_mm512_extpackstorelo_epi64
Classification
KNC, Store, CPUID Test: KNCNI
Header File
Instruction
VPACKSTORELQ m512, zmm
Synopsis
_mm512_extpackstorelo_epi64(void * mt, __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.
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
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
ENDFOR
dst[MAX:512] := 0