Add a testcase for PR gas/19498

PR gas/19498
	* testsuite/gas/i386/i386.exp: Run pr19498.
	* testsuite/gas/i386/pr19498.d: New file.
	* testsuite/gas/i386/pr19498.s: Likewise.

gas/ChangeLog

@@ -1,3 +1,10 @@
+2016-04-04  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gas/19498
+	* testsuite/gas/i386/i386.exp: Run pr19498.
+	* testsuite/gas/i386/pr19498.d: New file.
+	* testsuite/gas/i386/pr19498.s: Likewise.
+
 2016-04-04  Andrew Burgess  <andrew.burgess@embecosm.com>
 
 	* config/tc-arc.h: Include 'opcode/arc.h'.

gas/testsuite/gas/i386/i386.exp

@@ -443,6 +443,7 @@ if [expr [istarget "i*86-*-*"] || [istarget "x86_64-*-*"]] then {
     run_list_test "reg-bad" ""
     run_list_test "space1" "-al"
     run_dump_test rept
+    run_dump_test pr19498
     if [is_elf_format] then {
 	run_list_test_stdin "list-1" "-al"
 	run_list_test_stdin "list-2" "-al"

gas/testsuite/gas/i386/pr19498.d

@@ -0,0 +1,13 @@
+#objdump: -dwr
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <callmefirst>:
+[ 	]*[a-f0-9]+:	90                   	nop
+
+0+1 <callmesecond>:
+[ 	]*[a-f0-9]+:	eb fd                	jmp    0 <callmefirst>
+#pass

gas/testsuite/gas/i386/pr19498.s

@@ -0,0 +1,8 @@
+      	.text
+	.globl callmefirst
+callmefirst:
+	nop
+	.globl callmesecond
+callmesecond:
+	jmp	callmealias.lto_priv.0
+	.weakref callmealias.lto_priv.0,callmefirst