[PATCH] testsuite: turn down verbosity of "process-message"

[David Malcolm <dmalcolm@redhat.com>]

When debugging a failing test, I typically invoke DejaGnu at
verbosity level 2 (via RUNTESTFLAGS="-v -v dg.exp=something"),
so that DejaGnu prints the command line used to invoke the
compiler; specifically these two sites:
  target.exp "Invoking the compiler as "
  remote.exp "Executing on $hostname"
which are both verbosity level 2.

Unfortunately I run into an O(n^2) issue with logging from
process-message:

  verbose "process-message:\n${dg-messages}" 2

where, as each message each processed, it emits the state
of dg-messages, containing the new message and all messages so far,
leading to exponentially-increasing output at level 2 as more test
messages are added.

This patch papers over the problem by moving the
problematic message to verbosity level 3.

Successfully regrtested on x86_64-pc-linux-gnu.

OK for trunk?

gcc/testsuite/ChangeLog:
	* lib/gcc-dg.exp (process-message): Change verbosity level of
	"verbose" from 2 to 3.
	(dg-locus): Likewise.
---
 gcc/testsuite/lib/gcc-dg.exp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/lib/gcc-dg.exp b/gcc/testsuite/lib/gcc-dg.exp
index 305dd3c..054d884 100644
--- a/gcc/testsuite/lib/gcc-dg.exp
+++ b/gcc/testsuite/lib/gcc-dg.exp
@@ -1165,7 +1165,7 @@ proc process-message { msgproc msgprefix dgargs } {
     set newentry [lreplace $newentry 2 2 $expmsg]
 
     set dg-messages [lreplace ${dg-messages} end end $newentry]
-    verbose "process-message:\n${dg-messages}" 2
+    verbose "process-message:\n${dg-messages}" 3
 }
 
 # Look for messages that don't have standard prefixes.
@@ -1199,7 +1199,7 @@ proc dg-locus { args } {
 
     set newentry [lreplace $newentry 2 2 $expmsg]
     set dg-messages [lreplace ${dg-messages} end end $newentry]
-    verbose "process-message:\n${dg-messages}" 2
+    verbose "process-message:\n${dg-messages}" 3
 }
 
 # Handle output from -fopt-info for MSG_OPTIMIZED_LOCATIONS:
-- 
1.8.5.3