputc(FILEptr_type), casti,
ci->getOperand(2), "", ci);
break;
}
default:
{
// fputs(s,F) -> fwrite(s,1,len,F) (if s is constant and strlen(s) > 1)
const Type* FILEptr_type = ci->getOperand(2)->getType();
Function* fwrite_func = SLC.get_fwrite(FILEptr_type);
if (!fwrite_func)
return false;
std::vector<Value*> parms;
parms.push_back(ci->getOperand(1));
parms.push_back(ConstantInt::get(SLC.getIntPtrType(),len));
parms.push_back(ConstantInt::get(SLC.getIntPtrType(),1));
parms.push_back(ci->getOperand(2));
new CallInst(fwrite_func,parms,"",ci);
new CallInst(SLC.get_fwrite(FILEptr_type), parms, "", ci);
break;
}
}
@ -1860,7 +1828,7 @@ public:
case Type::Int64TyID : CTTZName = "llvm.cttz.i64"; break;
}
Function *F = SLC.getModule()->getOrInsertFunction(CTTZName, ArgType,
Constant *F = SLC.getModule()->getOrInsertFunction(CTTZName, ArgType,
ArgType, NULL);
Value *V = CastInst::createIntegerCast(TheCall->getOperand(1), ArgType,
false/*ZExt*/, "tmp", TheCall);
@ -1921,7 +1889,7 @@ struct UnaryDoubleFPOptimizer : public LibCallOptimization {
/// when the target supports the destination function and where there can be
/// no precision loss.
static bool ShrinkFunctionToFloatVersion(CallInst *CI, SimplifyLibCalls &SLC,
Function *(SimplifyLibCalls::*FP)()){
Constant *(SimplifyLibCalls::*FP)()){
if (CastInst *Cast = dyn_cast<CastInst>(CI->getOperand(1)))
if (Cast->getOperand(0)->getType() == Type::FloatTy) {
Value *New = new CallInst((SLC.*FP)(), Cast->getOperand(0),

64
lib/Transforms/Utils/LowerAllocations.cpp
View File

@ -32,8 +32,8 @@ namespace {
/// %free calls.
///
class VISIBILITY_HIDDEN LowerAllocations : public BasicBlockPass {
Function *MallocFunc; // Functions in the module we are processing
Function *FreeFunc; // Initialized by doInitialization
Constant *MallocFunc; // Functions in the module we are processing
Constant *FreeFunc; // Initialized by doInitialization
bool LowerMallocArgToInteger;
public:
LowerAllocations(bool LowerToInt = false)
@ -84,19 +84,12 @@ FunctionPass *llvm::createLowerAllocationsPass(bool LowerMallocArgToInteger) {
// This function is always successful.
//
bool LowerAllocations::doInitialization(Module &M) {
const Type *SBPTy = PointerType::get(Type::Int8Ty);
MallocFunc = M.getNamedFunction("malloc");
FreeFunc = M.getNamedFunction("free");
if (MallocFunc == 0) {
// Prototype malloc as "void* malloc(...)", because we don't know in
// doInitialization whether size_t is int or long.
FunctionType *FT = FunctionType::get(SBPTy,std::vector<const Type*>(),true);
MallocFunc = M.getOrInsertFunction("malloc", FT);
}
if (FreeFunc == 0)
FreeFunc = M.getOrInsertFunction("free" , Type::VoidTy, SBPTy, (Type *)0);
const Type *BPTy = PointerType::get(Type::Int8Ty);
// Prototype malloc as "char* malloc(...)", because we don't know in
// doInitialization whether size_t is int or long.
