Use 64 bits counters to mitigate wrapping

Change-Id: I5c1f6a936fcd0d5d38c95a9fe6344fd7bf440e91
diff --git a/tools/test/p4src/p4-14/p4c-out/tofino/default/montara/logs/parde.calcfields.log b/tools/test/p4src/p4-14/p4c-out/tofino/default/montara/logs/parde.calcfields.log
index 8d68aa8..a187a5a 100644
--- a/tools/test/p4src/p4-14/p4c-out/tofino/default/montara/logs/parde.calcfields.log
+++ b/tools/test/p4src/p4-14/p4c-out/tofino/default/montara/logs/parde.calcfields.log
@@ -1,7 +1,7 @@
 +---------------------------------------------------------------------+
 |  Log file: parde.calcfields.log                                     |
 |  Compiler version: 5.1.0 (fca32d1)                                  |
-|  Created on: Wed Sep 13 01:39:57 2017                               |
+|  Created on: Wed Sep 13 12:56:56 2017                               |
 +---------------------------------------------------------------------+
 
 Reserving 0 16-bit ingress tphvs for residual checksums
@@ -19,19 +19,19 @@
 Number of reachable states from state <POV initialization>_<Ingress intrinsic metadata>_<Phase 0> : 10
 Number of reachable states from state <Shim start state> : 11
 parser_state_calculations:[
-	parse_tcp_139921671450000
-	parse_tcp_139921680729168
-	parse_udp_139921680728208
-	parse_ipv4_139921680730000
-	parse_ethernet_139921673362576
-	parse_pkt_in_139921680730192
-	parse_pkt_out_139921680761744
-	default_parser_139921680761552
-	start_139921680730832
-	<Phase 0>_139921680518480
-	<Ingress intrinsic metadata>_139921680518160
-	<POV initialization>_139921680518864
-	<Shim start state>_139921680564304
+	parse_tcp_140010997583440
+	parse_tcp_140010997847120
+	parse_udp_140010997846160
+	parse_ipv4_140010997847952
+	parse_ethernet_140010989206288
+	parse_pkt_in_140010997848144
+	parse_pkt_out_140010997662608
+	default_parser_140010997662416
+	start_140010997848784
+	<Phase 0>_140010988485968
+	<Ingress intrinsic metadata>_140010988485648
+	<POV initialization>_140010988486352
+	<Shim start state>_140010988626000
 ]
 parser_calculations: [