1 files changed, 949 insertions, 0 deletions
diff --git a/test/MC/X86/x86-16.s b/test/MC/X86/x86-16.s
new file mode 100644
index 0000000..1f87c81
--- /dev/null
+++ b/test/MC/X86/x86-16.s
@@ -0,0 +1,949 @@
+// RUN: llvm-mc -triple i386-unknown-unknown-code16 --show-encoding %s | FileCheck %s
+
+	movl $0x12345678, %ebx
+// CHECK: movl
+// CHECK: encoding: [0x66,0xbb,0x78,0x56,0x34,0x12]
+	pause
+// CHECK: pause
+// CHECK: encoding: [0xf3,0x90]
+	sfence
+// CHECK: sfence
+// CHECK: encoding: [0x0f,0xae,0xf8]
+	lfence
+// CHECK: lfence
+// CHECK: encoding: [0x0f,0xae,0xe8]
+	mfence
+	stgi
+// CHECK: stgi
+// CHECK: encoding: [0x0f,0x01,0xdc]
+	clgi
+// CHECK: clgi
+// CHECK: encoding: [0x0f,0x01,0xdd]
+
+	rdtscp
+// CHECK: rdtscp
+// CHECK:  encoding: [0x0f,0x01,0xf9]
+
+
+// CHECK: movl	%eax, 16(%ebp)          # encoding: [0x67,0x66,0x89,0x45,0x10]
+	movl	%eax, 16(%ebp)
+// CHECK: movl	%eax, -16(%ebp)          # encoding: [0x67,0x66,0x89,0x45,0xf0]
+	movl	%eax, -16(%ebp)
+
+// CHECK: testb	%bl, %cl                # encoding: [0x84,0xcb]
+        testb %bl, %cl
+
+// CHECK: cmpl	%eax, %ebx              # encoding: [0x66,0x39,0xc3]
+        cmpl %eax, %ebx
+
+// CHECK: addw	%ax, %ax                # encoding: [0x01,0xc0]
+        addw %ax, %ax
+
+// CHECK: shrl	%eax                    # encoding: [0x66,0xd1,0xe8]
+        shrl $1, %eax
+
+// CHECK: shll	%eax                    # encoding: [0x66,0xd1,0xe0]
+        sall $1, %eax
+// CHECK: shll	%eax                    # encoding: [0x66,0xd1,0xe0]
+        sal $1, %eax
+
+// moffset forms of moves
+
+// CHECK: movb 0, %al  # encoding: [0xa0,0x00,0x00]
+movb	0, %al
+
+// CHECK: movw 0, %ax  # encoding: [0xa1,0x00,0x00]
+movw	0, %ax
+
+// CHECK: movl 0, %eax  # encoding: [0x66,0xa1,0x00,0x00]
+movl	0, %eax
+
+into
+// CHECK: into
+// CHECK:  encoding: [0xce]
+int3
+// CHECK: int3
+// CHECK:  encoding: [0xcc]
+int $4
+// CHECK: int $4
+// CHECK:  encoding: [0xcd,0x04]
+int $255
+// CHECK: int $255
+// CHECK:  encoding: [0xcd,0xff]
+
+// CHECK: pushfw	# encoding: [0x9c]
+        pushf
+// CHECK: pushfl	# encoding: [0x66,0x9c]
+        pushfl
+// CHECK: popfw         # encoding: [0x9d]
+        popf
+// CHECK: popfl	        # encoding: [0x66,0x9d]
+        popfl
+
+retl
+// CHECK: ret
+// CHECK:  encoding: [0x66,0xc3]
+
+// CHECK: cmoval	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x47,0xd0]
+        	cmoval	%eax,%edx
+
+// CHECK: cmovael	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
+        	cmovael	%eax,%edx
+
+// CHECK: cmovbel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
