[llvm] r253514 - [BuildLibCalls] EmitStrNLen() is dead code. Garbage collect.

[Davide Italiano via llvm-commits]

Author: davide
Date: Wed Nov 18 16:29:38 2015
New Revision: 253514

URL: http://llvm.org/viewvc/llvm-project?rev=253514&view=rev
Log:
[BuildLibCalls] EmitStrNLen() is dead code. Garbage collect.

Modified:
    llvm/trunk/lib/Transforms/Utils/BuildLibCalls.cpp

Modified: llvm/trunk/lib/Transforms/Utils/BuildLibCalls.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/BuildLibCalls.cpp?rev=253514&r1=253513&r2=253514&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Utils/BuildLibCalls.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/BuildLibCalls.cpp Wed Nov 18 16:29:38 2015
@@ -55,32 +55,6 @@ Value *llvm::EmitStrLen(Value *Ptr, IRBu
   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<Function>(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.