Limit perf data buffer during feature checking

Commit 2ead1ab91123 ("Limit perf data buffer during profiling") added
-m8 to perf invocations during running tests, but the same problem
exists for checking whether perf is working in the first place.

gcc/testsuite/ChangeLog:

2020-12-08  Ilya Leoshkevich  <iii@linux.ibm.com>

	* lib/target-supports.exp(check_profiling_available): Limit
	perf data buffer.

diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 7e3cf29c1ce6793239a8f598bfa12acd51480db6..ad38b75659b48c8658af8c294c0f33015339afe1 100644 (file)
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -654,7 +654,7 @@ proc check_profiling_available { test_what } {
            return 0
        }
         global srcdir
-       set status [remote_exec host "$srcdir/../config/i386/gcc-auto-profile" "true -v >/dev/null"]
+       set status [remote_exec host "$srcdir/../config/i386/gcc-auto-profile" "-m8 true -v >/dev/null"]
        if { [lindex $status 0] != 0 } {
            verbose "autofdo not supported because perf does not work"
            return 0