+        	cmovbel	%eax,%edx
+
+// CHECK: cmovbl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x42,0xd0]
+        	cmovbl	%eax,%edx
+
+// CHECK: cmovbw %bx, %bx
+cmovnae	%bx,%bx
+
+
+// CHECK: cmovbel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
+        	cmovbel	%eax,%edx
+
+// CHECK: cmovbl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x42,0xd0]
+        	cmovcl	%eax,%edx
+
+// CHECK: cmovel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x44,0xd0]
+        	cmovel	%eax,%edx
+
+// CHECK: cmovgl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4f,0xd0]
+        	cmovgl	%eax,%edx
+
+// CHECK: cmovgel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
+        	cmovgel	%eax,%edx
+
+// CHECK: cmovll	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4c,0xd0]
+        	cmovll	%eax,%edx
+
+// CHECK: cmovlel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
+        	cmovlel	%eax,%edx
+
+// CHECK: cmovbel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
+        	cmovnal	%eax,%edx
+
+// CHECK: cmovnel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
+        	cmovnel	%eax,%edx
+
+// CHECK: cmovael	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
+        	cmovnbl	%eax,%edx
+
+// CHECK: cmoval	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x47,0xd0]
+        	cmovnbel	%eax,%edx
+
+// CHECK: cmovael	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
+        	cmovncl	%eax,%edx
+
+// CHECK: cmovnel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
+        	cmovnel	%eax,%edx
+
+// CHECK: cmovlel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
+        	cmovngl	%eax,%edx
+
+// CHECK: cmovgel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
+        	cmovnl	%eax,%edx
+
+// CHECK: cmovnel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
+        	cmovnel	%eax,%edx
+
+// CHECK: cmovlel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
+        	cmovngl	%eax,%edx
+
+// CHECK: cmovll	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4c,0xd0]
+        	cmovngel	%eax,%edx
+
+// CHECK: cmovgel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
+        	cmovnll	%eax,%edx
+
+// CHECK: cmovgl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4f,0xd0]
+        	cmovnlel	%eax,%edx
+
+// CHECK: cmovnol	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x41,0xd0]
+        	cmovnol	%eax,%edx
+
+// CHECK: cmovnpl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4b,0xd0]
+        	cmovnpl	%eax,%edx
+
+// CHECK: cmovnsl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x49,0xd0]
