_mm512_mask_extpackstorelo_epi64
Classification
KNC, Store, CPUID Test: KNCNI
Header File
immintrin.h
Instruction
VPACKSTORELQ m512 {k}, zmm
Synopsis
 _mm512_mask_extpackstorelo_epi64(void * mt, __mmask8 k, __m512i v1, _MM_DOWNCONV_EPI64_ENUM conv, int hint);
Description
Down-converts and stores packed 64-bit integer elements of "v1" into a quadword stream according to "conv" at a logically mapped starting address "mt", storing the low-64-byte elements of that stream (those elements of the stream that map before the first 64-byte-aligned address follwing "mt"). "hint" indicates to the processor whether the data is non-temporal. Elements are stored to memory according to element selector "k" (elements are skipped whent he corresponding mask bit is not set).
Operation
DEFINE DOWNCONVERT(element, convertTo) {
	CASE convertTo OF
	_MM_UPCONV_EPI64_NONE:
		RETURN element[63:0]
	ESAC
}
DEFINE DOWNCONVERTSIZE(convertTo) {
	CASE convertTo OF
	_MM_UPCONV_EPI64_NONE:
		RETURN 8
	ESAC
}
storeOffset := 0
downSize := DOWNCONVERTSIZE(conv)
addr := mt
FOR j := 0 to 7
	IF k[j]
		i := j*63
		tmp := DOWNCONVERT(v1[i+63:i], conv)
		storeAddr := addr + storeOffset * downSize
		CASE downSize OF
		8: MEM[storeAddr] := tmp[63:0]
		ESAC
		storeOffset := storeOffset + 1
		IF ((addr + storeOffset * downSize) % 64) == 0
			BREAK
		FI
	FI
ENDFOR
dst[MAX:512] := 0