Transforms/Utils/SimplifyLibCalls.cpp

163         uint64_t Len = GetStringLength(CI->getArgOperand(SizeArgOp));
166         if (Len == 0) return false;
167         return SizeCI->getZExtValue() >= Len;
276       uint64_t Len = GetStringLength(Src);
277       if (Len == 0) return 0;
284                       ConstantInt::get(TD->getIntPtrType(Context), Len),
323       uint64_t Len = GetStringLength(Src);
324       if (Len == 0) return 0;
330       Value *LenV = ConstantInt::get(TD->getIntPtrType(PT), Len);
333                                                    Len - 1));
386     uint64_t Len = GetStringLength(Src);
387     if (Len == 0) return 0;
388     --Len;  // Unbias length.
391     if (Len == 0)
397     return emitStrLenMemCpy(Src, Dst, Len, B);
400   Value *emitStrLenMemCpy(Value *Src, Value *Dst, uint64_t Len,
416                    ConstantInt::get(TD->getIntPtrType(*Context), Len + 1), 1);
435     uint64_t Len;
439       Len = LengthArg->getZExtValue();
451     if (SrcLen == 0 || Len == 0) return Dst;
457     if (Len < SrcLen) return 0;
484       uint64_t Len = GetStringLength(SrcStr);
485       if (Len == 0 || !FT->getParamType(1)->isIntegerTy(32))// memchr needs i32.
489                         ConstantInt::get(TD->getIntPtrType(*Context), Len),
660     uint64_t Len = GetStringLength(Src);
661     if (Len == 0) return 0;
666 		   ConstantInt::get(TD->getIntPtrType(*Context), Len), 1);
691     uint64_t Len = GetStringLength(Src);
692     if (Len == 0) return 0;
695     Value *LenV = ConstantInt::get(TD->getIntPtrType(PT), Len);
698                                                  Len - 1));
731     uint64_t Len;
733       Len = LengthArg->getZExtValue();
737     if (Len == 0) return Dst; // strncpy(x, y, 0) -> x
743     if (Len > SrcLen+1) return 0;
748                    ConstantInt::get(TD->getIntPtrType(PT), Len), 1);
766     if (uint64_t Len = GetStringLength(Src))
767       return ConstantInt::get(CI->getType(), Len-1);
972     uint64_t Len = LenC->getZExtValue();
974     if (Len == 0) // memcmp(s1,s2,0) -> 0
978     if (Len == 1) {
991       if (Len > LHSStr.size() || Len > RHSStr.size())
996       int Cmp = memcmp(LHSStr.data(), RHSStr.data(), Len);
1698       Value *Len = EmitStrLen(CI->getArgOperand(2), B, TD, TLI);
1699       if (!Len)
1701       Value *IncLen = B.CreateAdd(Len,
1702                                   ConstantInt::get(Len->getType(), 1),
1707       return B.CreateIntCast(Len, CI->getType(), false);
1872     uint64_t Len = GetStringLength(CI->getArgOperand(0));
1873     if (!Len) return 0;
1876                       ConstantInt::get(TD->getIntPtrType(*Context), Len-1),