+        	cmovnsl	%eax,%edx
+
+// CHECK: cmovnel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
+        	cmovnzl	%eax,%edx
+
+// CHECK: cmovol	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x40,0xd0]
+        	cmovol	%eax,%edx
+
+// CHECK: cmovpl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x4a,0xd0]
+        	cmovpl	%eax,%edx
+
+// CHECK: cmovsl	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x48,0xd0]
+        	cmovsl	%eax,%edx
+
+// CHECK: cmovel	%eax, %edx
+// CHECK:  encoding: [0x66,0x0f,0x44,0xd0]
+        	cmovzl	%eax,%edx
+
+// CHECK: fmul	%st(0)
+// CHECK:  encoding: [0xd8,0xc8]
+        fmul %st(0), %st
+
+// CHECK: fadd	%st(0)
+// CHECK:  encoding: [0xd8,0xc0]
+        fadd %st(0), %st
+
+// CHECK: fsub	%st(0)
+// CHECK:  encoding: [0xd8,0xe0]
+        fsub %st(0), %st
+
+// CHECK: fsubr	%st(0)
+// CHECK:  encoding: [0xd8,0xe8]
+        fsubr %st(0), %st
+
+// CHECK: fdivr	%st(0)
+// CHECK:  encoding: [0xd8,0xf8]
+        fdivr %st(0), %st
+
+// CHECK: fdiv	%st(0)
+// CHECK:  encoding: [0xd8,0xf0]
+        fdiv %st(0), %st
+
+// CHECK: movl	%cs, %eax
+// CHECK:  encoding: [0x66,0x8c,0xc8]
+        movl %cs, %eax
+
+// CHECK: movw	%cs, %ax
+// CHECK:  encoding: [0x8c,0xc8]
+        movw %cs, %ax
+
+// CHECK: movl	%cs, (%eax)
+// CHECK:  encoding: [0x67,0x66,0x8c,0x08]
+        movl %cs, (%eax)
+
+// CHECK: movw	%cs, (%eax)
+// CHECK:  encoding: [0x67,0x8c,0x08]
+        movw %cs, (%eax)
+
+// CHECK: movl	%eax, %cs
+// CHECK:  encoding: [0x66,0x8e,0xc8]
+        movl %eax, %cs
+
+// CHECK: movl	(%eax), %cs
+// CHECK:  encoding: [0x67,0x66,0x8e,0x08]
+        movl (%eax), %cs
+
+// CHECK: movw	(%eax), %cs
+// CHECK:  encoding: [0x67,0x8e,0x08]
+        movw (%eax), %cs
+
+// CHECK: movl	%cr0, %eax
+// CHECK:  encoding: [0x0f,0x20,0xc0]
+        movl %cr0,%eax
+
+// CHECK: movl	%cr1, %eax
+// CHECK:  encoding: [0x0f,0x20,0xc8]
+        movl %cr1,%eax
+
+// CHECK: movl	%cr2, %eax
+// CHECK:  encoding: [0x0f,0x20,0xd0]
+        movl %cr2,%eax
+
+// CHECK: movl	%cr3, %eax
+// CHECK:  encoding: [0x0f,0x20,0xd8]
+        movl %cr3,%eax
+
+// CHECK: movl	%cr4, %eax
+// CHECK:  encoding: [0x0f,0x20,0xe0]
+        movl %cr4,%eax
+
+// CHECK: movl	%dr0, %eax
+// CHECK:  encoding: [0x0f,0x21,0xc0]
+        movl %dr0,%eax
+
+// CHECK: movl	%dr1, %eax
+// CHECK:  encoding: [0x0f,0x21,0xc8]
+        movl %dr1,%eax
+
+// CHECK: movl	%dr1, %eax
+// CHECK:  encoding: [0x0f,0x21,0xc8]
+        movl %dr1,%eax
+
+// CHECK: movl	%dr2, %eax
+// CHECK:  encoding: [0x0f,0x21,0xd0]
