http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51001
Yufeng Zhang <yufeng at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-10-31
CC| |yufeng at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |4.9.0
--- Comment #1 from Yufeng Zhang <yufeng at gcc dot gnu.org> ---
I can confirm that the similar issue exists using the trunk compiler with -O2
-mcpu=cortex-a15
foo:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
@ link register save eliminated.
mov r3, #53248
mvn r2, #85
mov r1, r3
strb r2, [r3, #2755]
.L3:
ldrb r3, [r1, #2754] @ zero_extendqisi2
mov r2, #53248
tst r3, #128
beq .L3
mvn r3, #68
mov r1, r2
strb r3, [r2, #2755]
.L5:
ldrb r3, [r1, #2754] @ zero_extendqisi2
tst r3, #128
beq .L5
bx lr
The -fdump-tree-optimized dump looks OK.
