[PATCH] MIPS TESTSUITE LD: Skip o32 flags check on mips*-*-irix*

[Paul Hua]

Hi:

The following test fails on mips-sgi-irix6.

FAIL: MIPS compatible objects:  "-mips4 -mgp32 -32"  "-mips2 -32"
FAIL: MIPS compatible objects:  "-mips4 -mabi=32"    "-mips2 -32"
FAIL: MIPS compatible objects:  "-mips2 -32"         "-mips4 -mabi=32"
FAIL: MIPS compatible objects:  "-march=vr4120 -mabi=32"  "-mips3 -mabi=32"
FAIL: MIPS compatible objects:  "-march=sb1 -mgp32 -32"   "-march=4000
-mgp32 -32"
FAIL: MIPS compatible objects:  "-mips32 -mabi=32"        "-march=sb1 -mabi=32"
FAIL: MIPS compatible objects:  "-mips64r2 -mabi=32"      "-mips32 -mabi=32"

The mips*-*-irix* do not understand o32 flags according to
gas/configure.ac:325~332

325         # See whether it's appropriate to set E_MIPS_ABI_O32 for o32
326         # binaries.  It's a GNU extension that some OSes don't understand.
327         case ${target} in
328           *-*-irix*)
329             use_e_mips_abi_o32=0
330             ;;
331           *)
332             use_e_mips_abi_o32=1

The attached patch skips o32 flags checking if the target is mips*-*-irix*.

ld/ChangeLog
2018-08-25  Chenghua Xu  <paul.hua.gm@gmail.com>

        * testsuite/ld-mips-elf/mips-elf-flags.exp (good_combination):
        Skip o32 flags checking if target is mips*-*-irix*.
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