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[Bug target/43129] Simplify global variable's address loading with option -fpic


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43129

Stephen Clarke <stephen.clarke at st dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |stephen.clarke at st dot
                   |                            |com

--- Comment #8 from Stephen Clarke <stephen.clarke at st dot com> 2010-10-14 16:32:56 UTC ---
For arm instruction set, could you fold pc into the indexing
to save an instruction?

foo:
        ldr     r3, .L2        // C
.LPIC0:
        ldr     r3, [r3,pc]    // C
        @ sp needed for prologue
        ldr     r2, [r3]
        str     r0, [r3]
        mov     r0, r2
        bx      lr
.L3:
        .align  2
.L2:
        .word   ABS_ADDRESS_OF_GOT_ENTRY_FOR_i -(.LPIC0+4) // C


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