On 11/19/23 20:32, Xi Ruoyao wrote:
On Sun, 2023-11-19 at 19:52 -0700, Jeff Law wrote:
/* snip */
Unfortunately, I get some ICE building stage 1 libgcc with this patch on
loongarch64-linux-gnu:
during RTL pass: ext_dce
../../../gcc/libgcc/libgcc2.c: In function ‘__absvdi2’:
../../../gcc/libgcc/libgcc2.c:224:1: internal compiler error: Segmentation fault
224 | }
| ^
0x120baa477 crash_signal
../../gcc/gcc/toplev.cc:316
0x1216aeeb4 ext_dce_process_sets
../../gcc/gcc/ext-dce.cc:128
0x1216afbaf ext_dce_process_bb
../../gcc/gcc/ext-dce.cc:647
0x1216afbaf ext_dce
../../gcc/gcc/ext-dce.cc:802
0x1216afbaf execute
../../gcc/gcc/ext-dce.cc:868
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
I think I know what's going on here.
The gzip-compressed preprocessed file attached, in case you still need
it.
Thanks. I'll double check with it in a bit. Basically there was a
late cleanup that could result in walking down the wrong part of a chunk
of RTL. My tester is about 30-60 minutes from being able to start a run
with the fix.
Jeff
