diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 69f6fc0f57..1ab14fd0e2 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2010-10-16  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* gas/i386/i386.exp: Run x86-64-nops-1-g64.
+
+	* gas/i386/x86-64-nops-1.d: Remove -mtune=generic64.
+
+	* gas/i386/x86-64-nops-1-g64.d: New.
+
 2010-10-15  David Gibson  <david.gibson@analog.com>
 
 	* gas/bfin/loop_label.s, gas/bfin/loop_label.d,
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index b89767ffe6..f4465c2839 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -295,6 +295,7 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
     run_dump_test "x86-64-gidt"
     run_dump_test "x86-64-nops"
     run_dump_test "x86-64-nops-1"
+    run_dump_test "x86-64-nops-1-g64"
     run_dump_test "x86-64-nops-1-k8"
     run_dump_test "x86-64-nops-1-nocona"
     run_dump_test "x86-64-nops-1-core2"
diff --git a/gas/testsuite/gas/i386/x86-64-nops-1-g64.d b/gas/testsuite/gas/i386/x86-64-nops-1-g64.d
new file mode 100644
index 0000000000..427189de4b
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-nops-1-g64.d
@@ -0,0 +1,157 @@
+#source: nops-1.s
+#as: -mtune=generic64
+#objdump: -drw
+#name: x86-64 -mtune=generic64 nops 1
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <nop15>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 	data32 data32 data32 data32 data32 nopw %cs:0x0\(%rax,%rax,1\)
+
+0+10 <nop14>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 	data32 data32 data32 data32 nopw %cs:0x0\(%rax,%rax,1\)
+
+0+20 <nop13>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 66 66 66 2e 0f 1f 84 00 00 00 00 00 	data32 data32 data32 nopw %cs:0x0\(%rax,%rax,1\)
+
+0+30 <nop12>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 66 66 2e 0f 1f 84 00 00 00 00 00 	data32 data32 nopw %cs:0x0\(%rax,%rax,1\)
+
+0+40 <nop11>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 66 2e 0f 1f 84 00 00 00 00 00 	data32 nopw %cs:0x0\(%rax,%rax,1\)
+
+0+50 <nop10>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 2e 0f 1f 84 00 00 00 00 00 	nopw   %cs:0x0\(%rax,%rax,1\)
+
+0+60 <nop9>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 0f 1f 84 00 00 00 00 00 	nopw   0x0\(%rax,%rax,1\)
+
+0+70 <nop8>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	0f 1f 84 00 00 00 00 00 	nopl   0x0\(%rax,%rax,1\)
+
+0+80 <nop7>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	0f 1f 80 00 00 00 00 	nopl   0x0\(%rax\)
+
+0+90 <nop6>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 0f 1f 44 00 00    	nopw   0x0\(%rax,%rax,1\)
+
+0+a0 <nop5>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	0f 1f 44 00 00       	nopl   0x0\(%rax,%rax,1\)
+
+0+b0 <nop4>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	0f 1f 40 00          	nopl   0x0\(%rax\)
+
+0+c0 <nop3>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	0f 1f 00             	nopl   \(%rax\)
+
+0+d0 <nop2>:
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	90                   	nop
+[ 	]*[a-f0-9]+:	66 90                	xchg   %ax,%ax
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-nops-1.d b/gas/testsuite/gas/i386/x86-64-nops-1.d
index cb8cea5b04..b385ab5dfc 100644
--- a/gas/testsuite/gas/i386/x86-64-nops-1.d
+++ b/gas/testsuite/gas/i386/x86-64-nops-1.d
@@ -1,5 +1,4 @@
 #source: nops-1.s
-#as: -mtune=generic64
 #objdump: -drw
 #name: x86-64 nops 1
 
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 98dedc3248..ea0eeefca5 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,9 @@
+2010-10-16  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* i386-gen.c (cpu_flag_init): Add CpuNop to CPU_GENERIC64_FLAGS.
+
+	* i386-init.h: Regenerated.
+
 2010-10-15  Mike Frysinger  <vapier@gentoo.org>
 
 	* bfin-dis.c (decode_dsp32alu_0): Call imm5d() for BYTEOP2M.
diff --git a/opcodes/i386-gen.c b/opcodes/i386-gen.c
index 79fe9ad8c1..ee0633863d 100644
--- a/opcodes/i386-gen.c
+++ b/opcodes/i386-gen.c
@@ -47,7 +47,7 @@ static initializer cpu_flag_init[] =
   { "CPU_GENERIC32_FLAGS",
     "Cpu186|Cpu286|Cpu386" },
   { "CPU_GENERIC64_FLAGS", 
-    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuMMX|CpuSSE|CpuSSE2|CpuLM" },
+    "Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuClflush|Cpu387|Cpu687|CpuNop|CpuMMX|CpuSSE|CpuSSE2|CpuLM" },
   { "CPU_NONE_FLAGS",
    "0" },
   { "CPU_I186_FLAGS",
diff --git a/opcodes/i386-init.h b/opcodes/i386-init.h
index 9a3a999c51..fe546b60e1 100644
--- a/opcodes/i386-init.h
+++ b/opcodes/i386-init.h
@@ -30,7 +30,7 @@
       0, 0, 0, 0, 0, 0, 0, 0, 0 } }
 
 #define CPU_GENERIC64_FLAGS \
-  { { 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0,  \
+  { { 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0,  \
       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  \
       0, 0, 0, 0, 0, 1, 0, 0, 0 } }