CVS commit: src/external/gpl3/gcc/dist/gcc/config/rs6000

["Rin Okuyama" <rin%netbsd.org@localhost>]

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.