[Bug 599546] Faster read/write macros

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=599546
  GStreamer | gstreamer (core) | git

--- Comment #15 from Edward Hervey <bilboed at gmail.com> 2011-05-30 16:29:11 UTC ---
I just re-applied the patches against current git master to check if the
optimisation still works and it does.

CFLAGS = -march=native -pipe -g2 -O3 -DG_DISABLE_CAST_CHECKS
-DG_THREADS_MANDATORY

gcc (Gentoo 4.5.2 p1.0, pie-0.4.5) 4.5.2 // AMD Phenom(tm) II X6 1055T
Processor

gstpluginloader.c:641
  magic = GST_READ_UINT32_BE(out + 8);

before:
  movzbl   0x8(%r13),%eax
  movzbl   0x9(%r13),%ecx
  shl      $0x18,%eax
  shl      $0x10,%ecx
  or       %ecx,%eax
  movzbl   0xb(%r13),%ecx
  or       %ecx,%eax
  shl      $0x8,%ecx
  or       %ecx,%eax

after:
  mov      0x8(%r13),%edx
  bswap    %edx

-- 
Configure bugmail: https://bugzilla.gnome.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.