+        movl %dr2,%eax
+
+// CHECK: movl	%dr3, %eax
+// CHECK:  encoding: [0x0f,0x21,0xd8]
+        movl %dr3,%eax
+
+// CHECK: movl	%dr4, %eax
+// CHECK:  encoding: [0x0f,0x21,0xe0]
+        movl %dr4,%eax
+
+// CHECK: movl	%dr5, %eax
+// CHECK:  encoding: [0x0f,0x21,0xe8]
+        movl %dr5,%eax
+
+// CHECK: movl	%dr6, %eax
+// CHECK:  encoding: [0x0f,0x21,0xf0]
+        movl %dr6,%eax
+
+// CHECK: movl	%dr7, %eax
+// CHECK:  encoding: [0x0f,0x21,0xf8]
+        movl %dr7,%eax
+
+// CHECK: wait
+// CHECK:  encoding: [0x9b]
+	fwait
+
+// CHECK: [0x66,0x65,0xa1,0x7c,0x00]
+        movl	%gs:124, %eax
+
+// CHECK: pusha
+// CHECK:  encoding: [0x60]
+        	pusha
+
+// CHECK: popa
+// CHECK:  encoding: [0x61]
+        	popa
+
+// CHECK: pushaw
+// CHECK:  encoding: [0x60]
+        	pushaw
+
+// CHECK: popaw
+// CHECK:  encoding: [0x61]
+        	popaw
+
+// CHECK: pushal
+// CHECK:  encoding: [0x66,0x60]
+        	pushal
+
+// CHECK: popal
+// CHECK:  encoding: [0x66,0x61]
+        	popal
+
+// CHECK: jmpw *8(%eax)
+// CHECK:   encoding: [0x67,0xff,0x60,0x08]
+	jmp	*8(%eax)
+
+// CHECK: jmpl *8(%eax)
+// CHECK:   encoding: [0x67,0x66,0xff,0x60,0x08]
+        jmpl	*8(%eax)
+
+// CHECK: lcalll $2, $4660
+// CHECK:   encoding: [0x66,0x9a,0x34,0x12,0x00,0x00,0x02,0x00]
+lcalll $0x2, $0x1234
+
+
+L1:
+  jcxz L1
+// CHECK: jcxz L1
+// CHECK:   encoding: [0xe3,A]
+  jecxz L1
+// CHECK: jecxz L1
+// CHECK:   encoding: [0x67,0xe3,A]
+
+iret
+// CHECK: iretw
+// CHECK: encoding: [0xcf]
+iretw
+// CHECK: iretw
+// CHECK: encoding: [0xcf]
+iretl
+// CHECK: iretl
+// CHECK: encoding: [0x66,0xcf]
+
+sysret
+// CHECK: sysretl
+// CHECK: encoding: [0x0f,0x07]
+sysretl
+// CHECK: sysretl
+// CHECK: encoding: [0x0f,0x07]
+
+testl	%ecx, -24(%ebp)
+// CHECK: testl	-24(%ebp), %ecx
+testl	-24(%ebp), %ecx
+// CHECK: testl	-24(%ebp), %ecx
+
+
+push %cs
+// CHECK: pushw	%cs
+// CHECK: encoding: [0x0e]
+push %ds
+// CHECK: pushw	%ds
+// CHECK: encoding: [0x1e]
+push %ss
+// CHECK: pushw	%ss
+// CHECK: encoding: [0x16]
+push %es
+// CHECK: pushw	%es
+// CHECK: encoding: [0x06]
+push %fs
+// CHECK: pushw	%fs
+// CHECK: encoding: [0x0f,0xa0]
+push %gs
+// CHECK: pushw	%gs
+// CHECK: encoding: [0x0f,0xa8]
+
+pushw %cs
+// CHECK: pushw	%cs
+// CHECK: encoding: [0x0e]
+pushw %ds
+// CHECK: pushw	%ds
+// CHECK: encoding: [0x1e]
+pushw %ss
+// CHECK: pushw	%ss
+// CHECK: encoding: [0x16]
+pushw %es
+// CHECK: pushw	%es
+// CHECK: encoding: [0x06]
+pushw %fs
+// CHECK: pushw	%fs
+// CHECK: encoding: [0x0f,0xa0]
+pushw %gs
+// CHECK: pushw	%gs
+// CHECK: encoding: [0x0f,0xa8]
+
+pushl %cs
+// CHECK: pushl	%cs
+// CHECK: encoding: [0x66,0x0e]
+pushl %ds
+// CHECK: pushl	%ds
+// CHECK: encoding: [0x66,0x1e]
+pushl %ss
+// CHECK: pushl	%ss
+// CHECK: encoding: [0x66,0x16]
+pushl %es
+// CHECK: pushl	%es
+// CHECK: encoding: [0x66,0x06]
+pushl %fs
+// CHECK: pushl	%fs
+// CHECK: encoding: [0x66,0x0f,0xa0]
+pushl %gs
+// CHECK: pushl	%gs
+// CHECK: encoding: [0x66,0x0f,0xa8]
+
+pop %ss
+// CHECK: popw	%ss
+// CHECK: encoding: [0x17]
+pop %ds
+// CHECK: popw	%ds
+// CHECK: encoding: [0x1f]
+pop %es
+// CHECK: popw	%es
+// CHECK: encoding: [0x07]
+
+popl %ss
+// CHECK: popl	%ss
+// CHECK: encoding: [0x66,0x17]
+popl %ds
+// CHECK: popl	%ds
+// CHECK: encoding: [0x66,0x1f]
+popl %es
+// CHECK: popl	%es
+// CHECK: encoding: [0x66,0x07]
+
+pushfd
+// CHECK: pushfl
+popfd
+// CHECK: popfl
+pushfl
+// CHECK: pushfl
+popfl
+// CHECK: popfl
+
+
+	setc	%bl
+	setnae	%bl
+	setnb	%bl
+	setnc	%bl
+	setna	%bl
+	setnbe	%bl
+	setpe	%bl
+	setpo	%bl
+	setnge	%bl
+	setnl	%bl
+	setng	%bl
+	setnle	%bl
+
+        setneb  %cl // CHECK: setne %cl
+	setcb	%bl // CHECK: setb %bl
+	setnaeb	%bl // CHECK: setb %bl
+
+
+// CHECK: lcalll	$31438, $31438
+// CHECK: lcalll	$31438, $31438
+// CHECK: ljmpl	$31438, $31438
+// CHECK: ljmpl	$31438, $31438
+
+calll	$0x7ace,$0x7ace
+lcalll	$0x7ace,$0x7ace
+jmpl	$0x7ace,$0x7ace
+ljmpl	$0x7ace,$0x7ace
+
+// CHECK: lcallw	$31438, $31438
+// CHECK: lcallw	$31438, $31438
+// CHECK: ljmpw	$31438, $31438
+// CHECK: ljmpw	$31438, $31438
+
+callw	$0x7ace,$0x7ace
+lcallw	$0x7ace,$0x7ace
+jmpw	$0x7ace,$0x7ace
+ljmpw	$0x7ace,$0x7ace
+
+// CHECK: lcallw	$31438, $31438
+// CHECK: lcallw	$31438, $31438
+// CHECK: ljmpw	$31438, $31438
+// CHECK: ljmpw	$31438, $31438
+
+call	$0x7ace,$0x7ace
+lcall	$0x7ace,$0x7ace
+jmp	$0x7ace,$0x7ace
+ljmp	$0x7ace,$0x7ace
+
+// CHECK: calll a
+ calll a
+
+// CHECK:	incb	%al # encoding: [0xfe,0xc0]
+	incb %al
+
+// CHECK:	incw	%ax # encoding: [0x40]
+	incw %ax
+
+// CHECK:	incl	%eax # encoding: [0x66,0x40]
+	incl %eax
+
+// CHECK:	decb	%al # encoding: [0xfe,0xc8]
+	decb %al
+
+// CHECK:	decw	%ax # encoding: [0x48]
+	decw %ax
+
+// CHECK:	decl	%eax # encoding: [0x66,0x48]
+	decl %eax
+
+// CHECK: pshufw $14, %mm4, %mm0 # encoding: [0x0f,0x70,0xc4,0x0e]
+pshufw $14, %mm4, %mm0
+
+// CHECK: pshufw $90, %mm4, %mm0 # encoding: [0x0f,0x70,0xc4,0x5a]
+pshufw $90, %mm4, %mm0
+
+// CHECK: aaa
+// CHECK:  encoding: [0x37]
+        	aaa
+
+// CHECK: aad	$1
+// CHECK:  encoding: [0xd5,0x01]
+        	aad	$1
+
+// CHECK: aad
+// CHECK:  encoding: [0xd5,0x0a]
+        	aad	$0xA
