[PATCH 3/6] x86: add another IAMCU testcase

[Jan Beulich]

Now that {L,K}1OM support is gone, and with it the brokenness in
check_cpu_arch_compatible(), put in place a test making sure that only
extensions can be enabled via .arch for IAMCU, and that the base
architecture cannot be changed.

--- a/gas/testsuite/gas/i386/iamcu-inval-1.l
+++ b/gas/testsuite/gas/i386/iamcu-inval-1.l
@@ -5,10 +5,11 @@
 .*:8: Error: .*
 .*:10: Error: .*
 .*:11: Error: .*
+.*:13: Error: .*
 GAS LISTING .*
 
 
-[ 	]*1[ 	]+\# Invalid Intel MCU instructions
+[ 	]*1[ 	]+\# Invalid Intel MCU instructions / directives
 [ 	]*2[ 	]+\.text
 [ 	]*3[ 	]+
 [ 	]*4[ 	]+fnstsw
@@ -19,3 +20,5 @@ GAS LISTING .*
 [ 	]*9[ 	]+
 [ 	]*10[ 	]+movq	%xmm1, \(%eax\)
 [ 	]*11[ 	]+movnti	%eax, \(%eax\)
+[ 	]*12[ 	]+
+[ 	]*13[ 	]+\.arch generic32
--- a/gas/testsuite/gas/i386/iamcu-inval-1.s
+++ b/gas/testsuite/gas/i386/iamcu-inval-1.s
@@ -1,4 +1,4 @@
-# Invalid Intel MCU instructions
+# Invalid Intel MCU instructions / directives
 	.text
 
 	fnstsw
@@ -9,3 +9,5 @@
 
 	movq	%xmm1, (%eax)
 	movnti	%eax, (%eax)
+
+	.arch generic32