MOVQ (AX), CR3                  // ERROR "invalid instruction"
	MOVQ (AX), CR4                  // ERROR "invalid instruction"
	MOVQ (AX), CR8                  // ERROR "invalid instruction"
	MOVQ DR0, (AX)                  // ERROR "invalid instruction"
	MOVQ DR2, (AX)                  // ERROR "invalid instruction"
	MOVQ DR3, (AX)                  // ERROR "invalid instruction"

TEXT asmtest(SB),DUPOK|NOSPLIT,$0
	// Instructions that were encoded with BYTE sequences.
	// Included to simplify validation of CL that fixed that.
	MOVQ (AX), M0  // 0f6f00
	MOVQ M0, 8(SP) // 0f7f442408
	MOVQ 8(SP), M0 // 0f6f442408
	MOVQ M0, (AX)  // 0f7f00
	MOVQ M0, (BX)  // 0f7f03
	// On non-64bit arch, Go asm allowed uint32 offsets instead of int32.
	// These tests check that property for backwards-compatibility.

	// Intel pseudonyms for our own renamings.
	PADDD	M2, M1 // PADDL M2, M1
	MOVDQ2Q	X1, M1 // MOVQ X1, M1
	MOVNTDQ	X1, (AX)	// MOVNTO X1, (AX)
	MOVOA	(AX), X1	// MOVO (AX), X1

// Tests for SP indexed addresses.
	MOVQ	foo(SP)(AX*1), BX		// 488b1c04
	MOVQ	foo+32(SP)(CX*2), DX		// 488b544c20
	MOVQ	foo+32323(SP)(R8*4), R9		// 4e8b8c84437e0000
	MOVL	foo(SP)(SI*8), DI		// 8b3cf4

	CMPL runtime·writeBarrier(SB), $0
	MOVQ (R15), AX // ERROR "when dynamic linking, R15 is clobbered by a global variable access and is used here"
	RET
TEXT ·a18(SB), 0, $0-0
	CMPL runtime·writeBarrier(SB), $0
	MOVQ (CX)(R15*1), AX // ERROR "when dynamic linking, R15 is clobbered by a global variable access and is used here"
	RET
TEXT ·a19(SB), 0, $0-0
	CMPL runtime·writeBarrier(SB), $0

  x.go:3		0x10501c0		65488b0c2530000000	MOVQ GS:0x30, CX
  x.go:3		0x10501c9		483b6110		CMPQ 0x10(CX), SP
  x.go:3		0x10501cd		7634			JBE 0x1050203
  x.go:3		0x10501cf		4883ec10		SUBQ $0x10, SP
  x.go:3		0x10501d3		48896c2408		MOVQ BP, 0x8(SP)
  x.go:3		0x10501d8		488d6c2408		LEAQ 0x8(SP), BP
  x.go:4		0x10501dd		e86e45fdff		CALL runtime.printlock(SB)
  x.go:4		0x10501e2		48c7042403000000	MOVQ $0x3, 0(SP)

	//TODO: MOVW 0x123456789abcdef1, AX     // 66a1f1debc9a78563412
	MOVQ DX, CR2                            // 0f22d2
	MOVQ R11, CR2                           // 410f22d3
	MOVQ DX, CR3                            // 0f22da
	MOVQ R11, CR3                           // 410f22db
	MOVQ DX, DR2                            // 0f23d2
	MOVQ R11, DR2                           // 410f23d3
	MOVQ DX, DR3                            // 0f23da

	// Make sure MOV CR/DR continues to work after changing its movtabs.
	MOVQ CR0, AX // 0f20c0
	MOVQ CR0, DX // 0f20c2
	MOVQ CR4, DI // 0f20e7
	MOVQ AX, CR0 // 0f22c0
	MOVQ DX, CR0 // 0f22c2
	MOVQ DI, CR4 // 0f22e7
	MOVQ DR0, AX // 0f21c0
	MOVQ DR6, DX // 0f21f2
	MOVQ DR7, SI // 0f21fe
	// Test other movtab entries.
	PUSHQ GS // 0fa8
	PUSHQ FS // 0fa0
	POPQ FS  // 0fa1