[PATCH,testsuite] MIPS: Upgrade to MIPS IV if using (HAS_MOVN) with MIPS III.

[Toma Tabacu]

Hi,

The (HAS_MOVN) option should cause an upgrade to MIPS IV if the target is
pre-MIPS IV. However, the upgrade condition checks for "$isa < 3", which means
that we won't upgrade if we're targeting MIPS III.

This results in failures for the movcc-{1,2,3}.c and branch-cost-2.c tests
when the target is MIPS III.

This patch fixes the condition to include MIPS III.

Tested with mips-mti-elf.

Regards,
Toma Tabacu

gcc/testsuite/ChangeLog:

2016-11-07  Toma Tabacu  <toma.tab...@imgtec.com>

        * gcc.target/mips/mips.exp (mips-dg-options): Upgrade to MIPS IV if 
using
        (HAS_MOVN) with MIPS III.

diff --git a/gcc/testsuite/gcc.target/mips/mips.exp 
b/gcc/testsuite/gcc.target/mips/mips.exp
index 39f44ff..e22d782 100644
--- a/gcc/testsuite/gcc.target/mips/mips.exp
+++ b/gcc/testsuite/gcc.target/mips/mips.exp
@@ -1129,7 +1129,7 @@ proc mips-dg-options { args } {
         # We need MIPS IV or higher for:
        #
        #
-       } elseif { $isa < 3
+       } elseif { $isa < 4
                   && [mips_have_test_option_p options "HAS_MOVN"] } {
            mips_make_test_option options "-mips4"
         # We need MIPS III or higher for: