Segmentation fault in gcc 4.7-2013.08 while building WebP (part of Android) with -mtune=cortex-a9

[Bernhard Rosenkraenzer]

$ arm-linux-androideabi-gcc -o upsampling_neon.o -c upsampling_neon.i -march=armv7-a -mfloat-abi=softfp -mfpu=neon -O3 -frename-registers -mtune=cortex-a9 -mthumb -g
external/webp/src/dec/../dsp/upsampling_neon.c: In function 'UpsampleBgraLinePairNEON':
external/webp/src/dec/../dsp/upsampling_neon.c:264:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

[Bernhard Rosenkraenzer (berolinux)]

Attaching somewhat reduced test case, still too large, but not quite the 400 kB monstrosity it used to be.

[Charles Baylis (cbaylis)]

This crash was introduced in revno 115051 " Merge from FSF GCC 4.7.3 (svn branches/gcc-4_7-branch 195745)."

The crash does not occur in the FSF 4.7 branch at r195745 which the merge was taken from, so it is presumably caused by an interaction with an earlier change on the linaro-4.7 branch.

[Joshua Palmer (insane-palmer)]

-fschedule-insns -fschedule-insns2 is causing the issue. So anyone compiling with -o2 and up will run into this. I worked around it by
adding -fno-schedule-insns -fno-schedule-insns2 to LOCAL_CFLAGS in external/webp/src/dec/Android.mk

Just thought I would put this here for anyone else who lands here after running into this as this bug report was the only thing referencing it when I googled.

[Charles Baylis (cbaylis)]

GCC 4.7 is no longer maintained, and this bug has not been demonstrated on newer versions of GCC, so closing this.