------- Comment #1 from ramana at gcc dot gnu dot org 2009-09-16 07:08 -------
The problem occurs with 4.4.x branch r 151319. The problem is evident if you
have -march=armv5te or earlier, but not with -march=armv6 or later.
This is the code I get with armv6
foo:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
@ link register save eliminated.
mov r2, #0
orr r2, r2, r0
mov r0, r2
bx lr
Conversely with -mthumb any option less than -march=armv6 gives the following
code.
foo:
@ sp needed for prologue
bx lr
and a -mcpu=cortex-a8 gives the following code.
movs r2, #0
orrs r2, r2, r0
mov r0, r2
bx lr
The same problem occurs on trunk.
--
ramana at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-09-16 07:08:53
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41366
