parsecpu.awk (all_cores): Remove duplicates.

2017-07-25  Tamar Christina  <tamar.christina@arm.com>

	* config/arm/parsecpu.awk (all_cores): Remove duplicates.

From-SVN: r250519

gcc/ChangeLog

+2017-07-25  Tamar Christina  <tamar.christina@arm.com>
+
+	* config/arm/parsecpu.awk (all_cores): Remove duplicates.
+
 2017-07-25  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/81455

gcc/config/arm/parsecpu.awk

@@ -223,10 +223,39 @@ function gen_comm_data () {
 	    if (arch_opt_remove[feats[1],feats[m]] == "true") {
 		fatal("cannot remove features from architecture specs")
 	    }
-	    print "        " arch_opt_isa[feats[1],feats[m]] ","
+	    # The isa_features array that is being initialized here has a length
+	    # of max isa_bit_num, which is the last entry in the enum.
+	    # Logically this means that the number of features is implicitly
+	    # never more than the number of feature bits we have.  This is only
+	    # true if we don't emit duplicates here.  So keep track of which
+	    # options we have already emitted so we don't emit them twice.
+	    nopts = split (arch_opt_isa[feats[1],feats[m]], opts, ",")
+	    for (i = 1; i <= nopts; i++) {
+		if (! (opts[i] in seen)) {
+		  print "        " opts[i] ","
+		  seen[opts[i]]
+		}
+	    }
+	}
+	if (cpus[n] in cpu_fpu) {
+	    nopts = split (fpu_isa[cpu_fpu[cpus[n]]], opts, ",")
+	    for (i = 1; i <= nopts; i++) {
+		if (! (opts[i] in seen)) {
+		  print "        " opts[i] ","
+		  seen[opts[i]]
+		}
+	    }
+	}
+	if (cpus[n] in cpu_isa) {
+	    nopts = split (cpu_isa[cpus[n]], opts, ",")
+	    for (i = 1; i <= nopts; i++) {
+		if (! (opts[i] in seen)) {
+		  print "        " opts[i] ","
+		  seen[opts[i]]
+		}
+	    }
 	}
-	if (cpus[n] in cpu_fpu) print "        " fpu_isa[cpu_fpu[cpus[n]]] ","
-	if (cpus[n] in cpu_isa) print "        " cpu_isa[cpus[n]] ","
+	delete seen
 	print "        isa_nobit"
 	print "      }"
 	print "    },"