[Bug target/59710] Nios2: Missing gprel optimization

[sebastian.huber@embedded-brains.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59710

Sebastian Huber <sebastian.huber@embedded-brains.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |5.0

--- Comment #3 from Sebastian Huber <sebastian.huber@embedded-brains.de> ---
Thanks, this fixes the problem in case the new -mgpot=global option is used. Do
you plan to back port this to GCC 4.9? If not, then can you please adjust the
target milestone and close the PR.

nios2-elf-gcc -O2 -mgpopt=global -fno-common -S gprel-ok.c && cat gprel-ok.s
        .file   "gprel-ok.c"
        .section        .text
        .align  2
        .global gprel_ok
        .type   gprel_ok, @function
gprel_ok:
        movi    r2, 123
        stw     r2, %gprel(iii)(gp)
        movi    r2, 789
        stw     r2, %gprel(jjj)(gp)
        ret
        .size   gprel_ok, .-gprel_ok
        .global jjj
        .section        .sdata,"aws",@progbits
        .align  2
        .type   jjj, @object
        .size   jjj, 4
jjj:
        .long   456
        .global iii
        .section        .sbss,"aws",@nobits
        .align  2
        .type   iii, @object
        .size   iii, 4
iii:
        .zero   4
        .ident  "GCC: (GNU) 5.0.0 20150116 (experimental)"
nios2-elf-gcc -O2 -mgpopt=global -fno-common -S gprel-not-ok.c && cat
gprel-not-ok.s
        .file   "gprel-not-ok.c"
        .section        .text
        .align  2
        .global gprel_not_ok
        .type   gprel_not_ok, @function
gprel_not_ok:
        movi    r2, 123
        stw     r2, %gprel(iii)(gp)
        movi    r2, 789
        stw     r2, %gprel(jjj)(gp)
        ret
        .size   gprel_not_ok, .-gprel_not_ok
        .ident  "GCC: (GNU) 5.0.0 20150116 (experimental)"