Just for fun, if anyone wants to help.
So I have this little code:
...And I want to optimize it a little further, but it's kind of out of my hands right now.Code:Stuff::CArray<char> Array; double max_ = pow(10.0, 8.6); DWORD dwTick1 = GetTickCount(); int max = (int)max_; for (int i = 0; i < max; i++) Array[i] = 12; //12345678; DWORD dwTick2 = GetTickCount(); DWORD dwTick3 = dwTick2 - dwTick1; cout << "Took " << dwTick3 << " ms total.\n";
It's blazingly fast and according to the profiler, the loop is the culprit.
If anyone have any pointers on how to optimize the loop in assembly? It's blazingly fast considering what it's actually doing, so I just wanted to see how much more performance can be gained through this code, to decrease the execution time from 1.6s to lower!Code:Address Line Trace Source Code Bytes Total % Timer samples 0x401de6 cmp edi,[esp+14h] 3B 7C 24 14 0x401dea jnz $+15h (0x401dff) 75 13 5.76 218 0x401dec lea esp,[esp+00h] 8D 64 24 00 0x401df0 lea esi,[esp+14h] 8D 74 24 14 0x401df4 call $-00000c24h (0x1004011d0) E8 D7 F3 FF FF 0x401df9 cmp [esp+14h],edi 39 7C 24 14 0x401dfd jbe $-0dh (0x100401df0) 76 F1 0x401dff mov ecx,[esp+24h] 8B 4C 24 24 0x401e03 mov [ecx+edi],0ch C6 04 39 0C 5.61 212 0x401e07 inc edi 47 11.03 417 0x401e08 cmp edi,ebx 3B FB 0.03 1 0x401e0a jl $-24h (0x100401de6) 7C DA 5.24 198 1 file, 1 function, 1 line, 12 instructions, Summary: 1046 samples, 100.00% of module samples, 27.66% of total samples
What it does is a dynamic array that allocates more memory on-the-fly as you insert elements. Considering it's actually adding 10 ^ 8.6 bytes of memory, I say it's pretty efficient!
Pretty please? ^_^
I'm not an assembly expert.