// Mixed-width sign- and zero-extending moves plus PMOVMSKB, the spellings
// GOROOT's runtime and bytealg kernels use.  Every result is folded back so
// no instruction is dead.

#include "textflag.h"

// func widen(p *byte) uint64
TEXT ·widen(SB), NOSPLIT, $0-16
	MOVBQZX 0(DI), AX
	MOVWQZX 2(DI), CX
	ADDQ    CX, AX
	MOVLQZX 4(DI), DX
	ADDQ    DX, AX
	MOVBQSX 8(DI), R8
	ADDQ    R8, AX
	MOVWQSX 12(DI), R9
	ADDQ    R9, AX
	MOVBLSX 16(DI), R10
	ADDL    R10, AX
	MOVLQSX 20(DI), R11
	ADDQ    R11, AX
	MOVQ    AX, ret+8(FP)
	RET

// func widenw(p *byte) int32
TEXT ·widenw(SB), NOSPLIT, $0-16
	MOVBWZX 0(DI), AX
	MOVBWSX 1(DI), CX
	ADDL    CX, AX
	MOVLQZX AX, DX
	MOVL    DX, ret+8(FP)
	RET

// func mask(x *XMM) int
TEXT ·mask(SB), NOSPLIT, $0-16
	MOVOU    0(DI), X1
	PMOVMSKB X1, AX
	MOVQ     AX, ret+8(FP)
	RET