Hi All,

genmatch currently outputs commented out line directives that have no effect
but the compiler still has to parse only to discard.

They are however handy when debugging genmatch output.  As such this moves them
behind the -vv flag.

Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.

Ok for master?

Thanks,
Tamar

gcc/ChangeLog:

	PR bootstrap/84402
	* genmatch.cc (output_line_directive): Only emit commented directive
	when -vv.
	(main): Initialize verbose.

--- inline copy of patch -- 
diff --git a/gcc/genmatch.cc b/gcc/genmatch.cc
index 638606b2502f640e59527fc5a0b23fa3bedd0cee..6d62cdea2082d92e5ecc1102c80205115a4e3040 100644
--- a/gcc/genmatch.cc
+++ b/gcc/genmatch.cc
@@ -209,7 +209,7 @@ output_line_directive (FILE *f, location_t location,
       else
 	fprintf (f, "%s:%d", file, loc.line);
     }
-  else
+  else if (verbose == 2)
     /* Other gen programs really output line directives here, at least for
        development it's right now more convenient to have line information
        from the generated file.  Still keep the directives as comment for now
@@ -5221,6 +5221,7 @@ main (int argc, char **argv)
     return 1;
 
   bool gimple = true;
+  verbose = 0;
   char *input = argv[argc-1];
   for (int i = 1; i < argc - 1; ++i)
     {




--