Comment # 1 on bug 1202027 from Richard Biener

There are differences in gcda like

@@ -1,7 +1,7 @@
 gimple-match.gcda:data:magic `gcda':version `B21*'
-gimple-match.gcda:stamp 1483659858
+gimple-match.gcda:stamp 1483764244
 gimple-match.gcda:checksum 2047081074
-gimple-match.gcda:  a1000000:   8:OBJECT_SUMMARY runs=2417, sum_max=3967228784
+gimple-match.gcda:  a1000000:   8:OBJECT_SUMMARY runs=2417, sum_max=3967227559
 gimple-match.gcda:  01000000:  12:FUNCTION ident=791600706,
lineno_checksum=0x29e79d07, cfg_checksum=0xdb3053ac
 gimple-match.gcda:    01a10000:  24:COUNTERS arcs 3 counts (all zero)
 gimple-match.gcda:    01a30000:   0:COUNTERS interval 0 counts

or

@@ -1,7 +1,7 @@
 gimple.gcda:data:magic `gcda':version `B21*'
-gimple.gcda:stamp 1483665359
+gimple.gcda:stamp 1483770318
 gimple.gcda:checksum 1688754586
-gimple.gcda:  a1000000:   8:OBJECT_SUMMARY runs=2417, sum_max=3967228784
+gimple.gcda:  a1000000:   8:OBJECT_SUMMARY runs=2417, sum_max=3967227559
 gimple.gcda:  01000000:  12:FUNCTION ident=1440623607,
lineno_checksum=0xf7869597, cfg_checksum=0xa43083b8
 gimple.gcda:    01a10000:   8:COUNTERS arcs 1 counts
 gimple.gcda:    01a70000:   0:COUNTERS topn 0 counts

but for example gcc.gcda has same sum_max of 84860534