_mm512_extloadunpacklo_pd
Classification
KNC, Load, CPUID Test: KNCNI
Header File
immintrin.h
Instruction
VLOADUNPACKLPD zmm, m512
Synopsis
 _mm512_extloadunpacklo_pd(__m512d src, void const * mt, _MM_UPCONV_PD_ENUM conv, int hint);
Description
Loads the low-64-byte-aligned portion of the quadword stream starting at element-aligned address mt, up-converted depending on the value of "conv", and expanded into packed double-precision (64-bit) floating-point elements in "dst". The initial values of "dst" are copied from "src". Only those converted quad that occur before first 64-byte-aligned address following "mt" are loaded. Elements in the resulting vector that do not map to those quadwords are taken from "src". "hint" indicates to the processor whether the loaded data is non-temporal.
Operation
DEFINE UPCONVERT(addr, offset, convertTo) {
	CASE conv OF
	_MM_UPCONV_PD_NONE:
		RETURN MEM[addr + 8*offset]
	ESAC
}
DEFINE UPCONVERTSIZE(convertTo) {
	CASE conv OF
	_MM_UPCONV_PD_NONE:
		RETURN 8
	ESAC
}
dst[511:0] := src[511:0]
loadOffset := 0
upSize := UPCONVERTSIZE(conv)
addr := mt
FOR j := 0 to 7
	i := j*64
	dst[i+63:i] := UPCONVERT(addr, loadOffset, conv)
	loadOffset := loadOffset + 1
	IF (mt + loadOffset * upSize) % 64 == 0
		BREAK
	FI
ENDFOR
dst[MAX:512] := 0