VPBROADCASTB/VPBROADCASTW/VPBROADCASTD/VPBROADCASTQ — Load With Broadcast Integer Data From General Purpose Register

1. EVEX.W in non-64 bit is ignored; the instruction behaves as if the W0 version is used.

Instruction Operand Encoding ¶

Description ¶

Broadcasts a 8-bit, 16-bit, 32-bit or 64-bit value from a general-purpose register (the second operand) to all the locations in the destination vector register (the first operand) using the writemask k1.

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

Operation ¶

VPBROADCASTB (EVEX encoded versions) ¶

(KL, VL) = (16, 128), (32, 256), (64, 512)
FOR j := 0 TO KL-1
    i := j * 8
    IF k1[j] OR *no writemask*
        THEN DEST[i+7:i] := SRC[7:0]
        ELSE
            IF *merging-masking*
                        ; merging-masking
                THEN *DEST[i+7:i] remains unchanged*
                ELSE
                        ; zeroing-masking
                    DEST[i+7:i] := 0
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPBROADCASTW (EVEX encoded versions) ¶

(KL, VL) = (8, 128), (16, 256), (32, 512)
FOR j := 0 TO KL-1
    i := j * 16
    IF k1[j] OR *no writemask*
        THEN DEST[i+15:i] := SRC[15:0]
        ELSE
            IF *merging-masking*
                        ; merging-masking
                THEN *DEST[i+15:i] remains unchanged*
                ELSE
                        ; zeroing-masking
                    DEST[i+15:i] := 0
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPBROADCASTD (EVEX encoded versions) ¶

(KL, VL) = (4, 128), (8, 256), (16, 512)
FOR j := 0 TO KL-1
    i := j * 32
    IF k1[j] OR *no writemask*
        THEN DEST[i+31:i] := SRC[31:0]
        ELSE
            IF *merging-masking*
                        ; merging-masking
                THEN *DEST[i+31:i] remains unchanged*
                ELSE
                        ; zeroing-masking
                    DEST[i+31:i] := 0
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VPBROADCASTQ (EVEX encoded versions) ¶

(KL, VL) = (2, 128), (4, 256), (8, 512)
FOR j := 0 TO KL-1
    i := j * 64
    IF k1[j] OR *no writemask*
        THEN DEST[i+63:i] := SRC[63:0]
        ELSE
            IF *merging-masking*
                THEN *DEST[i+63:i] remains unchanged*
                ELSE ; zeroing-masking
                    DEST[i+63:i] := 0
            FI
    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

Intel C/C++ Compiler Intrinsic Equivalent ¶

VPBROADCASTB __m512i _mm512_mask_set1_epi8(__m512i s, __mmask64 k, int a);

VPBROADCASTB __m512i _mm512_maskz_set1_epi8( __mmask64 k, int a);

VPBROADCASTB __m256i _mm256_mask_set1_epi8(__m256i s, __mmask32 k, int a);

VPBROADCASTB __m256i _mm256_maskz_set1_epi8( __mmask32 k, int a);

VPBROADCASTB __m128i _mm_mask_set1_epi8(__m128i s, __mmask16 k, int a);

VPBROADCASTB __m128i _mm_maskz_set1_epi8( __mmask16 k, int a);

VPBROADCASTD __m512i _mm512_mask_set1_epi32(__m512i s, __mmask16 k, int a);

VPBROADCASTD __m512i _mm512_maskz_set1_epi32( __mmask16 k, int a);

VPBROADCASTD __m256i _mm256_mask_set1_epi32(__m256i s, __mmask8 k, int a);

VPBROADCASTD __m256i _mm256_maskz_set1_epi32( __mmask8 k, int a);

VPBROADCASTD __m128i _mm_mask_set1_epi32(__m128i s, __mmask8 k, int a);

VPBROADCASTD __m128i _mm_maskz_set1_epi32( __mmask8 k, int a);

VPBROADCASTQ __m512i _mm512_mask_set1_epi64(__m512i s, __mmask8 k, __int64 a);

VPBROADCASTQ __m512i _mm512_maskz_set1_epi64( __mmask8 k, __int64 a);

VPBROADCASTQ __m256i _mm256_mask_set1_epi64(__m256i s, __mmask8 k, __int64 a);

VPBROADCASTQ __m256i _mm256_maskz_set1_epi64( __mmask8 k, __int64 a);

VPBROADCASTQ __m128i _mm_mask_set1_epi64(__m128i s, __mmask8 k, __int64 a);

VPBROADCASTQ __m128i _mm_maskz_set1_epi64( __mmask8 k, __int64 a);

VPBROADCASTW __m512i _mm512_mask_set1_epi16(__m512i s, __mmask32 k, int a);

VPBROADCASTW __m512i _mm512_maskz_set1_epi16( __mmask32 k, int a);

VPBROADCASTW __m256i _mm256_mask_set1_epi16(__m256i s, __mmask16 k, int a);

VPBROADCASTW __m256i _mm256_maskz_set1_epi16( __mmask16 k, int a);

VPBROADCASTW __m128i _mm_mask_set1_epi16(__m128i s, __mmask8 k, int a);

VPBROADCASTW __m128i _mm_maskz_set1_epi16( __mmask8 k, int a);

Exceptions ¶

EVEX-encoded instructions, see Table 2-55, “Type E7NM Class Exception Conditions.”

Additionally: