VPMOVB2M/VPMOVW2M/VPMOVD2M/VPMOVQ2M—Convert a Vector Register to a Mask

Opcode/Instruction Op/En 64/32 bit Mode Support CPUID Feature Flag Description
EVEX.128.F3.0F38.W0 29 /r VPMOVB2M k1, xmm1 RM V/V AVX512VL AVX512BW Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding byte in XMM1.
EVEX.256.F3.0F38.W0 29 /r VPMOVB2M k1, ymm1 RM V/V AVX512VL AVX512BW Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding byte in YMM1.
EVEX.512.F3.0F38.W0 29 /r VPMOVB2M k1, zmm1 RM V/V AVX512BW Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding byte in ZMM1.
EVEX.128.F3.0F38.W1 29 /r VPMOVW2M k1, xmm1 RM V/V AVX512VL AVX512BW Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding word in XMM1.
EVEX.256.F3.0F38.W1 29 /r VPMOVW2M k1, ymm1 RM V/V AVX512VL AVX512BW Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding word in YMM1.
EVEX.512.F3.0F38.W1 29 /r VPMOVW2M k1, zmm1 RM V/V AVX512BW Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding word in ZMM1.
EVEX.128.F3.0F38.W0 39 /r VPMOVD2M k1, xmm1 RM V/V AVX512VL AVX512DQ Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding doubleword in XMM1.
EVEX.256.F3.0F38.W0 39 /r VPMOVD2M k1, ymm1 RM V/V AVX512VL AVX512DQ Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding doubleword in YMM1.
EVEX.512.F3.0F38.W0 39 /r VPMOVD2M k1, zmm1 RM V/V AVX512DQ Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding doubleword in ZMM1.
EVEX.128.F3.0F38.W1 39 /r VPMOVQ2M k1, xmm1 RM V/V AVX512VL AVX512DQ Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding quadword in XMM1.
EVEX.256.F3.0F38.W1 39 /r VPMOVQ2M k1, ymm1 RM V/V AVX512VL AVX512DQ Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding quadword in YMM1.
EVEX.512.F3.0F38.W1 39 /r VPMOVQ2M k1, zmm1 RM V/V AVX512DQ Sets each bit in k1 to 1 or 0 based on the value of the most significant bit of the corresponding quadword in ZMM1.

Instruction Operand Encoding

Op/En Operand 1 Operand 2 Operand 3 Operand 4
RM ModRM:reg (w) ModRM:r/m (r) NA NA

Description

Converts a vector register to a mask register. Each element in the destination register is set to 1 or 0 depending on the value of most significant bit of the corresponding element in the source register.

The source operand is a ZMM/YMM/XMM register. The destination operand is a mask register.

EVEX.vvvv is reserved and must be 1111b otherwise instructions will #UD.

Operation

VPMOVB2M (EVEX encoded versions)

(KL, VL) = (16, 128), (32, 256), (64, 512)

FOR j := 0 TO KL-1

i := j * 8

IF SRC[i+7]

THEN

DEST[j] := 1

ELSE

DEST[j] := 0

FI;

ENDFOR

DEST[MAX_KL-1:KL] := 0

VPMOVW2M (EVEX encoded versions)

(KL, VL) = (8, 128), (16, 256), (32, 512)

FOR j := 0 TO KL-1

i := j * 16

IF SRC[i+15]

THEN

DEST[j] := 1

ELSE

DEST[j] := 0

FI;

ENDFOR

DEST[MAX_KL-1:KL] := 0

VPMOVD2M (EVEX encoded versions)

(KL, VL) = (4, 128), (8, 256), (16, 512)

FOR j := 0 TO KL-1

i := j * 32

IF SRC[i+31]

THEN

DEST[j] := 1

ELSE

DEST[j] := 0

FI;

ENDFOR

DEST[MAX_KL-1:KL] := 0

VPMOVQ2M (EVEX encoded versions)

(KL, VL) = (2, 128), (4, 256), (8, 512)

FOR j := 0 TO KL-1

i := j * 64

IF SRC[i+63]

THEN

DEST[j] := 1

ELSE

DEST[j] := 0

FI;

ENDFOR

DEST[MAX_KL-1:KL] := 0

Intel C/C++ Compiler Intrinsic Equivalents

VPMPOVB2M __mmask64 _mm512_movepi8_mask( __m512i );

VPMPOVD2M __mmask16 _mm512_movepi32_mask( __m512i );

VPMPOVQ2M __mmask8 _mm512_movepi64_mask( __m512i );

VPMPOVW2M __mmask32 _mm512_movepi16_mask( __m512i );

VPMPOVB2M __mmask32 _mm256_movepi8_mask( __m256i );

VPMPOVD2M __mmask8 _mm256_movepi32_mask( __m256i );

VPMPOVQ2M __mmask8 _mm256_movepi64_mask( __m256i );

VPMPOVW2M __mmask16 _mm256_movepi16_mask( __m256i );

VPMPOVB2M __mmask16 _mm_movepi8_mask( __m128i );

VPMPOVD2M __mmask8 _mm_movepi32_mask( __m128i );

VPMPOVQ2M __mmask8 _mm_movepi64_mask( __m128i );

VPMPOVW2M __mmask8 _mm_movepi16_mask( __m128i );

SIMD Floating-Point Exceptions

None

Other Exceptions

EVEX-encoded instruction, see Table 2-55, “Type E7NM Class Exception Conditions”; additionally:
If EVEX.vvvv != 1111B.