gcc-4.6-20100703 fails during stage 2 of bootstrap on ARM:
/home/mikpe/gcc-4.6-20100703/gcc/config/arm/arm.c: In function
'arm_attr_length_move_neon':
/home/mikpe/gcc-4.6-20100703/gcc/config/arm/arm.c:12868:7: error: variable
'regno' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors
make[3]: *** [arm.o] Error 1
make[3]: Leaving directory `/home/mikpe/objdir46/gcc'
make[2]: *** [all-stage2-gcc] Error 2
make[2]: Leaving directory `/home/mikpe/objdir46'
make[1]: *** [stage2-bubble] Error 2
make[1]: Leaving directory `/home/mikpe/objdir46'
make: *** [bootstrap] Error 2
Given the location of the error the cause is obviously Jie Zhang's recent patch
which added arm_attr_length_move_neon, namely r161776.
I'll attach a preliminary patch momentarily.
--
Summary: [4.6 regression] ARM bootstrap failure: regno set but
unused in arm_attr_length_move_neon
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mikpe at it dot uu dot se
GCC build triplet: armv5tel-unknown-linux-gnueabi
GCC host triplet: armv5tel-unknown-linux-gnueabi
GCC target triplet: armv5tel-unknown-linux-gnueabi
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44820