+
+// CHECK: aad
+// CHECK:  encoding: [0xd5,0x0a]
+        	aad
+
+// CHECK: aam	$2
+// CHECK:  encoding: [0xd4,0x02]
+        	aam	$2
+
+// CHECK: aam
+// CHECK:  encoding: [0xd4,0x0a]
+        	aam	$0xA
+
+// CHECK: aam
+// CHECK:  encoding: [0xd4,0x0a]
+        	aam
+
+// CHECK: aas
+// CHECK:  encoding: [0x3f]
+        	aas
+
+// CHECK: daa
+// CHECK:  encoding: [0x27]
+        	daa
+
+// CHECK: das
+// CHECK:  encoding: [0x2f]
+        	das
+
+// CHECK: retw	$31438
+// CHECK:  encoding: [0xc2,0xce,0x7a]
+        	retw	$0x7ace
+
+// CHECK: lretw	$31438
+// CHECK:  encoding: [0xca,0xce,0x7a]
+        	lretw	$0x7ace
+
+// CHECK: retw	$31438
+// CHECK:  encoding: [0xc2,0xce,0x7a]
+        	ret	$0x7ace
+
+// CHECK: lretw	$31438
+// CHECK:  encoding: [0xca,0xce,0x7a]
+        	lret	$0x7ace
+
+// CHECK: retl	$31438
+// CHECK:  encoding: [0x66,0xc2,0xce,0x7a]
+        	retl	$0x7ace
+
+// CHECK: lretl	$31438
+// CHECK:  encoding: [0x66,0xca,0xce,0x7a]
+        	lretl	$0x7ace
+
+// CHECK: bound	2(%eax), %bx
+// CHECK:  encoding: [0x67,0x62,0x58,0x02]
+        	bound	2(%eax),%bx
+
+// CHECK: bound	4(%ebx), %ecx
+// CHECK:  encoding: [0x67,0x66,0x62,0x4b,0x04]
+        	bound	4(%ebx),%ecx
+
+// CHECK: arpl	%bx, %bx
+// CHECK:  encoding: [0x63,0xdb]
+        	arpl	%bx,%bx
+
+// CHECK: arpl	%bx, 6(%ecx)
+// CHECK:  encoding: [0x67,0x63,0x59,0x06]
+        	arpl	%bx,6(%ecx)
+
+// CHECK: lgdtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x50,0x04]
+        	lgdtw	4(%eax)
+
+// CHECK: lgdtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x50,0x04]
+        	lgdt	4(%eax)
+
+// CHECK: lgdtl	4(%eax)
+// CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x50,0x04]
+        	lgdtl	4(%eax)
+
+// CHECK: lidtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x58,0x04]
+        	lidtw	4(%eax)
+
+// CHECK: lidtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x58,0x04]
+        	lidt	4(%eax)
+
+// CHECK: lidtl	4(%eax)
+// CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x58,0x04]
+        	lidtl	4(%eax)
+
+// CHECK: sgdtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x40,0x04]
+        	sgdtw	4(%eax)
+
+// CHECK: sgdtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x40,0x04]
+        	sgdt	4(%eax)
+
+// CHECK: sgdtl	4(%eax)
+// CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x40,0x04]
+        	sgdtl	4(%eax)
+
+// CHECK: sidtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x48,0x04]
+        	sidtw	4(%eax)
+
+// CHECK: sidtw	4(%eax)
+// CHECK:  encoding: [0x67,0x0f,0x01,0x48,0x04]
+        	sidt	4(%eax)
