X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTransforms%2FUtils%2FBuildLibCalls.cpp;h=8aa7b2a65ba9c0e80772e77ad39d186031aa3237;hb=7e5269ed6d085f51fa5ffe2c4569cab47d0392b4;hp=767fa3a0a6b3e3cee974b071c99071f1846128db;hpb=551754c4958086cc6910da7c950f2875e212f5cf;p=oota-llvm.git diff --git a/lib/Transforms/Utils/BuildLibCalls.cpp b/lib/Transforms/Utils/BuildLibCalls.cpp index 767fa3a0a6b..8aa7b2a65ba 100644 --- a/lib/Transforms/Utils/BuildLibCalls.cpp +++ b/lib/Transforms/Utils/BuildLibCalls.cpp @@ -12,36 +12,42 @@ //===----------------------------------------------------------------------===// #include "llvm/Transforms/Utils/BuildLibCalls.h" -#include "llvm/Type.h" -#include "llvm/Constants.h" -#include "llvm/Function.h" -#include "llvm/Module.h" -#include "llvm/Support/IRBuilder.h" -#include "llvm/Target/TargetData.h" -#include "llvm/LLVMContext.h" -#include "llvm/Intrinsics.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/IR/Constants.h" +#include "llvm/IR/DataLayout.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/IRBuilder.h" +#include "llvm/IR/Intrinsics.h" +#include "llvm/IR/LLVMContext.h" +#include "llvm/IR/Module.h" +#include "llvm/IR/Type.h" +#include "llvm/Analysis/TargetLibraryInfo.h" using namespace llvm; /// CastToCStr - Return V if it is an i8*, otherwise cast it to i8*. Value *llvm::CastToCStr(Value *V, IRBuilder<> &B) { - return B.CreateBitCast(V, B.getInt8PtrTy(), "cstr"); + unsigned AS = V->getType()->getPointerAddressSpace(); + return B.CreateBitCast(V, B.getInt8PtrTy(AS), "cstr"); } /// EmitStrLen - Emit a call to the strlen function to the builder, for the /// specified pointer. This always returns an integer value of size intptr_t. -Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const TargetData *TD) { +Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout &DL, + const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::strlen)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[2]; - AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(~0u, Attribute::ReadOnly | - Attribute::NoUnwind); + AttributeSet AS[2]; + AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); + Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; + AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Constant *StrLen = M->getOrInsertFunction("strlen", AttrListPtr::get(AWI, 2), - TD->getIntPtrType(Context), - B.getInt8PtrTy(), - NULL); + Constant *StrLen = M->getOrInsertFunction( + "strlen", AttributeSet::get(M->getContext(), AS), + DL.getIntPtrType(Context), B.getInt8PtrTy(), nullptr); CallInst *CI = B.CreateCall(StrLen, CastToCStr(Ptr, B), "strlen"); if (const Function *F = dyn_cast(StrLen->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); @@ -49,39 +55,102 @@ Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const TargetData *TD) { return CI; } +/// EmitStrNLen - Emit a call to the strnlen function to the builder, for the +/// specified pointer. Ptr is required to be some pointer type, MaxLen must +/// be of size_t type, and the return value has 'intptr_t' type. +Value *llvm::EmitStrNLen(Value *Ptr, Value *MaxLen, IRBuilder<> &B, + const DataLayout &DL, const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::strnlen)) + return nullptr; + + Module *M = B.GetInsertBlock()->getParent()->getParent(); + AttributeSet AS[2]; + AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); + Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; + AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); + + LLVMContext &Context = B.GetInsertBlock()->getContext(); + Constant *StrNLen = + M->getOrInsertFunction("strnlen", AttributeSet::get(M->getContext(), AS), + DL.getIntPtrType(Context), B.getInt8PtrTy(), + DL.getIntPtrType(Context), nullptr); + CallInst *CI = B.CreateCall(StrNLen, {CastToCStr(Ptr, B), MaxLen}, "strnlen"); + if (const Function *F = dyn_cast(StrNLen->stripPointerCasts())) + CI->setCallingConv(F->getCallingConv()); + + return CI; +} + /// EmitStrChr - Emit a call to the strchr function to the