FunctionType *FT = FunctionType::get(BPTy, std::vector<const Type*>(), true);
MallocFunc = M.getOrInsertFunction("malloc", FT);
FreeFunc = M.getOrInsertFunction("free" , Type::VoidTy, BPTy, (Type *)0);
return true;
}
@ -145,27 +138,8 @@ bool LowerAllocations::runOnBasicBlock(BasicBlock &BB) {
}
}
const FunctionType *MallocFTy = MallocFunc->getFunctionType();
std::vector<Value*> MallocArgs;
if (MallocFTy->getNumParams() > 0 || MallocFTy->isVarArg()) {
if (MallocFTy->isVarArg()) {
if (MallocArg->getType() != IntPtrTy)
MallocArg = CastInst::createIntegerCast(MallocArg, IntPtrTy,
false /*ZExt*/, "", I);
} else if (MallocFTy->getNumParams() > 0 &&
MallocFTy->getParamType(0) != Type::Int32Ty)
MallocArg = CastInst::createIntegerCast(
MallocArg, MallocFTy->getParamType(0), false/*ZExt*/, "",I);
MallocArgs.push_back(MallocArg);
}
// If malloc is prototyped to take extra arguments, pass nulls.
for (unsigned i = 1; i < MallocFTy->getNumParams(); ++i)
MallocArgs.push_back(Constant::getNullValue(MallocFTy->getParamType(i)));
// Create the call to Malloc...
CallInst *MCall = new CallInst(MallocFunc, MallocArgs, "", I);
// Create the call to Malloc.
CallInst *MCall = new CallInst(MallocFunc, MallocArg, "", I);
MCall->setTailCall();
// Create a cast instruction to convert to the right type...
@ -181,23 +155,11 @@ bool LowerAllocations::runOnBasicBlock(BasicBlock &BB) {
Changed = true;
++NumLowered;
} else if (FreeInst *FI = dyn_cast<FreeInst>(I)) {
const FunctionType *FreeFTy = FreeFunc->getFunctionType();
std::vector<Value*> FreeArgs;
if (FreeFTy->getNumParams() > 0 || FreeFTy->isVarArg()) {
Value *MCast = FI->getOperand(0);
if (FreeFTy->getNumParams() > 0 &&
FreeFTy->getParamType(0) != MCast->getType())
MCast = new BitCastInst(MCast, FreeFTy->getParamType(0), "", I);
FreeArgs.push_back(MCast);
}
// If malloc is prototyped to take extra arguments, pass nulls.
for (unsigned i = 1; i < FreeFTy->getNumParams(); ++i)
FreeArgs.push_back(Constant::getNullValue(FreeFTy->getParamType(i)));
Value *PtrCast = new BitCastInst(FI->getOperand(0),
PointerType::get(Type::Int8Ty), "", I);
// Insert a call to the free function...
(new CallInst(FreeFunc, FreeArgs, "", I))->setTailCall();
(new CallInst(FreeFunc, PtrCast, "", I))->setTailCall();
// Delete the old free instruction
I = --BBIL.erase(I);

66
lib/Transforms/Utils/LowerInvoke.cpp
View File

@ -60,15 +60,15 @@ static cl::opt<bool> ExpensiveEHSupport("enable-correct-eh-support",
namespace {
class VISIBILITY_HIDDEN LowerInvoke : public FunctionPass {
// Used for both models.
Function *WriteFn;
Function *AbortFn;
Constant *WriteFn;
Constant *AbortFn;
Value *AbortMessage;
unsigned AbortMessageLength;
// Used for expensive EH support.
const Type *JBLinkTy;
GlobalVariable *JBListHead;
Function *SetJmpFn, *LongJmpFn;
Constant *SetJmpFn, *LongJmpFn;
// We peek in TLI to grab the target's jmp_buf size and alignment
const TargetLowering *TLI;
@ -87,7 +87,7 @@ namespace {
}
private:
void createAbortMessage();
void createAbortMessage(Module *M);
void writeAbortMessage(Instruction *IB);
bool insertCheapEHSupport(Function &F);
void splitLiveRangesLiveAcrossInvokes(std::vector<InvokeInst*> &Invokes);
@ -148,29 +148,12 @@ bool LowerInvoke::doInitialization(Module &M) {
// We need the 'write' and 'abort' functions for both models.