+
+// CHECK: sidtl	4(%eax)
+// CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x48,0x04]
+        	sidtl	4(%eax)
+
+// CHECK: fcompi	%st(2)
+// CHECK:  encoding: [0xdf,0xf2]
+        	fcompi	%st(2), %st
+
+// CHECK: fcompi	%st(2)
+// CHECK:  encoding: [0xdf,0xf2]
+        	fcompi	%st(2)
+
+// CHECK: fcompi
+// CHECK:  encoding: [0xdf,0xf1]
+        	fcompi
+
+// CHECK: fucompi	%st(2)
+// CHECK:  encoding: [0xdf,0xea]
+        	fucompi	%st(2),%st
+
+// CHECK: fucompi	%st(2)
+// CHECK:  encoding: [0xdf,0xea]
+        	fucompi	%st(2)
+
+// CHECK: fucompi
+// CHECK:  encoding: [0xdf,0xe9]
+        	fucompi
+
+// CHECK: fldcw	32493
+// CHECK:  encoding: [0xd9,0x2e,0xed,0x7e]
+        	fldcww	0x7eed
+
+// CHECK: fldcw	32493
+// CHECK:  encoding: [0xd9,0x2e,0xed,0x7e]
+        	fldcw	0x7eed
+
+// CHECK: fnstcw	32493
+// CHECK:  encoding: [0xd9,0x3e,0xed,0x7e]
+        	fnstcww	0x7eed
+
+// CHECK: fnstcw	32493
+// CHECK:  encoding: [0xd9,0x3e,0xed,0x7e]
+        	fnstcw	0x7eed
+
+// CHECK: wait
+// CHECK:  encoding: [0x9b]
+        	fstcww	0x7eed
+
+// CHECK: wait
+// CHECK:  encoding: [0x9b]
+        	fstcw	0x7eed
+
+// CHECK: fnstsw	32493
+// CHECK:  encoding: [0xdd,0x3e,0xed,0x7e]
+        	fnstsww	0x7eed
+
+// CHECK: fnstsw	32493
+// CHECK:  encoding: [0xdd,0x3e,0xed,0x7e]
+        	fnstsw	0x7eed
+
+// CHECK: wait
+// CHECK:  encoding: [0x9b]
+        	fstsww	0x7eed
+
+// CHECK: wait
+// CHECK:  encoding: [0x9b]
+        	fstsw	0x7eed
+
+// CHECK: verr	32493
+// CHECK:  encoding: [0x0f,0x00,0x26,0xed,0x7e]
+        	verrw	0x7eed
+
+// CHECK: verr	32493
+// CHECK:  encoding: [0x0f,0x00,0x26,0xed,0x7e]
+        	verr	0x7eed
+
+// CHECK: wait
+// CHECK:  encoding: [0x9b]
+        	fclex
+
+// CHECK: fnclex
+// CHECK:  encoding: [0xdb,0xe2]
+        	fnclex
+
+// CHECK: ud2
+// CHECK:  encoding: [0x0f,0x0b]
+        	ud2
+
+// CHECK: ud2
+// CHECK:  encoding: [0x0f,0x0b]
+        	ud2a
+
+// CHECK: ud2b
+// CHECK:  encoding: [0x0f,0xb9]
+        	ud2b
+
+// CHECK: loope 0
+// CHECK: encoding: [0xe1,A]
+	loopz 0
+
+// CHECK: loopne 0
+// CHECK: encoding: [0xe0,A]
+	loopnz 0
+
+// CHECK: outsb (%si), %dx # encoding: [0x6e]
+// CHECK: outsb
+// CHECK: outsb
+	outsb
+	outsb	%ds:(%si), %dx
+	outsb	(%si), %dx
+
+// CHECK: outsw (%si), %dx # encoding: [0x6f]
+// CHECK: outsw
+// CHECK: outsw
+	outsw
+	outsw	%ds:(%si), %dx
+	outsw	(%si), %dx
+
+// CHECK: outsl (%si), %dx # encoding: [0x66,0x6f]
+// CHECK: outsl
+	outsl
+	outsl	%ds:(%si), %dx
+	outsl	(%si), %dx
+
+// CHECK: insb %dx, %es:(%di) # encoding: [0x6c]
+// CHECK: insb
