POV-Ray : Newsgroups : povray.unix : povbench : Re: povbench Server Time
28 Jul 2024 16:31:36 EDT (-0400)
  Re: povbench  
From: Vadim Sytnikov
Date: 13 Jun 2002 04:37:49
Message: <3d0859dd@news.povray.org>
"Thorsten Froehlich" <tho### [at] trfde> wrote:
> This is under Linux, of course.  It may just be a library issue that
doesn't
> exist under Windows.  gcc surely is not such a good compiler...

... but not such a bad compiler, either. In general, VC surpasses GCC in
terms of code quality (especially fp), of course, but consider this sample
code (I stumble upon such things, at times, as I actively use both gcc and
VC++), gcc 2.95.3-5 vs. MSC/C++ 12.00.8168 (VS 6.0):

----- test.c:

typedef struct { short a; char b, c; } D;

D func( void )
{
  D d = { 1, 2, 3 };

  return d;
}

----- test.bat:

@echo off
 gcc -c -S -O2 -fomit-frame-pointer test.c
 cl -c -FA -Ox -nologo test.c

----- test.s:

_func:
 movl $50462721,%eax
 ret

----- test.asm (_d$ = -4):

_func PROC NEAR
 push ecx
 mov WORD PTR _d$[esp+4], 1
 mov BYTE PTR _d$[esp+6], 2
 mov BYTE PTR _d$[esp+7], 3
 mov eax, DWORD PTR _d$[esp+4]
 pop ecx
 ret 0


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