builder, for the /// specified pointer and character. Ptr is required to be some pointer type, /// and the return value has 'i8*' type. Value *llvm::EmitStrChr(Value *Ptr, char C, IRBuilder<> &B, - const TargetData *TD) { + const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::strchr)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI = - AttributeWithIndex::get(~0u, Attribute::ReadOnly | Attribute::NoUnwind); - - const Type *I8Ptr = B.getInt8PtrTy(); - const Type *I32Ty = B.getInt32Ty(); - Constant *StrChr = M->getOrInsertFunction("strchr", AttrListPtr::get(&AWI, 1), - I8Ptr, I8Ptr, I32Ty, NULL); - CallInst *CI = B.CreateCall2(StrChr, CastToCStr(Ptr, B), - ConstantInt::get(I32Ty, C), "strchr"); + Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; + AttributeSet AS = + AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); + + Type *I8Ptr = B.getInt8PtrTy(); + Type *I32Ty = B.getInt32Ty(); + Constant *StrChr = M->getOrInsertFunction("strchr", + AttributeSet::get(M->getContext(), + AS), + I8Ptr, I8Ptr, I32Ty, nullptr); + CallInst *CI = B.CreateCall( + StrChr, {CastToCStr(Ptr, B), ConstantInt::get(I32Ty, C)}, "strchr"); if (const Function *F = dyn_cast(StrChr->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } +/// EmitStrNCmp - Emit a call to the strncmp function to the builder. +Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, + const DataLayout &DL, const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::strncmp)) + return nullptr; + + Module *M = B.GetInsertBlock()->getParent()->getParent(); + AttributeSet AS[3]; + AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); + Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; + AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); + + LLVMContext &Context = B.GetInsertBlock()->getContext(); + Value *StrNCmp = M->getOrInsertFunction( + "strncmp", AttributeSet::get(M->getContext(), AS), B.getInt32Ty(), + B.getInt8PtrTy(), B.getInt8PtrTy(), DL.getIntPtrType(Context), nullptr); + CallInst *CI = B.CreateCall( + StrNCmp, {CastToCStr(Ptr1, B), CastToCStr(Ptr2, B), Len}, "strncmp"); + + if (const Function *F = dyn_cast(StrNCmp->stripPointerCasts())) + CI->setCallingConv(F->getCallingConv()); + + return CI; +} + /// EmitStrCpy - Emit a call to the strcpy function to the builder, for the /// specified pointer arguments. Value *llvm::EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B, - const TargetData *TD, StringRef Name) { + const TargetLibraryInfo *TLI, StringRef Name) { + if (!TLI->has(LibFunc::strcpy)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[2]; - AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind); - const Type *I8Ptr = B.getInt8PtrTy(); - Value *StrCpy = M->getOrInsertFunction(Name, AttrListPtr::get(AWI, 2), - I8Ptr, I8Ptr, I8Ptr, NULL); - CallInst *CI = B.CreateCall2(StrCpy, CastToCStr(Dst, B), CastToCStr(Src, B), - Name); + AttributeSet AS[2]; + AS[0] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, + Attribute::NoUnwind); + Type *I8Ptr = B.getInt8PtrTy(); + Value *StrCpy = M->getOrInsertFunction(Name, + AttributeSet::get(M->getContext(), AS), + I8Ptr, I8Ptr, I8Ptr, nullptr); + CallInst *CI = + B.CreateCall(StrCpy, {CastToCStr(Dst, B), CastToCStr(Src, B)}, Name); if (const Function *F = dyn_cast(StrCpy->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; @@ -89,93 +158,71 @@ Value *llvm::EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B, /// EmitStrNCpy - Emit a call to the strncpy function to the builder, for the /// specified pointer arguments. -Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len, - IRBuilder<> &B, const TargetData *TD, StringRef Name) { +Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B, + const TargetLibraryInfo *TLI, StringRef Name) { + if (!TLI->has(LibFunc::strncpy)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[2]; - AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind); - const Type *I8Ptr = B.getInt8PtrTy(); - Value *StrNCpy = M->getOrInsertFunction(Name, AttrListPtr::get(AWI, 2), + AttributeSet AS[2]; + AS[0] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, + Attribute::NoUnwind); + Type *I8Ptr = B.getInt8PtrTy(); + Value *StrNCpy = M->getOrInsertFunction(Name, + AttributeSet::get(M->getContext(), + AS), I8Ptr, I8Ptr, I8Ptr, - Len->getType(), NULL); - CallInst *CI = B.CreateCall3(StrNCpy, CastToCStr(Dst, B), CastToCStr(Src, B), - Len, "strncpy"); + Len->getType(), nullptr); + CallInst *CI = B.CreateCall( + StrNCpy, {CastToCStr(Dst, B), CastToCStr(Src, B), Len}, "strncpy"); if (const Function *F = dyn_cast(StrNCpy->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } - -/// EmitMemCpy - Emit a call to the memcpy function to the builder. This always -/// expects that Len has type 'intptr_t' and Dst/Src are pointers. -Value *llvm::EmitMemCpy(Value *Dst, Value *Src, Value *Len, unsigned Align, - bool isVolatile, IRBuilder<> &B, const TargetData *TD) { - Module *M = B.GetInsertBlock()->getParent()->getParent(); - const Type *ArgTys[3] = { Dst->getType(), Src->getType(), Len->getType() }; - Value *MemCpy = Intrinsic::getDeclaration(M, Intrinsic::memcpy, ArgTys, 3); - Dst = CastToCStr(Dst, B); - Src = CastToCStr(Src, B); - return B.CreateCall5(MemCpy, Dst, Src, Len, - ConstantInt::get(B.getInt32Ty(), Align), - ConstantInt::get(B.getInt1Ty(), isVolatile)); -} - /// EmitMemCpyChk - Emit a call to the __memcpy_chk function to the builder. /// This expects that the Len and ObjSize have type 'intptr_t' and Dst/Src /// are pointers. Value *llvm::EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize, - IRBuilder<> &B, const TargetData *TD) { + IRBuilder<> &B, const DataLayout &DL, + const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::memcpy_chk)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI; - AWI = AttributeWithIndex::get(~0u, Attribute::NoUnwind); + AttributeSet AS; + AS = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, + Attribute::NoUnwind); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Value *MemCpy = M->getOrInsertFunction("__memcpy_chk", - AttrListPtr::get(&AWI, 1), - B.getInt8PtrTy(), - B.getInt8PtrTy(), - B.getInt8PtrTy(), - TD->getIntPtrType(Context), - TD->getIntPtrType(Context), NULL); + Value *MemCpy = M->getOrInsertFunction( + "__memcpy_chk", AttributeSet::get(M->getContext(), AS), B.getInt8PtrTy(), + B.getInt8PtrTy(), B.getInt8PtrTy(), DL.getIntPtrType(Context), + DL.getIntPtrType(Context), nullptr); Dst = CastToCStr(Dst, B); Src = CastToCStr(Src, B); - CallInst *CI = B.CreateCall4(MemCpy, Dst, Src, Len, ObjSize); + CallInst *CI = B.CreateCall(MemCpy, {Dst, Src, Len, ObjSize}); if (const Function *F = dyn_cast(MemCpy->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } -/// EmitMemMove - Emit a call to the memmove function to the builder. This -/// always expects that the size has type 'intptr_t' and Dst/Src are pointers. -Value *llvm::EmitMemMove(Value *Dst, Value *Src, Value *Len, unsigned Align, - bool isVolatile, IRBuilder<> &B, const TargetData *TD) { - Module *M = B.GetInsertBlock()->getParent()->getParent(); - LLVMContext &Context = B.GetInsertBlock()->getContext(); - const Type *ArgTys[3] = { Dst->getType(), Src->getType(), - TD->getIntPtrType(Context) }; - Value *MemMove = Intrinsic::getDeclaration(M, Intrinsic::memmove, ArgTys, 3); - Dst = CastToCStr(Dst, B); - Src = CastToCStr(Src, B); - Value *A = ConstantInt::get(B.getInt32Ty(), Align); - Value *Vol = ConstantInt::get(B.getInt1Ty(), isVolatile); - return B.CreateCall5(MemMove, Dst, Src, Len, A, Vol); -} - /// EmitMemChr - Emit a call to the memchr function. This assumes that Ptr is /// a pointer, Val is an i32 value, and Len is an 'intptr_t' value. -Value *llvm::EmitMemChr(Value *Ptr, Value *Val, - Value *Len, IRBuilder<> &B, const TargetData *TD) { +Value *llvm::EmitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B, + const DataLayout &DL, const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::memchr)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI; - AWI = AttributeWithIndex::get(~0u, Attribute::ReadOnly | Attribute::NoUnwind); + AttributeSet AS; + Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; + AS = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Value *MemChr = M->getOrInsertFunction("memchr", AttrListPtr::get(&AWI, 1), - B.getInt8PtrTy(), - B.getInt8PtrTy(), - B.getInt32Ty(), - TD->getIntPtrType(Context), - NULL); - CallInst *CI = B.CreateCall3(MemChr, CastToCStr(Ptr, B), Val, Len, "memchr"); + Value *MemChr = M->getOrInsertFunction( + "memchr", AttributeSet::get(M->getContext(), AS), B.getInt8PtrTy(), + B.getInt8PtrTy(), B.getInt32Ty(), DL.getIntPtrType(Context), nullptr); + CallInst *CI = B.CreateCall(MemChr, {CastToCStr(Ptr, B), Val, Len}, "memchr"); if (const Function *F = dyn_cast(MemChr->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); @@ -184,23 +231,24 @@ Value *llvm::EmitMemChr(Value *Ptr, Value *Val, } /// EmitMemCmp - Emit a call to the memcmp function. -Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2, - Value *Len, IRBuilder<> &B, const TargetData *TD) { +Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, + const DataLayout &DL, const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::memcmp)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[3]; - AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(2, Attribute::NoCapture); - AWI[2] = AttributeWithIndex::get(~0u, Attribute::ReadOnly | - Attribute::NoUnwind); + AttributeSet AS[3]; + AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); + Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; + AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Value *MemCmp = M->getOrInsertFunction("memcmp", AttrListPtr::get(AWI, 3), - B.getInt32Ty(), - B.getInt8PtrTy(), - B.getInt8PtrTy(), - TD->getIntPtrType(Context), NULL); - CallInst *CI = B.CreateCall3(MemCmp, CastToCStr(Ptr1, B), CastToCStr(Ptr2, B), - Len, "memcmp"); + Value *MemCmp = M->getOrInsertFunction( + "memcmp", AttributeSet::get(M->getContext(), AS), B.getInt32Ty(), + B.getInt8PtrTy(), B.getInt8PtrTy(), DL.getIntPtrType(Context), nullptr); + CallInst *CI = B.CreateCall( + MemCmp, {CastToCStr(Ptr1, B), CastToCStr(Ptr2, B), Len}, "memcmp"); if (const Function *F = dyn_cast(MemCmp->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); @@ -208,41 +256,33 @@ Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2, return CI; } -/// EmitMemSet - Emit a call to the memset function -Value *llvm::EmitMemSet(Value *Dst, Value *Val, Value *Len, bool isVolatile, - IRBuilder<> &B, const TargetData *TD) { - Module *M = B.GetInsertBlock()->getParent()->getParent(); - Intrinsic::ID IID = Intrinsic::memset; - const Type *Tys[2] = { Dst->getType(), Len->getType() }; - Value *MemSet = Intrinsic::getDeclaration(M, IID, Tys, 2); - Value *Align = ConstantInt::get(B.getInt32Ty(), 1); - Value *Vol = ConstantInt::get(B.getInt1Ty(), isVolatile); - return B.CreateCall5(MemSet, CastToCStr(Dst, B), Val, Len, Align, Vol); +/// Append a suffix to the function name according to the type of 'Op'. +static void AppendTypeSuffix(Value *Op, StringRef &Name, SmallString<20> &NameBuffer) { + if (!Op->getType()->isDoubleTy()) { + NameBuffer += Name; + + if (Op->getType()->isFloatTy()) + NameBuffer += 'f'; + else + NameBuffer += 'l'; + + Name = NameBuffer; + } + return; } /// EmitUnaryFloatFnCall - Emit a call to the unary function named 'Name' (e.g. /// 'floor'). This function is known to take a single of type matching 'Op' and /// returns one value with the same type. If 'Op' is a long double, 'l' is /// added as the suffix of name, if 'Op' is a float, we add a 'f' suffix. -Value *llvm::EmitUnaryFloatFnCall(Value *Op, const char *Name, - IRBuilder<> &B, const AttrListPtr &Attrs) { - char NameBuffer[20]; - if (!Op->getType()->isDoubleTy()) { - // If we need to add a suffix, copy into NameBuffer. - unsigned NameLen = strlen(Name); - assert(NameLen < sizeof(NameBuffer)-2); - memcpy(NameBuffer, Name, NameLen); - if (Op->getType()->isFloatTy()) - NameBuffer[NameLen] = 'f'; // floorf - else - NameBuffer[NameLen] = 'l'; // floorl - NameBuffer[NameLen+1] = 0; - Name = NameBuffer; - } +Value *llvm::EmitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B, + const AttributeSet &Attrs) { + SmallString<20> NameBuffer; + AppendTypeSuffix(Op, Name, NameBuffer); Module *M = B.GetInsertBlock()->getParent()->getParent(); Value *Callee = M->getOrInsertFunction(Name, Op->getType(), - Op->getType(), NULL); + Op->getType(), nullptr); CallInst *CI = B.CreateCall(Callee, Op, Name); CI->setAttributes(Attrs); if (const Function *F = dyn_cast(Callee->stripPointerCasts())) @@ -251,12 +291,37 @@ Value *llvm::EmitUnaryFloatFnCall(Value *Op, const char *Name, return CI; } +/// EmitBinaryFloatFnCall - Emit a call to the binary function named 'Name' +/// (e.g. 'fmin'). This function is known to take type matching 'Op1' and 'Op2' +/// and return one value with the same type. If 'Op1/Op2' are long double, 'l' +/// is added as the suffix of name, if 'Op1/Op2' is a float, we add a 'f' +/// suffix. +Value *llvm::EmitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name, + IRBuilder<> &B, const AttributeSet &Attrs) { + SmallString<20> NameBuffer; + AppendTypeSuffix(Op1, Name, NameBuffer); + + Module *M = B.GetInsertBlock()->getParent()->getParent(); + Value *Callee = M->getOrInsertFunction(Name, Op1->getType(), + Op1->getType(), Op2->getType(), nullptr); + CallInst *CI = B.CreateCall(Callee, {Op1, Op2}, Name); + CI->setAttributes(Attrs); + if (const Function *F = dyn_cast(Callee->stripPointerCasts())) + CI->setCallingConv(F->getCallingConv()); + + return CI; +} + /// EmitPutChar - Emit a call to the putchar function. This assumes that Char /// is an integer. -Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, const TargetData *TD) { +Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, + const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::putchar)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); Value *PutChar = M->getOrInsertFunction("putchar", B.getInt32Ty(), - B.getInt32Ty(), NULL); + B.getInt32Ty(), nullptr); CallInst *CI = B.CreateCall(PutChar, B.CreateIntCast(Char, B.getInt32Ty(), @@ -271,231 +336,124 @@ Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, const TargetData *TD) { /// EmitPutS - Emit a call to the puts function. This assumes that Str is /// some pointer. -void llvm::EmitPutS(Value *Str, IRBuilder<> &B, const TargetData *TD) { +Value *llvm::EmitPutS(Value *Str, IRBuilder<> &B, + const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::puts)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[2]; - AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind); + AttributeSet AS[2]; + AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, + Attribute::NoUnwind); - Value *PutS = M->getOrInsertFunction("puts", AttrListPtr::get(AWI, 2), + Value *PutS = M->getOrInsertFunction("puts", + AttributeSet::get(M->getContext(), AS), B.getInt32Ty(), B.getInt8PtrTy(), - NULL); + nullptr); CallInst *CI = B.CreateCall(PutS, CastToCStr(Str, B), "puts"); if (const Function *F = dyn_cast(PutS->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); - + return CI; } /// EmitFPutC - Emit a call to the fputc function. This assumes that Char is /// an integer and File is a pointer to FILE. -void llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B, - const TargetData *TD) { +Value *llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B, + const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::fputc)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[2]; - AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind); + AttributeSet AS[2]; + AS[0] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, + Attribute::NoUnwind); Constant *F; if (File->getType()->isPointerTy()) - F = M->getOrInsertFunction("fputc", AttrListPtr::get(AWI, 2), + F = M->getOrInsertFunction("fputc", + AttributeSet::get(M->getContext(), AS), B.getInt32Ty(), B.getInt32Ty(), File->getType(), - NULL); + nullptr); else F = M->getOrInsertFunction("fputc", B.getInt32Ty(), B.getInt32Ty(), - File->getType(), NULL); + File->getType(), nullptr); Char = B.CreateIntCast(Char, B.getInt32Ty(), /*isSigned*/true, "chari"); - CallInst *CI = B.CreateCall2(F, Char, File, "fputc"); + CallInst *CI = B.CreateCall(F, {Char, File}, "fputc"); if (const Function *Fn = dyn_cast(F->stripPointerCasts())) CI->setCallingConv(Fn->getCallingConv()); + return CI; } /// EmitFPutS - Emit a call to the puts function. Str is required to be a /// pointer and File is a pointer to FILE. -void llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B, - const TargetData *TD) { +Value *llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B, + const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::fputs)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[3]; - AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(2, Attribute::NoCapture); - AWI[2] = AttributeWithIndex::get(~0u, Attribute::NoUnwind); + AttributeSet AS[3]; + AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); + AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, + Attribute::NoUnwind); + StringRef FPutsName = TLI->getName(LibFunc::fputs); Constant *F; if (File->getType()->isPointerTy()) - F = M->getOrInsertFunction("fputs", AttrListPtr::get(AWI, 3), + F = M->getOrInsertFunction(FPutsName, + AttributeSet::get(M->getContext(), AS), B.getInt32Ty(), B.getInt8PtrTy(), - File->getType(), NULL); + File->getType(), nullptr); else - F = M->getOrInsertFunction("fputs", B.getInt32Ty(), + F = M->getOrInsertFunction(FPutsName, B.getInt32Ty(), B.getInt8PtrTy(), - File->getType(), NULL); - CallInst *CI = B.CreateCall2(F, CastToCStr(Str, B), File, "fputs"); + File->getType(), nullptr); + CallInst *CI = B.CreateCall(F, {CastToCStr(Str, B), File}, "fputs"); if (const Function *Fn = dyn_cast(F->stripPointerCasts())) CI->setCallingConv(Fn->getCallingConv()); + return CI; } /// EmitFWrite - Emit a call to the fwrite function. This assumes that Ptr is /// a pointer, Size is an 'intptr_t', and File is a pointer to FILE. -void llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File, - IRBuilder<> &B, const TargetData *TD) { +Value *llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B, + const DataLayout &DL, const TargetLibraryInfo *TLI) { + if (!TLI->has(LibFunc::fwrite)) + return nullptr; + Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeWithIndex AWI[3]; - AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture); - AWI[1] = AttributeWithIndex::get(4, Attribute::NoCapture); - AWI[2] = AttributeWithIndex::get(~0u, Attribute::NoUnwind); + AttributeSet AS[3]; + AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); + AS[1] = AttributeSet::get(M->getContext(), 4, Attribute::NoCapture); + AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, + Attribute::NoUnwind); LLVMContext &Context = B.GetInsertBlock()->getContext(); + StringRef FWriteName = TLI->getName(LibFunc::fwrite); Constant *F; if (File->getType()->isPointerTy()) - F = M->getOrInsertFunction("fwrite", AttrListPtr::get(AWI, 3), - TD->getIntPtrType(Context), - B.getInt8PtrTy(), - TD->getIntPtrType(Context), - TD->getIntPtrType(Context), - File->getType(), NULL); + F = M->getOrInsertFunction( + FWriteName, AttributeSet::get(M->getContext(), AS), + DL.getIntPtrType(Context), B.getInt8PtrTy(), DL.getIntPtrType(Context), + DL.getIntPtrType(Context), File->getType(), nullptr); else - F = M->getOrInsertFunction("fwrite", TD->getIntPtrType(Context), - B.getInt8PtrTy(), - TD->getIntPtrType(Context), - TD->getIntPtrType(Context), - File->getType(), NULL); - CallInst *CI = B.CreateCall4(F, CastToCStr(Ptr, B), Size, - ConstantInt::get(TD->getIntPtrType(Context), 1), File); + F = M->getOrInsertFunction(FWriteName, DL.getIntPtrType(Context), + B.getInt8PtrTy(), DL.getIntPtrType(Context), + DL.getIntPtrType(Context), File->getType(), + nullptr); + CallInst *CI = + B.CreateCall(F, {CastToCStr(Ptr, B), Size, + ConstantInt::get(DL.getIntPtrType(Context), 1), File}); if (const Function *Fn = dyn_cast(F->stripPointerCasts())) CI->setCallingConv(Fn->getCallingConv()); -} - -SimplifyFortifiedLibCalls::~SimplifyFortifiedLibCalls() { } - -bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) { - // We really need TargetData for later. - if (!TD) return false; - - this->CI = CI; - Function *Callee = CI->getCalledFunction(); - StringRef Name = Callee->getName(); - const FunctionType *FT = Callee->getFunctionType(); - BasicBlock *BB = CI->getParent(); - LLVMContext &Context = CI->getParent()->getContext(); - IRBuilder<> B(Context); - - // Set the builder to the instruction after the call. - B.SetInsertPoint(BB, CI); - - if (Name == "__memcpy_chk") { - // Check if this has the right signature. - if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) || - !FT->getParamType(0)->isPointerTy() || - !FT->getParamType(1)->isPointerTy() || - FT->getParamType(2) != TD->getIntPtrType(Context) || - FT->getParamType(3) != TD->getIntPtrType(Context)) - return false; - - if (isFoldable(4, 3, false)) { - EmitMemCpy(CI->getOperand(1), CI->getOperand(2), CI->getOperand(3), - 1, false, B, TD); - replaceCall(CI->getOperand(1)); - return true; - } - return false; - } - - // Should be similar to memcpy. - if (Name == "__mempcpy_chk") { - return false; - } - - if (Name == "__memmove_chk") { - // Check if this has the right signature. - if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) || - !FT->getParamType(0)->isPointerTy() || - !FT->getParamType(1)->isPointerTy() || - FT->getParamType(2) != TD->getIntPtrType(Context) || - FT->getParamType(3) != TD->getIntPtrType(Context)) - return false; - - if (isFoldable(4, 3, false)) { - EmitMemMove(CI->getOperand(1), CI->getOperand(2), CI->getOperand(3), - 1, false, B, TD); - replaceCall(CI->getOperand(1)); - return true; - } - return false; - } - - if (Name == "__memset_chk") { - // Check if this has the right signature. - if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) || - !FT->getParamType(0)->isPointerTy() || - !FT->getParamType(1)->isIntegerTy() || - FT->getParamType(2) != TD->getIntPtrType(Context) || - FT->getParamType(3) != TD->getIntPtrType(Context)) - return false; - - if (isFoldable(4, 3, false)) { - Value *Val = B.CreateIntCast(CI->getOperand(2), B.getInt8Ty(), - false); - EmitMemSet(CI->getOperand(1), Val, CI->getOperand(3), false, B, TD); - replaceCall(CI->getOperand(1)); - return true; - } - return false; - } - - if (Name == "__strcpy_chk" || Name == "__stpcpy_chk") { - // Check if this has the right signature. - if (FT->getNumParams() != 3 || - FT->getReturnType() != FT->getParamType(0) || - FT->getParamType(0) != FT->getParamType(1) || - FT->getParamType(0) != Type::getInt8PtrTy(Context) || - FT->getParamType(2) != TD->getIntPtrType(Context)) - return 0; - - - // If a) we don't have any length information, or b) we know this will - // fit then just lower to a plain st[rp]cpy. Otherwise we'll keep our - // st[rp]cpy_chk call which may fail at runtime if the size is too long. - // TODO: It might be nice to get a maximum length out of the possible - // string lengths for varying. - if (isFoldable(3, 2, true)) { - Value *Ret = EmitStrCpy(CI->getOperand(1), CI->getOperand(2), B, TD, - Name.substr(2, 6)); - replaceCall(Ret); - return true; - } - return false; - } - - if (Name == "__strncpy_chk" || Name == "__stpncpy_chk") { - // Check if this has the right signature. - if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) || - FT->getParamType(0) != FT->getParamType(1) || - FT->getParamType(0) != Type::getInt8PtrTy(Context) || - !FT->getParamType(2)->isIntegerTy() || - FT->getParamType(3) != TD->getIntPtrType(Context)) - return false; - - if (isFoldable(4, 3, false)) { - Value *Ret = EmitStrNCpy(CI->getOperand(1), CI->getOperand(2), - CI->getOperand(3), B, TD, Name.substr(2, 7)); - replaceCall(Ret); - return true; - } - return false; - } - - if (Name == "__strcat_chk") { - return false; - } - - if (Name == "__strncat_chk") { - return false; - } - - return false; + return CI; }