http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55175
Bug #: 55175
Summary: i386/sfp-exceptions.c:52:7: error: impossible
constraint in 'asm'
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: corse...@gcc.gnu.org
Created attachment 28594
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28594
*.i of the file raising the breakdown
Bootstrapping gcc-trunk (xgcc (GCC) 4.8.0 20120927 (experimental)) fails with
this error for --target=i386-rtems4.11:
...
/users/rtems/src/rtems.org/rtems-gcc/BUILD-i386/./gcc/xgcc
-B/users/rtems/src/rtems.org/rtems-gcc/BUILD-i386/./gcc/ -nostdinc
-B/users/rtems/src/rtems.org/rtems-gcc/BUILD-i386/i386-rtems4.11/soft-float/newlib/
-isystem
/users/rtems/src/rtems.org/rtems-gcc/BUILD-i386/i386-rtems4.11/soft-float/newlib/targ-include
-isystem /users/rtems/src/rtems.org/rtems-gcc/newlib/libc/include
-B/opt/rtems-4.11/i386-rtems4.11/bin/ -B/opt/rtems-4.11/i386-rtems4.11/lib/
-isystem /opt/rtems-4.11/i386-rtems4.11/include -isystem
/opt/rtems-4.11/i386-rtems4.11/sys-include -msoft-float -g -O2 -Wall -O2
-I../../../../libgcc/../newlib/libc/sys/rtems/include -g -O2 -Wall -DIN_GCC
-DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector
-Dinhibit_libc -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -o sfp-exceptions.o -MT
sfp-exceptions.o -MD -MP -MF sfp-exceptions.dep -c
../../../../libgcc/config/i386/sfp-exceptions.c -fvisibility=hidden
-DHIDE_EXPORTS
../../../../libgcc/config/i386/sfp-exceptions.c: In function
'__sfp_handle_exceptions':
../../../../libgcc/config/i386/sfp-exceptions.c:52:7: error: impossible
constraint in 'asm'
asm volatile ("fdiv\t{%y0, %0|%0, %y0}" : "+t" (f));
^
../../../../libgcc/config/i386/sfp-exceptions.c:62:7: error: impossible
constraint in 'asm'
asm volatile ("fdivs\t%1" : "+t" (f) : "m" (g));
^
make: *** [sfp-exceptions.o] Error 1
