GCOV: Print one decimal place in human readable mode.

2018-09-05  Martin Liska  <mliska@suse.cz>

	* doc/gcov.texi: Update documentation of humar
	readable mode.
	* gcov.c (format_count): Print one decimal place, it provides
	more fine number of situations like '1G' vs. '1.4G'.
2018-09-05  Martin Liska  <mliska@suse.cz>

	* g++.dg/gcov/loop.C: Update test to support new format.

From-SVN: r264112

gcc/ChangeLog

 2018-09-05  Martin Liska  <mliska@suse.cz>
 
+	* doc/gcov.texi: Update documentation of humar
+	readable mode.
+	* gcov.c (format_count): Print one decimal place, it provides
+	more fine number of situations like '1G' vs. '1.4G'.
+
+2018-09-05  Martin Liska  <mliska@suse.cz>
+
 	PR target/87164
 	* config/rs6000/rs6000.opt: Mark the option as Deprecated.
 	* optc-gen.awk: Allow 'Var' for Deprecated options in order

gcc/doc/gcov.texi

@@ -255,7 +255,7 @@ lcount:36,1,0
 
 @item -j
 @itemx --human-readable
-Write counts in human readable format (like 24k).
+Write counts in human readable format (like 24.6k).
 
 @item -k
 @itemx --use-colors

gcc/gcov.c

@@ -2216,8 +2216,8 @@ format_count (gcov_type count)
       if (count + divisor / 2 < 1000 * divisor)
 	break;
     }
-  gcov_type r  = (count + divisor / 2) / divisor;
-  sprintf (buffer, "%" PRId64 "%c", r, units[i]);
+  float r = 1.0f * count / divisor;
+  sprintf (buffer, "%.1f%c", r, units[i]);
   return buffer;
 }
 

gcc/testsuite/ChangeLog

+2018-09-05  Martin Liska  <mliska@suse.cz>
+
+	* g++.dg/gcov/loop.C: Update test to support new format.
+
 2018-09-04  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR debug/86593

gcc/testsuite/g++.dg/gcov/loop.C

@@ -2,11 +2,11 @@
 /* { dg-do run { target native } } */
 
 unsigned
-loop (unsigned n, int value)		  /* count(14k) */
+loop (unsigned n, int value)		  /* count(14.0k) */
 {
   for (unsigned i = 0; i < n - 1; i++)
   {
-    value += i;				  /* count(21M) */
+    value += i;				  /* count(21.0M) */
   }
 
   return value;
@@ -18,7 +18,7 @@ int main(int argc, char **argv)
   for (unsigned i = 0; i < 7 * 1000; i++)
   {
     sum += loop (1000, sum);
-    sum += loop (2000, sum);		  /* count(7k) */
+    sum += loop (2000, sum);		  /* count(7.0k) */
   }
 
   return 0;				  /* count(1) */