gcc 2.95.1 / haifa / powerpc / internal error

[Adrian Cox]

The haifa scheduler on PowerPC fails when compiling render.c from povray
with -O2 -funroll-loops. This is on a Debian potato PowerPC system.

~/tmp/povray/povray-3.0.20.orig/source/pvm/LINUXPPC> cc -O2
-funroll-loops -DPOV_INIT_DIR=\"/etc\" -c -g -DPVM -DUNIX
-DCOMPILER_VER=\".`uname`.cc\" -I. -I.. -I../.. -I../../unix 
-I../../zlib -I/usr/X11R6/include ../../render.c -o render.o -v
--save-temps
Reading specs from /usr/lib/gcc-lib/powerpc-linux/2.95.1/specs
gcc version 2.95.1 19990816 (release)
 /usr/lib/gcc-lib/powerpc-linux/2.95.1/cpp -lang-c -v -I. -I.. -I../..
-I../../unix -I../../zlib -I/usr/X11R6/include -D__GNUC__=2
-D__GNUC_MINOR__=95 -DPPC -D__ELF__ -Dpowerpc -D__PPC__ -D__ELF__
-D__powerpc__ -D__PPC -D__powerpc -Acpu(powerpc) -Amachine(powerpc)
-D__CHAR_UNSIGNED__ -D__OPTIMIZE__ -g -D_CALL_SYSV -D_BIG_ENDIAN
-D__BIG_ENDIAN__ -Amachine(bigendian) -D_ARCH_PPC -D__unix__ -D__linux__
-Dunix -Dlinux -Asystem(unix) -Asystem(posix) -DPOV_INIT_DIR="/etc"
-DPVM -DUNIX -DCOMPILER_VER=".Linux.cc" ../../render.c render.i
GNU CPP version 2.95.1 19990816 (release) (PowerPC GNU/Linux)
#include "..." search starts here:
#include <...> search starts here:
 .
 ..
 ../..
 ../../unix
 ../../zlib
 /usr/X11R6/include
 /usr/local/include
 /usr/lib/gcc-lib/powerpc-linux/2.95.1/include
 /usr/include
End of search list.
The following default directories have been omitted from the search
path:
 /usr/lib/gcc-lib/powerpc-linux/2.95.1/../../../../include/g++-3
 /usr/lib/gcc-lib/powerpc-linux/2.95.1/../../../../powerpc-linux/include
End of omitted list.
 /usr/lib/gcc-lib/powerpc-linux/2.95.1/cc1 render.i -quiet -dumpbase
render.c -g -O2 -version -funroll-loops -o render.s
GNU C version 2.95.1 19990816 (release) (powerpc-linux) compiled by GNU
C version 2.95.1 19990816 (release).
../../render.c: In function `Initialize_Renderer':
../../render.c:642: Internal compiler error:
../../render.c:642: Internal compiler error in `schedule_region', at
haifa-sched.c:7777
Please submit a full bug report.
See <URL: http://www.gnu.org/software/gcc/faq.html#bugreport > for
instructions.

- Adrian Cox, AG Electronics
render.i.gz

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