summaryrefslogtreecommitdiffstats
path: root/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp')
-rw-r--r--contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp188
1 files changed, 25 insertions, 163 deletions
diff --git a/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
index be00b695..322485d 100644
--- a/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
+++ b/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp
@@ -42,8 +42,7 @@ Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout *TD,
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,
- ArrayRef<Attribute::AttrKind>(AVs, 2));
+ AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
Constant *StrLen = M->getOrInsertFunction("strlen",
@@ -51,7 +50,7 @@ Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout *TD,
AS),
TD->getIntPtrType(Context),
B.getInt8PtrTy(),
- NULL);
+ nullptr);
CallInst *CI = B.CreateCall(StrLen, CastToCStr(Ptr, B), "strlen");
if (const Function *F = dyn_cast<Function>(StrLen->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
@@ -71,8 +70,7 @@ Value *llvm::EmitStrNLen(Value *Ptr, Value *MaxLen, IRBuilder<> &B,
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,
- ArrayRef<Attribute::AttrKind>(AVs, 2));
+ AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
Constant *StrNLen = M->getOrInsertFunction("strnlen",
@@ -81,7 +79,7 @@ Value *llvm::EmitStrNLen(Value *Ptr, Value *MaxLen, IRBuilder<> &B,
TD->getIntPtrType(Context),
B.getInt8PtrTy(),
TD->getIntPtrType(Context),
- NULL);
+ nullptr);
CallInst *CI = B.CreateCall2(StrNLen, CastToCStr(Ptr, B), MaxLen, "strnlen");
if (const Function *F = dyn_cast<Function>(StrNLen->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
@@ -100,15 +98,14 @@ Value *llvm::EmitStrChr(Value *Ptr, char C, IRBuilder<> &B,
Module *M = B.GetInsertBlock()->getParent()->getParent();
Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind };
AttributeSet AS =
- AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex,
- ArrayRef<Attribute::AttrKind>(AVs, 2));
+ 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, NULL);
+ I8Ptr, I8Ptr, I32Ty, nullptr);
CallInst *CI = B.CreateCall2(StrChr, CastToCStr(Ptr, B),
ConstantInt::get(I32Ty, C), "strchr");
if (const Function *F = dyn_cast<Function>(StrChr->stripPointerCasts()))
@@ -128,8 +125,7 @@ Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len,
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,
- ArrayRef<Attribute::AttrKind>(AVs, 2));
+ AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
Value *StrNCmp = M->getOrInsertFunction("strncmp",
@@ -138,7 +134,7 @@ Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len,
B.getInt32Ty(),
B.getInt8PtrTy(),
B.getInt8PtrTy(),
- TD->getIntPtrType(Context), NULL);
+ TD->getIntPtrType(Context), nullptr);
CallInst *CI = B.CreateCall3(StrNCmp, CastToCStr(Ptr1, B),
CastToCStr(Ptr2, B), Len, "strncmp");
@@ -164,7 +160,7 @@ Value *llvm::EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B,
Type *I8Ptr = B.getInt8PtrTy();
Value *StrCpy = M->getOrInsertFunction(Name,
AttributeSet::get(M->getContext(), AS),
- I8Ptr, I8Ptr, I8Ptr, NULL);
+ I8Ptr, I8Ptr, I8Ptr, nullptr);
CallInst *CI = B.CreateCall2(StrCpy, CastToCStr(Dst, B), CastToCStr(Src, B),
Name);
if (const Function *F = dyn_cast<Function>(StrCpy->stripPointerCasts()))
@@ -190,7 +186,7 @@ Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len,
AttributeSet::get(M->getContext(),
AS),
I8Ptr, I8Ptr, I8Ptr,
- Len->getType(), NULL);
+ Len->getType(), nullptr);
CallInst *CI = B.CreateCall3(StrNCpy, CastToCStr(Dst, B), CastToCStr(Src, B),
Len, "strncpy");
if (const Function *F = dyn_cast<Function>(StrNCpy->stripPointerCasts()))
@@ -218,7 +214,7 @@ Value *llvm::EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize,
B.getInt8PtrTy(),
B.getInt8PtrTy(),
TD->getIntPtrType(Context),
- TD->getIntPtrType(Context), NULL);
+ TD->getIntPtrType(Context), nullptr);
Dst = CastToCStr(Dst, B);
Src = CastToCStr(Src, B);
CallInst *CI = B.CreateCall4(MemCpy, Dst, Src, Len, ObjSize);
@@ -238,8 +234,7 @@ Value *llvm::EmitMemChr(Value *Ptr, Value *Val,
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeSet AS;
Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind };
- AS = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex,
- ArrayRef<Attribute::AttrKind>(AVs, 2));
+ AS = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
Value *MemChr = M->getOrInsertFunction("memchr",
AttributeSet::get(M->getContext(), AS),
@@ -247,7 +242,7 @@ Value *llvm::EmitMemChr(Value *Ptr, Value *Val,
B.getInt8PtrTy(),
B.getInt32Ty(),
TD->getIntPtrType(Context),
- NULL);
+ nullptr);
CallInst *CI = B.CreateCall3(MemChr, CastToCStr(Ptr, B), Val, Len, "memchr");
if (const Function *F = dyn_cast<Function>(MemChr->stripPointerCasts()))
@@ -268,8 +263,7 @@ Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2,
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,
- ArrayRef<Attribute::AttrKind>(AVs, 2));
+ AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs);
LLVMContext &Context = B.GetInsertBlock()->getContext();
Value *MemCmp = M->getOrInsertFunction("memcmp",
@@ -277,7 +271,7 @@ Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2,
B.getInt32Ty(),
B.getInt8PtrTy(),
B.getInt8PtrTy(),
- TD->getIntPtrType(Context), NULL);
+ TD->getIntPtrType(Context), nullptr);
CallInst *CI = B.CreateCall3(MemCmp, CastToCStr(Ptr1, B), CastToCStr(Ptr2, B),
Len, "memcmp");
@@ -313,7 +307,7 @@ Value *llvm::EmitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B,
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<Function>(Callee->stripPointerCasts()))
@@ -334,7 +328,7 @@ Value *llvm::EmitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name,
Module *M = B.GetInsertBlock()->getParent()->getParent();
Value *Callee = M->getOrInsertFunction(Name, Op1->getType(),
- Op1->getType(), Op2->getType(), NULL);
+ Op1->getType(), Op2->getType(), nullptr);
CallInst *CI = B.CreateCall2(Callee, Op1, Op2, Name);
CI->setAttributes(Attrs);
if (const Function *F = dyn_cast<Function>(Callee->stripPointerCasts()))
@@ -352,7 +346,7 @@ Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, const DataLayout *TD,
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(),
@@ -382,7 +376,7 @@ Value *llvm::EmitPutS(Value *Str, IRBuilder<> &B, const DataLayout *TD,
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<Function>(PutS->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
@@ -407,12 +401,12 @@ Value *llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B,
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");
@@ -442,11 +436,11 @@ Value *llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B,
AttributeSet::get(M->getContext(), AS),
B.getInt32Ty(),
B.getInt8PtrTy(),
- File->getType(), NULL);
+ File->getType(), nullptr);
else
F = M->getOrInsertFunction(FPutsName, B.getInt32Ty(),
B.getInt8PtrTy(),
- File->getType(), NULL);
+ File->getType(), nullptr);
CallInst *CI = B.CreateCall2(F, CastToCStr(Str, B), File, "fputs");
if (const Function *Fn = dyn_cast<Function>(F->stripPointerCasts()))
@@ -478,13 +472,13 @@ Value *llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File,
B.getInt8PtrTy(),
TD->getIntPtrType(Context),
TD->getIntPtrType(Context),
- File->getType(), NULL);
+ File->getType(), nullptr);
else
F = M->getOrInsertFunction(FWriteName, TD->getIntPtrType(Context),
B.getInt8PtrTy(),
TD->getIntPtrType(Context),
TD->getIntPtrType(Context),
- File->getType(), NULL);
+ File->getType(), nullptr);
CallInst *CI = B.CreateCall4(F, CastToCStr(Ptr, B), Size,
ConstantInt::get(TD->getIntPtrType(Context), 1), File);
@@ -492,135 +486,3 @@ Value *llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File,
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;
-}
OpenPOWER on IntegriCloud