[PATCH, testsuite] MIPS: Upgrade to R2 for -mmicromips.

[Toma Tabacu]

Hi,

microMIPS is not supported on pre-R2 architectures, but the testsuite allows
it to be used on pre-R2 architectures, which results in test failures.

This patch makes the testsuite upgrade to R2 if -mmicromips is used in a test.

Tested with mips-mti-elf.

Regards,
Toma

gcc/testsuite/ChangeLog:

        * gcc.target/mips/mips.exp (mips-dg-options): Upgrade to R2 for
        -mmicromips.

diff --git a/gcc/testsuite/gcc.target/mips/mips.exp 
b/gcc/testsuite/gcc.target/mips/mips.exp
index 3d04d2f..d0f4037 100644
--- a/gcc/testsuite/gcc.target/mips/mips.exp
+++ b/gcc/testsuite/gcc.target/mips/mips.exp
@@ -1147,7 +1147,8 @@ proc mips-dg-options { args } {
                 || [mips_have_test_option_p options "HAS_MADDPS"]
                 || [mips_have_test_option_p options "-mdspr2"]
                 || [mips_have_test_option_p options "-mnan=2008"]
-                || [mips_have_test_option_p options "-mabs=2008"]) } {
+                || [mips_have_test_option_p options "-mabs=2008"]
+                || [mips_have_test_option_p options "-mmicromips"]) } {
            if { $gp_size == 32 } {
                mips_make_test_option options "-mips32r2"
            } else {