[Bug c/45416] Code size regression between 4.6(4.5) and 4.4

[bmei at broadcom dot com]

------- Comment #3 from bmei at broadcom dot com  2010-08-26 12:55 -------
I found I can reproduce the bug with ARM

ARM trunk -Os:
foo:
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        @ link register save eliminated.
        mov     r2, #1024
        mov     r3, #0
        and     r2, r2, r0
        and     r3, r3, r1
        orrs    r1, r2, r3
        moveq   r0, #0
        movne   r0, #1
        mov     pc, lr
        .size   foo, .-foo
Arm 4.40 -Os:

foo:
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        @ link register save eliminated.
        mov     r0, r0, lsr #10
        and     r0, r0, #1
        bx      lr


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45416