(ORQ x (MOVQconst [c])) && is32Bit(c) => (ORQconst [int32(c)] x)
(ORQ x (MOVLconst [c])) => (ORQconst [c] x)
(ORL x (MOVLconst [c])) => (ORLconst [c] x)

(XORQ x (MOVQconst [c])) && is32Bit(c) => (XORQconst [int32(c)] x)
(XORL x (MOVLconst [c])) => (XORLconst [c] x)

(SHLQ x (MOV(Q|L)const [c])) => (SHLQconst [int8(c&63)] x)
(SHLL x (MOV(Q|L)const [c])) => (SHLLconst [int8(c&31)] x)

(SHRQ x (MOV(Q|L)const [c])) => (SHRQconst [int8(c&63)] x)

#endif

#ifdef NEED_EXT_FEATURES_CX
	MOVL	$0x80000001, AX
	CPUID
	ANDL	$NEED_EXT_FEATURES_CX, CX
	CMPL	CX, $NEED_EXT_FEATURES_CX
	JNE	bad_cpu
#endif

#ifdef NEED_OS_SUPPORT_AX
	XORL    CX, CX
	XGETBV
	ANDL	$NEED_OS_SUPPORT_AX, AX
	CMPL	AX, $NEED_OS_SUPPORT_AX
	JNE	bad_cpu
#endif

#ifdef NEED_DARWIN_SUPPORT
	MOVQ	$commpage64_version, BX