https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120019
Bug ID: 120019
Summary: [16 regression] PR 111657 change broke Solaris/x86
bootstrap
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: ubizjak at gmail dot com
Target Milestone: ---
Target: i386-pc-solaris2.11
Between 20250428 and 20250429, Solaris/x86 bootstrap with the native as got
broken compiling libgcc:
/var/gcc/regression/master/11.4-gcc/build/./gcc/xgcc
-B/var/gcc/regression/master/11.4-gcc/build/./gcc/
-B/vol/gcc/i386-pc-solaris2.11/bin/ -B/vol/gcc/i386-pc-solaris2.11/lib/amd64/
-isystem /vol/gcc/i386-pc-solaris2.11/include -isystem
/vol/gcc/i386-pc-solaris2.11/sys-include -fno-checking -g -O2 -m64 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-error=narrowing -Wwrite-strings -Wcast-qual
-Wno-format -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include -fpic -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -fpic -I. -I. -I../../.././gcc
-I/vol/gcc/src/hg/master/local/libgcc -I/vol/gcc/src/hg/master/local/libgcc/.
-I/vol/gcc/src/hg/master/local/libgcc/../gcc
-I/vol/gcc/src/hg/master/local/libgcc/../include -DHAVE_CC_TLS -o
unwind-dw2.o -MT unwind-dw2.o -MD -MP -MF unwind-dw2.dep -fexceptions -c
/vol/gcc/src/hg/master/local/libgcc/unwind-dw2.c -fvisibility=hidden
-DHIDE_EXPORTS
Assembler: unwind-dw2.c
"/var/tmp//ccaYKMya.s", line 210 : Invalid instruction argument
Near line: " rep movsq (%rsi), (%rdi)"
"/var/tmp//ccaYKMya.s", line 11414 : Invalid instruction argument
Near line: " rep movsl (%rsi), (%rdi)"
and similarly for the 32-bit libgcc.
While as can deal with the previous syntax (rep movsl), it apparently doesn't
grok the new form.
Bootstrap is fine when using gas, though.
