faster splitter
Chris via Digitalmars-d
digitalmars-d at puremagic.com
Wed May 25 03:28:47 PDT 2016
On Tuesday, 24 May 2016 at 22:01:17 UTC, qznc wrote:
> On Tuesday, 24 May 2016 at 19:47:52 UTC, qznc wrote:
>
> I discovered radare2. While it is actually a debugger (like
> gdb), it includes a nice disassembler. Example view, which
> shows the loop calling std.algorithm.find repeatedly:
>
> | 0x00402e08, 0 | nop [rax+rax+0x0]
> .--> 0x00402e10, 0 | mov rdx, [rbx]
> || 0x00402e13 0 | mov rcx, [rbx+0x8]
> || 0x00402e17 0 | mov rdi, r15
> || 0x00402e1a 0 | mov rsi, r12
> || 0x00402e1d 0 | call 0x409160 ; 4 =
> sym._D3std9algorithm9searching34__T4fin
> || 0x00402e22 0 | mov rcx, [rbx]
> || 0x00402e25 0 | sub rcx, rax
> || 0x00402e28, 0 | mov [rbx+0x20], rcx
> || 0x00402e2c, 0 | dec ebp
> `==< 0x00402e2e 0 | jnz 0x402e10 ; 5 =
> 0x00402e10
> | 0x00402e30, 0 | lea r15, [rsp]
>
> Note the ASCII arrow on the left! Objdump should do that. :)
Any suggestions how we can make find more efficient?
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