Bug 151509

Summary:	media-libs/jpeg-mmx fails with gcc41 with march=i686
Product:	Gentoo Linux	Reporter:	Tyler Montbriand <tyler>
Component:	[OLD] Library	Assignee:	SpanKY <vapier>
Status:	RESOLVED WONTFIX
Severity:	normal	CC:	graphics+disabled
Priority:	High
Version:	2006.1
Hardware:	x86
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Tyler Montbriand 2006-10-15 14:41:32 UTC

Similar to Bug 119851, a combination of gcc41 and -march=i686 causes compiler
errors in jcdctmgr.c, "suffix or operands invalid for `movq'", for EVERY instance
of movq in that file.  This patch fixes the problem.  It may only be needed for
i686.
http://burningsmell.org/patch/jpeg-mmx-0.1.6-i686.patch

Comment 1 Ryan Hill (RETIRED) gentoo-dev

2006-10-15 15:59:59 UTC

i can't reproduce this.  can i get emerge --info?

Comment 2 Ryan Hill (RETIRED) gentoo-dev

2006-10-15 16:06:14 UTC

okay, got it.  only occurs at -O0.

Comment 3 Ryan Hill (RETIRED) gentoo-dev

2006-10-15 16:11:46 UTC

vapier, are you still maintaining this?  if so do you prefer patching the header or forcing >=-O1?

Comment 4 SpanKY gentoo-dev

2006-10-15 19:34:29 UTC

forcing flags is wrong ... you cant assume that -O1+ will always work

using an X operand is wrong ... you need a constraint that all of these instructions can use as a source ("m" will probably work fine):
movd
movq
packssdw
packsswb
packuswb
paddb
paddd
paddsb
paddsw
paddusb
paddusw
paddw
pand
pandn
pavgb
pavgw
pcmpeqb
pcmpeqd
pcmpeqw
pcmpgtb
pcmpgtd
pcmpgtw
pmaddwd
pmaxsw
pmaxub
pminsw
pminub
pmulhuw
pmulhw
pmullw
por
psadbw
pslld
psllq
psllw
psrad
psraw
psrld
psrlq
psrlw
psubb
psubd
psubsb
psubsw
psubusb
psubusw
psubw
punpckhbw
punpckhdq
punpckhwd
punpcklbw
punpckldq
punpcklwd
pxor

Comment 5 SpanKY gentoo-dev

2006-11-04 23:25:08 UTC

jpeg-mmx is dead