+	insb
+	insb	%dx, %es:(%di)
+
+// CHECK: insw %dx, %es:(%di) # encoding: [0x6d]
+// CHECK: insw
+	insw
+	insw	%dx, %es:(%di)
+
+// CHECK: insl %dx, %es:(%di) # encoding: [0x66,0x6d]
+// CHECK: insl
+	insl
+	insl	%dx, %es:(%di)
+
+// CHECK: movsb (%si), %es:(%di) # encoding: [0xa4]
+// CHECK: movsb
+// CHECK: movsb
+	movsb
+	movsb	%ds:(%si), %es:(%di)
+	movsb	(%si), %es:(%di)
+
+// CHECK: movsw (%si), %es:(%di) # encoding: [0xa5]
+// CHECK: movsw
+// CHECK: movsw
+	movsw
+	movsw	%ds:(%si), %es:(%di)
+	movsw	(%si), %es:(%di)
+
+// CHECK: movsl (%si), %es:(%di) # encoding: [0x66,0xa5]
+// CHECK: movsl
+// CHECK: movsl
+	movsl
+	movsl	%ds:(%si), %es:(%di)
+	movsl	(%si), %es:(%di)
+
+// CHECK: lodsb (%si), %al # encoding: [0xac]
+// CHECK: lodsb
+// CHECK: lodsb
+// CHECK: lodsb
+// CHECK: lodsb
+	lodsb
+	lodsb	%ds:(%si), %al
+	lodsb	(%si), %al
+	lods	%ds:(%si), %al
+	lods	(%si), %al
+
+// CHECK: lodsw (%si), %ax # encoding: [0xad]
+// CHECK: lodsw
+// CHECK: lodsw
+// CHECK: lodsw
+// CHECK: lodsw
+	lodsw
+	lodsw	%ds:(%si), %ax
+	lodsw	(%si), %ax
+	lods	%ds:(%si), %ax
+	lods	(%si), %ax
+
+// CHECK: lodsl (%si), %eax # encoding: [0x66,0xad]
+// CHECK: lodsl
+// CHECK: lodsl
+// CHECK: lodsl
+// CHECK: lodsl
+	lodsl
+	lodsl	%ds:(%si), %eax
+	lodsl	(%si), %eax
+	lods	%ds:(%si), %eax
+	lods	(%si), %eax
+
+// CHECK: stosb %al, %es:(%di) # encoding: [0xaa]
+// CHECK: stosb
+// CHECK: stosb
+	stosb
+	stosb	%al, %es:(%di)
+	stos	%al, %es:(%di)
+
+// CHECK: stosw %ax, %es:(%di) # encoding: [0xab]
+// CHECK: stosw
+// CHECK: stosw
+	stosw
+	stosw	%ax, %es:(%di)
+	stos	%ax, %es:(%di)
+
+// CHECK: stosl %eax, %es:(%di) # encoding: [0x66,0xab]
+// CHECK: stosl
+// CHECK: stosl
+	stosl
+	stosl	%eax, %es:(%di)
+	stos	%eax, %es:(%di)
+
+// CHECK: strw
+// CHECK: encoding: [0x0f,0x00,0xc8]
+	str %ax
+
+// CHECK: strl
+// CHECK: encoding: [0x66,0x0f,0x00,0xc8]
+	str %eax
+
+
+// CHECK: fsubp
+// CHECK: encoding: [0xde,0xe1]
+fsubp %st,%st(1)
+
+// CHECK: fsubp	%st(2)
+// CHECK: encoding: [0xde,0xe2]
+fsubp   %st, %st(2)
+
+// CHECK: xchgl %eax, %eax
+// CHECK: encoding: [0x66,0x90]
+xchgl %eax, %eax
+
+// CHECK: xchgw %ax, %ax
+// CHECK: encoding: [0x90]
+xchgw %ax, %ax
+
+// CHECK: xchgl %ecx, %eax
+// CHECK: encoding: [0x66,0x91]
+xchgl %ecx, %eax
+
+// CHECK: xchgl %ecx, %eax
+// CHECK: encoding: [0x66,0x91]
+xchgl %eax, %ecx
+
+// CHECK: retw
+// CHECK: encoding: [0xc3]
+retw
+
+// CHECK: retl
+// CHECK: encoding: [0x66,0xc3]
+retl
+
+// CHECK: lretw
+// CHECK: encoding: [0xcb]
+lretw
+
+// CHECK: lretl
+// CHECK: encoding: [0x66,0xcb]
+lretl