#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
-#include "llvm/Target/TargetLibraryInfo.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
using namespace llvm;
/// 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 DataLayout *TD,
+Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout &DL,
const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::strlen))
return nullptr;
AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Constant *StrLen = M->getOrInsertFunction("strlen",
- AttributeSet::get(M->getContext(),
- AS),
- TD->getIntPtrType(Context),
- B.getInt8PtrTy(),
- nullptr);
+ 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<Function>(StrLen->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
/// 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 *TD, const TargetLibraryInfo *TLI) {
+ const DataLayout &DL, const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::strnlen))
return nullptr;
AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Constant *StrNLen = M->getOrInsertFunction("strnlen",
- AttributeSet::get(M->getContext(),
- AS),
- TD->getIntPtrType(Context),
- B.getInt8PtrTy(),
- TD->getIntPtrType(Context),
- nullptr);
- CallInst *CI = B.CreateCall2(StrNLen, CastToCStr(Ptr, B), MaxLen, "strnlen");
+ 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<Function>(StrNLen->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
/// 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 DataLayout *TD, const TargetLibraryInfo *TLI) {
+ const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::strchr))
return nullptr;
AttributeSet::get(M->getContext(),
AS),
I8Ptr, I8Ptr, I32Ty, nullptr);
- CallInst *CI = B.CreateCall2(StrChr, CastToCStr(Ptr, B),
- ConstantInt::get(I32Ty, C), "strchr");
+ CallInst *CI = B.CreateCall(
+ StrChr, {CastToCStr(Ptr, B), ConstantInt::get(I32Ty, C)}, "strchr");
if (const Function *F = dyn_cast<Function>(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 *TD,
- const TargetLibraryInfo *TLI) {
+Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B,
+ const DataLayout &DL, const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::strncmp))
return nullptr;
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(),
- TD->getIntPtrType(Context), nullptr);
- CallInst *CI = B.CreateCall3(StrNCmp, CastToCStr(Ptr1, B),
- CastToCStr(Ptr2, B), Len, "strncmp");
+ 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<Function>(StrNCmp->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
/// 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 DataLayout *TD, const TargetLibraryInfo *TLI,
- StringRef Name) {
+ const TargetLibraryInfo *TLI, StringRef Name) {
if (!TLI->has(LibFunc::strcpy))
return nullptr;
Value *StrCpy = M->getOrInsertFunction(Name,
AttributeSet::get(M->getContext(), AS),
I8Ptr, I8Ptr, I8Ptr, nullptr);
- CallInst *CI = B.CreateCall2(StrCpy, CastToCStr(Dst, B), CastToCStr(Src, B),
- Name);
+ CallInst *CI =
+ B.CreateCall(StrCpy, {CastToCStr(Dst, B), CastToCStr(Src, B)}, Name);
if (const Function *F = dyn_cast<Function>(StrCpy->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
return CI;
/// 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 DataLayout *TD,
+Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B,
const TargetLibraryInfo *TLI, StringRef Name) {
if (!TLI->has(LibFunc::strncpy))
return nullptr;
AS),
I8Ptr, I8Ptr, I8Ptr,
Len->getType(), nullptr);
- CallInst *CI = B.CreateCall3(StrNCpy, CastToCStr(Dst, B), CastToCStr(Src, B),
- Len, "strncpy");
+ CallInst *CI = B.CreateCall(
+ StrNCpy, {CastToCStr(Dst, B), CastToCStr(Src, B), Len}, "strncpy");
if (const Function *F = dyn_cast<Function>(StrNCpy->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
return CI;
/// 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 DataLayout *TD,
+ IRBuilder<> &B, const DataLayout &DL,
const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::memcpy_chk))
return nullptr;
AS = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex,
Attribute::NoUnwind);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Value *MemCpy = M->getOrInsertFunction("__memcpy_chk",
- AttributeSet::get(M->getContext(), AS),
- B.getInt8PtrTy(),
- B.getInt8PtrTy(),
- B.getInt8PtrTy(),
- TD->getIntPtrType(Context),
- TD->getIntPtrType(Context), nullptr);
+ 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<Function>(MemCpy->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
return CI;
/// 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 DataLayout *TD,
- const TargetLibraryInfo *TLI) {
+Value *llvm::EmitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B,
+ const DataLayout &DL, const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::memchr))
return nullptr;
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",
- AttributeSet::get(M->getContext(), AS),
- B.getInt8PtrTy(),
- B.getInt8PtrTy(),
- B.getInt32Ty(),
- TD->getIntPtrType(Context),
- nullptr);
- 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<Function>(MemChr->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
}
/// EmitMemCmp - Emit a call to the memcmp function.
-Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2,
- Value *Len, IRBuilder<> &B, const DataLayout *TD,
- const TargetLibraryInfo *TLI) {
+Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B,
+ const DataLayout &DL, const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::memcmp))
return nullptr;
AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Value *MemCmp = M->getOrInsertFunction("memcmp",
- AttributeSet::get(M->getContext(), AS),
- B.getInt32Ty(),
- B.getInt8PtrTy(),
- B.getInt8PtrTy(),
- TD->getIntPtrType(Context), nullptr);
- 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<Function>(MemCmp->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
Module *M = B.GetInsertBlock()->getParent()->getParent();
Value *Callee = M->getOrInsertFunction(Name, Op1->getType(),
Op1->getType(), Op2->getType(), nullptr);
- CallInst *CI = B.CreateCall2(Callee, Op1, Op2, Name);
+ CallInst *CI = B.CreateCall(Callee, {Op1, Op2}, Name);
CI->setAttributes(Attrs);
if (const Function *F = dyn_cast<Function>(Callee->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
/// EmitPutChar - Emit a call to the putchar function. This assumes that Char
/// is an integer.
-Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, const DataLayout *TD,
+Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B,
const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::putchar))
return nullptr;
/// EmitPutS - Emit a call to the puts function. This assumes that Str is
/// some pointer.
-Value *llvm::EmitPutS(Value *Str, IRBuilder<> &B, const DataLayout *TD,
+Value *llvm::EmitPutS(Value *Str, IRBuilder<> &B,
const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::puts))
return nullptr;
/// EmitFPutC - Emit a call to the fputc function. This assumes that Char is
/// an integer and File is a pointer to FILE.
Value *llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B,
- const DataLayout *TD, const TargetLibraryInfo *TLI) {
+ const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::fputc))
return nullptr;
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<Function>(F->stripPointerCasts()))
CI->setCallingConv(Fn->getCallingConv());
/// EmitFPutS - Emit a call to the puts function. Str is required to be a
/// pointer and File is a pointer to FILE.
Value *llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B,
- const DataLayout *TD, const TargetLibraryInfo *TLI) {
+ const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::fputs))
return nullptr;
F = M->getOrInsertFunction(FPutsName, B.getInt32Ty(),
B.getInt8PtrTy(),
File->getType(), nullptr);
- CallInst *CI = B.CreateCall2(F, CastToCStr(Str, B), File, "fputs");
+ CallInst *CI = B.CreateCall(F, {CastToCStr(Str, B), File}, "fputs");
if (const Function *Fn = dyn_cast<Function>(F->stripPointerCasts()))
CI->setCallingConv(Fn->getCallingConv());
/// 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.
-Value *llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File,
- IRBuilder<> &B, const DataLayout *TD,
- const TargetLibraryInfo *TLI) {
+Value *llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B,
+ const DataLayout &DL, const TargetLibraryInfo *TLI) {
if (!TLI->has(LibFunc::fwrite))
return nullptr;
StringRef FWriteName = TLI->getName(LibFunc::fwrite);
Constant *F;
if (File->getType()->isPointerTy())
- F = M->getOrInsertFunction(FWriteName,
- AttributeSet::get(M->getContext(), AS),
- TD->getIntPtrType(Context),
- B.getInt8PtrTy(),
- TD->getIntPtrType(Context),
- TD->getIntPtrType(Context),
- File->getType(), nullptr);
+ 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(FWriteName, TD->getIntPtrType(Context),
- B.getInt8PtrTy(),
- TD->getIntPtrType(Context),
- TD->getIntPtrType(Context),
- File->getType(), nullptr);
- 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<Function>(F->stripPointerCasts()))
CI->setCallingConv(Fn->getCallingConv());
return CI;
}
-
-SimplifyFortifiedLibCalls::~SimplifyFortifiedLibCalls() { }
-
-bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const DataLayout *TD,
- const TargetLibraryInfo *TLI) {
- // We really need DataLayout for later.
- if (!TD) return false;
-
- this->CI = CI;
- Function *Callee = CI->getCalledFunction();
- StringRef Name = Callee->getName();
- FunctionType *FT = Callee->getFunctionType();
- LLVMContext &Context = CI->getParent()->getContext();
- IRBuilder<> B(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(3, 2, false)) {
- B.CreateMemCpy(CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2), 1);
- replaceCall(CI->getArgOperand(0));
- 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(3, 2, false)) {
- B.CreateMemMove(CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2), 1);
- replaceCall(CI->getArgOperand(0));
- 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(3, 2, false)) {
- Value *Val = B.CreateIntCast(CI->getArgOperand(1), B.getInt8Ty(),
- false);
- B.CreateMemSet(CI->getArgOperand(0), Val, CI->getArgOperand(2), 1);
- replaceCall(CI->getArgOperand(0));
- 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(2, 1, true)) {
- Value *Ret = EmitStrCpy(CI->getArgOperand(0), CI->getArgOperand(1), B, TD,
- TLI, Name.substr(2, 6));
- if (!Ret)
- return false;
- 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(3, 2, false)) {
- Value *Ret = EmitStrNCpy(CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2), B, TD, TLI,
- Name.substr(2, 7));
- if (!Ret)
- return false;
- replaceCall(Ret);
- return true;
- }
- return false;
- }
-
- if (Name == "__strcat_chk") {
- return false;
- }
-
- if (Name == "__strncat_chk") {
- return false;
- }
-
- return false;
-}
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