MOVQ	p_len+16(FP),	DX
	SHRQ	$6,		DX
	SHLQ	$6,		DX

	LEAQ	(SI)(DX*1),	DI
	MOVL	(0*4)(BP),	AX
	MOVL	(1*4)(BP),	BX
	MOVL	(2*4)(BP),	CX
	MOVL	(3*4)(BP),	DX
	MOVL	(4*4)(BP),	BP

	CMPQ	SI,		DI
	JEQ	end

loop:
	MOVL	AX,	R11
	MOVL	BX,	R12
	MOVL	CX,	R13
	MOVL	DX,	R14
	MOVL	BP,	R15

	ROUND1(AX, BX, CX, DX, BP, 0)
	ROUND1(BP, AX, BX, CX, DX, 1)

	MOVQ	8(BX), SI		// arg 2 len
	MOVL	16(BX), DX		// arg 3 prot
	MOVL	20(BX), CX		// arg 4 flags
	MOVL	24(BX), R8		// arg 5 fid
	MOVL	28(BX), R9		// arg 6 offset
	CALL	libc_mmap(SB)
	XORL	DX, DX
	CMPQ	AX, $-1
	JNE	ok
	CALL	libc_errno(SB)
	MOVLQSX	(AX), DX		// errno
	XORQ	AX, AX
ok:
	MOVQ	AX, 32(BX)
	MOVQ	DX, 40(BX)
	RET

TEXT runtime·munmap_trampoline(SB),NOSPLIT,$0

	LFDUX: "FMOVDU", STFDUX: "FMOVDU",
	LFSX: "FMOVS", STFSX: "FMOVS",
	LFSU: "FMOVSU", STFSU: "FMOVSU",
	LFSUX: "FMOVSU", STFSUX: "FMOVSU",
	CMPD: "CMP", CMPDI: "CMP",
	CMPW: "CMPW", CMPWI: "CMPW",
	CMPLD: "CMPU", CMPLDI: "CMPU",
	CMPLW: "CMPWU", CMPLWI: "CMPWU",
	MTSPR: "MOVD", MFSPR: "MOVD", // the width is ambiguous for SPRs
	B:  "BR",
	BL: "CALL",

			},
			faultOnNilArg0: true,
			faultOnNilArg1: true,
		},

		// (InvertFlags (CMPQ a b)) == (CMPQ b a)
		// So if we want (SETL (CMPQ a b)) but we can't do that because a is a constant,
		// then we do (SETL (InvertFlags (CMPQ b a))) instead.
		// Rewrites will convert this to (SETG (CMPQ b a)).
		// InvertFlags is a pseudo-op which can't appear in assembly output.

	ACELFBR
	ACDLFBR
	ACELGBR
	ACDLGBR

	// convert from float/float64 to uint32/uint64
	ACLFEBR
	ACLFDBR
	ACLGEBR
	ACLGDBR

	// compare
	ACMP
	ACMPU
	ACMPW
	ACMPWU

	// test under mask
	ATMHH
	ATMHL
	ATMLH
	ATMLL

	// insert program mask
	AIPM

	// set program mask
	ASPM

	// compare and swap
	ACS
	ACSG

	AVSRD
	AVSA
	AVSRAB
	AVSRAH
	AVSRAW
	AVSRAD
	AVSOI
	AVSLDOI
	AVCLZ
	AVCLZB
	AVCLZH
	AVCLZW
	AVCLZD
	AVPOPCNT
	AVPOPCNTB
	AVPOPCNTH
	AVPOPCNTW
	AVPOPCNTD
	AVCMPEQ
	AVCMPEQUB
	AVCMPEQUBCC
	AVCMPEQUH
	AVCMPEQUHCC
	AVCMPEQUW
	AVCMPEQUWCC
	AVCMPEQUD
	AVCMPEQUDCC
	AVCMPGT
	AVCMPGTUB
	AVCMPGTUBCC
	AVCMPGTUH
	AVCMPGTUHCC
	AVCMPGTUW

	CMP R3, R4                      // 7c232000
	CMP R3, R0                      // 7c230000
	CMP R3, R0, CR1                 // CMP R3,CR1,R0   // 7ca30000
	CMPU R3, R4                     // 7c232040
	CMPU R3, R0                     // 7c230040
	CMPU R3, R0, CR2                // CMPU R3,CR2,R0  // 7d230040
	CMPW R3, R4                     // 7c032000
	CMPW R3, R0                     // 7c030000

	CMP	R1, R2                 // b9200012
	CMP	R3, $32767             // a73f7fff
	CMP	R3, $32768             // c23c00008000
	CMP	R3, $-2147483648       // c23c80000000
	CMPU	R4, R5                 // b9210045
	CMPU	R6, $4294967295        // c26effffffff
	CMPW	R7, R8                 // 1978
	CMPW	R9, $-32768            // a79e8000
	CMPW	R9, $-32769            // c29dffff7fff

(Eq32 x y) => (SGTU (MOVVconst [1]) (XOR (ZeroExt32to64 x) (ZeroExt32to64 y)))
(Eq64 x y) => (SGTU (MOVVconst [1]) (XOR x y))
(EqPtr x y) => (SGTU (MOVVconst [1]) (XOR x y))
(Eq(32|64)F x y) => (FPFlagTrue (CMPEQ(F|D) x y))

(Neq8 x y)  => (SGTU (XOR (ZeroExt8to64 x) (ZeroExt8to64 y)) (MOVVconst [0]))
(Neq16 x y) => (SGTU (XOR (ZeroExt16to32 x) (ZeroExt16to64 y)) (MOVVconst [0]))

	// The goal here is stability in the face
	// of unrelated changes elsewhere in the compiler.
	if c := x.AuxInt - y.AuxInt; c != 0 {
		return c < 0
	}
	if cmp := x.Type.Compare(y.Type); cmp != types.CMPeq {
		return cmp == types.CMPlt
	}
	return x.ID < y.ID
}

func (op Op) isLoweredGetClosurePtr() bool {
	switch op {