pkg/49600: macppc (powerpc) gcc 4.8.4 internal compiler error on multimedia/libvpx

[jdbaker%mylinuxisp.com@localhost]

>Number:         49600
>Category:       pkg
>Synopsis:       macppc (powerpc) gcc 4.8.4 internal compiler error on multimedia/libvpx
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jan 24 01:35:00 +0000 2015
>Originator:     John D. Baker
>Release:        NetBSD/macppc-7.99.4, pkgsrc-2014Q4
>Organization:
>Environment:
NetBSD sawtooth.technoskunk.fur 7.99.4 NetBSD 7.99.4 (GENERIC_LOWRES) #3: Thu Jan 22 15:23:27 CST 2015  sysop%verthandi.technoskunk.fur@localhost:/d0/build/current/obj/macppc/sys/arch/macppc/compile/GENERIC_LOWRES macppc

$ gcc --version
gcc (nb1 20141012) 4.8.4

>Description:
Building "multimedia/libvpx" on macppc (all powerpc?) incurs an
internal compiler error as follows:

[...]
    [CC] vp9/encoder/vp9_variance_c.c.o
libtool: compile:  gcc -O2 -maltivec -O3 -fPIC -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Wall -Wdeclaration-after-statement -Wdisabled-optimization -Wpointer-arith -Wtype-limits -Wcast-qual -Wvla -Wimplicit-function-declaration -Wuninitialized -Wunused-variable -Wunused-but-set-variable -Wno-unused-function -I. -I/d0/build/pkgsrc/multimedia/libvpx/work/libvpx-1.3.0 -c vp9/encoder/vp9_variance_c.c  -fPIC -DPIC -o vp9/encoder/.libs/vp9_variance_c.c.o
rs6000_secondary_reload_inner:17027, type = load
(parallel [
        (set (reg:V16QI 78 1)
            (mem:V16QI (and:SI (reg/v/f:SI 65 lr [orig:1251 second_pred ] [1251])
                    (const_int -16 [0xfffffffffffffff0])) [0 MEM[(const __uint8_t *)second_pred_17(D) & 4294967280B]+0 S16 A128]))
        (clobber (reg:SI 31 31))
    ])
vp9/encoder/vp9_variance_c.c: In function 'vp9_sub_pixel_avg_variance8x16_c':
vp9/encoder/vp9_variance_c.c:1004:1: internal compiler error: in rs6000_secondary_reload_fail, at config/rs6000/rs6000.c:16818
 }
 ^
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://www.NetBSD.org/support/send-pr.html> for instructions.
Makefile:128: recipe for target 'vp9/encoder/vp9_variance_c.c.o' failed
gmake[1]: *** [vp9/encoder/vp9_variance_c.c.o] Error 1
Makefile:17: recipe for target '.DEFAULT' failed
gmake: *** [.DEFAULT] Error 2
*** Error code 2

Stop.
make[1]: stopped in /x/pkgsrc/multimedia/libvpx


Submitted as category "pkg" in case some compiler option changes can
work around the problem.
>How-To-Repeat:
Attempt to build "multimedia/libvpx" on a macppc-current (any powerpc
port?) system.
>Fix: