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From: "ramana at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/64458] [ARM] Redundant ldr when accessing var inside and outside a loop
Date: Fri, 16 Jan 2015 14:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64458

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2015-01-16
                 CC|                            |ramana at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Huh, what arch options ? 

    .arm
    .syntax divided
    .file    "ldr.c"
    .text
    .align    2
    .global    g
    .type    g, %function
g:
    @ Function supports interworking.
    @ args = 0, pretend = 0, frame = 0
    @ frame_needed = 0, uses_anonymous_args = 0
    @ link register save eliminated.
    ldr    r2, .L5
    ldr    r3, [r2]
.L2:
    cmp    r3, #0
    bne    .L2
    mov    r3, #1
    str    r3, [r2]
    bx    lr
.L6:
    .align    2
.L5:
    .word    glob
    .size    g, .-g
    .comm    glob,4,4