AbortFn = M.getOrInsertFunction("abort", Type::VoidTy, (Type *)0);
// Unfortunately, 'write' can end up being prototyped in several different
// ways. If the user defines a three (or more) operand function named 'write'
// we will use their prototype. We _do not_ want to insert another instance
// of a write prototype, because we don't know that the funcresolve pass will
// run after us. If there is a definition of a write function, but it's not
// suitable for our uses, we just don't emit write calls. If there is no
// write prototype at all, we just add one.
if (Function *WF = M.getNamedFunction("write")) {
if (WF->getFunctionType()->getNumParams() > 3 ||
WF->getFunctionType()->isVarArg())
WriteFn = WF;
else
WriteFn = 0;
} else {
WriteFn = M.getOrInsertFunction("write", Type::VoidTy, Type::Int32Ty,
VoidPtrTy, Type::Int32Ty, (Type *)0);
}
WriteFn = M.getOrInsertFunction("write", Type::VoidTy, Type::Int32Ty,
VoidPtrTy, Type::Int32Ty, (Type *)0);
return true;
}
void LowerInvoke::createAbortMessage() {
Module &M = *WriteFn->getParent();
void LowerInvoke::createAbortMessage(Module *M) {
if (ExpensiveEHSupport) {
// The abort message for expensive EH support tells the user that the
// program 'unwound' without an 'invoke' instruction.
@ -180,7 +163,7 @@ void LowerInvoke::createAbortMessage() {
GlobalVariable *MsgGV = new GlobalVariable(Msg->getType(), true,
GlobalValue::InternalLinkage,
Msg, "abortmsg", &M);
Msg, "abortmsg", M);
std::vector<Constant*> GEPIdx(2, Constant::getNullValue(Type::Int32Ty));
AbortMessage = ConstantExpr::getGetElementPtr(MsgGV, GEPIdx);
} else {
@ -193,7 +176,7 @@ void LowerInvoke::createAbortMessage() {
GlobalVariable *MsgGV = new GlobalVariable(Msg->getType(), true,
GlobalValue::InternalLinkage,
Msg, "abortmsg", &M);
Msg, "abortmsg", M);
std::vector<Constant*> GEPIdx(2, Constant::getNullValue(Type::Int32Ty));
AbortMessage = ConstantExpr::getGetElementPtr(MsgGV, GEPIdx);
}
@ -201,30 +184,15 @@ void LowerInvoke::createAbortMessage() {
void LowerInvoke::writeAbortMessage(Instruction *IB) {
if (WriteFn) {
if (AbortMessage == 0) createAbortMessage();
if (AbortMessage == 0)
createAbortMessage(IB->getParent()->getParent()->getParent());
// These are the arguments we WANT...
std::vector<Value*> Args;
Args.push_back(ConstantInt::get(Type::Int32Ty, 2));
Args.push_back(AbortMessage);
Args.push_back(ConstantInt::get(Type::Int32Ty, AbortMessageLength));
// If the actual declaration of write disagrees, insert casts as
// appropriate.
const FunctionType *FT = WriteFn->getFunctionType();
unsigned NumArgs = FT->getNumParams();
for (unsigned i = 0; i != 3; ++i)
if (i < NumArgs && FT->getParamType(i) != Args[i]->getType())
if (Args[i]->getType()->isInteger())
Args[i] = ConstantExpr::getIntegerCast(cast<Constant>(Args[i]),
FT->getParamType(i), true);
else
Args[i] = ConstantExpr::getBitCast(cast<Constant>(Args[i]),
FT->getParamType(i));
(new CallInst(WriteFn, Args, "", IB))->setTailCall();
}
// These are the arguments we WANT...
std::vector<Value*> Args;
Args.push_back(ConstantInt::get(Type::Int32Ty, 2));
Args.push_back(AbortMessage);
Args.push_back(ConstantInt::get(Type::Int32Ty, AbortMessageLength));
(new CallInst(WriteFn, Args, "", IB))->setTailCall();
}
bool LowerInvoke::insertCheapEHSupport(Function &F) {