Module Name: src
Committed By: rin
Date: Fri Apr 16 02:26:43 UTC 2021
Modified Files:
src/external/gpl3/gcc/dist/gcc/config/rs6000: rs6000.c
Log Message:
Fix regression introduced to GCC10, where it wrongly recognizes 32-bit
processors as POWER9 if -misel flag is specified.
rs6000_machine_from_flags() assumes ISEL instructions are supported only
for POWER9 and successors. However, ISEL is also implemented for 32-bit
booke processors.
Since our kernel for booke is compiled with -misel, this regression
completely breaks it.
As a fix, check whether CPU is 64-bit capable or not, before checking
-misel flag.
The problem has been reported as 100108 to upstream:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100108
OK mrg
To generate a diff of this commit:
cvs rdiff -u -r1.25 -r1.26 \
src/external/gpl3/gcc/dist/gcc/config/rs6000/rs6000.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
