[4.8 regression] ICE in expand_asm_operands, at stmt.c:910

[Matthias Klose]

seen with trunk 195917, works with 4.7 branch, works with Linaro 4.7 branch,
buildings without -O doesn't show the issue.

$ gcc -c -marm -mfpu=neon -O1 -c dxa.i
In file included from
/scratch/packages/tmp/4.8/libav-0.8.5/libavutil/intreadwrite.h:60:0,
                 from
/scratch/packages/tmp/4.8/libav-0.8.5/libavformat/dxa.c:22:
/scratch/packages/tmp/4.8/libav-0.8.5/libavutil/arm/intreadwrite.h: In function
'dxa_read_packet':
/scratch/packages/tmp/4.8/libav-0.8.5/libavutil/arm/intreadwrite.h:45:5:
internal compiler error: in expand_asm_operands, at stmt.c:910
     __asm__ ("ldr %0, %1" : "=r"(v) : "m"(*(const uint32_t *)p));
     ^
Please submit a full bug report,
with preprocessed source if appropriate.

[Doko-v (doko-v)]

Created attachment 29527
preprocessed source

seen with trunk 195917, works with 4.7 branch, fails with Linaro branch, buildings without -O doesn't show the issue.

$ gcc -c -marm -mfpu=neon -O1 -c dxa.i
In file included from /scratch/packages/tmp/4.8/libav-0.8.5/libavutil/intreadwrite.h:60:0,
                 from /scratch/packages/tmp/4.8/libav-0.8.5/libavformat/dxa.c:22:
/scratch/packages/tmp/4.8/libav-0.8.5/libavutil/arm/intreadwrite.h: In function 'dxa_read_packet':
/scratch/packages/tmp/4.8/libav-0.8.5/libavutil/arm/intreadwrite.h:45:5: internal compiler error: in expand_asm_operands, at stmt.c:910
     __asm__ ("ldr %0, %1" : "=r"(v) : "m"(*(const uint32_t *)p));
     ^
Please submit a full bug report,
with preprocessed source if appropriate.

[Pinskia (pinskia)]

AV_RN32(buf + 5))

I bet http://gcc.gnu.org/ml/gcc-patches/2013-02/msg00965.html fixes this issue too.

[Jakub-gcc (jakub-gcc)]

Yes, it does, just verified that.

*** This bug has been marked as a duplicate of bug 56405 ***

[Matthias Klose (doko)]

fixed in 4.8