PMINUD/PMINUQ — Minimum of Packed Unsigned Integers
| Opcode/Instruction | Op/E n | 64/32 bit Mode Support | CPUID Feature Flag | Description |
|---|---|---|---|---|
| 66 0F 38 3B /r PMINUD xmm1, xmm2/m128 | A | V/V | SSE4_1 | Compare packed unsigned dword integers in xmm1 and xmm2/m128 and store packed minimum values in xmm1. |
| VEX.128.66.0F38.WIG 3B /r VPMINUD xmm1, xmm2, xmm3/m128 | B | V/V | AVX | Compare packed unsigned dword integers in xmm2 and xmm3/m128 and store packed minimum values in xmm1. |
| VEX.256.66.0F38.WIG 3B /r VPMINUD ymm1, ymm2, ymm3/m256 | B | V/V | AVX2 | Compare packed unsigned dword integers in ymm2 and ymm3/m256 and store packed minimum values in ymm1. |
| EVEX.128.66.0F38.W0 3B /r VPMINUD xmm1 {k1}{z}, xmm2, xmm3/m128/m32bcst | C | V/V | AVX512VL AVX512F | Compare packed unsigned dword integers in xmm2 and xmm3/m128/m32bcst and store packed minimum values in xmm1 under writemask k1. |
| EVEX.256.66.0F38.W0 3B /r VPMINUD ymm1 {k1}{z}, ymm2, ymm3/m256/m32bcst | C | V/V | AVX512VL AVX512F | Compare packed unsigned dword integers in ymm2 and ymm3/m256/m32bcst and store packed minimum values in ymm1 under writemask k1. |
| EVEX.512.66.0F38.W0 3B /r VPMINUD zmm1 {k1}{z}, zmm2, zmm3/m512/m32bcst | C | V/V | AVX512F | Compare packed unsigned dword integers in zmm2 and zmm3/m512/m32bcst and store packed minimum values in zmm1 under writemask k1. |
| EVEX.128.66.0F38.W1 3B /r VPMINUQ xmm1 {k1}{z}, xmm2, xmm3/m128/m64bcst | C | V/V | AVX512VL AVX512F | Compare packed unsigned qword integers in xmm2 and xmm3/m128/m64bcst and store packed minimum values in xmm1 under writemask k1. |
| EVEX.256.66.0F38.W1 3B /r VPMINUQ ymm1 {k1}{z}, ymm2, ymm3/m256/m64bcst | C | V/V | AVX512VL AVX512F | Compare packed unsigned qword integers in ymm2 and ymm3/m256/m64bcst and store packed minimum values in ymm1 under writemask k1. |
| EVEX.512.66.0F38.W1 3B /r VPMINUQ zmm1 {k1}{z}, zmm2, zmm3/m512/m64bcst | C | V/V | AVX512F | Compare packed unsigned qword integers in zmm2 and zmm3/m512/m64bcst and store packed minimum values in zmm1 under writemask k1. |
Instruction Operand Encoding ¶
| Op/En | Tuple Type | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
|---|---|---|---|---|---|
| A | N/A | ModRM:reg (r, w) | ModRM:r/m (r) | N/A | N/A |
| B | N/A | ModRM:reg (w) | VEX.vvvv (r) | ModRM:r/m (r) | N/A |
| C | Full | ModRM:reg (w) | EVEX.vvvv (r) | ModRM:r/m (r) | N/A |
Description ¶
Performs a SIMD compare of the packed unsigned dword/qword integers in the second source operand and the first source operand and returns the minimum value for each pair of integers to the destination operand.
128-bit Legacy SSE version: The first source and destination operands are XMM registers. The second source operand is an XMM register or a 128-bit memory location. Bits (MAXVL-1:128) of the corresponding destination register remain unchanged.
VEX.128 encoded version: The first source and destination operands are XMM registers. The second source operand is an XMM register or a 128-bit memory location. Bits (MAXVL-1:128) of the corresponding destination register are zeroed.
VEX.256 encoded version: The second source operand can be an YMM register or a 256-bit memory location. The first source and destination operands are YMM registers. Bits (MAXVL-1:256) of the corresponding destination register are zeroed.
EVEX encoded versions: The first source operand is a ZMM/YMM/XMM register; The second source operand is a ZMM/YMM/XMM register, a 512/256/128-bit memory location or a 512/256/128-bit vector broadcasted from a 32/64-bit memory location. The destination operand is conditionally updated based on writemask k1.
Operation ¶
PMINUD (128-bit Legacy SSE Version) ¶
PMINUD instruction for 128-bit operands:
IF DEST[31:0] < SRC[31:0] THEN
DEST[31:0] := DEST[31:0];
ELSE
DEST[31:0] := SRC[31:0]; FI;
(* Repeat operation for 2nd through 7th words in source and destination operands *)
IF DEST[127:96] < SRC[127:96] THEN
DEST[127:96] := DEST[127:96];
ELSE
DEST[127:96] := SRC[127:96]; FI;
DEST[MAXVL-1:128] (Unmodified)
VPMINUD (VEX.128 Encoded Version) ¶
VPMINUD instruction for 128-bit operands:
IF SRC1[31:0] < SRC2[31:0] THEN
DEST[31:0] := SRC1[31:0];
ELSE
DEST[31:0] := SRC2[31:0]; FI;
(* Repeat operation for 2nd through 3rd dwords in source and destination operands *)
IF SRC1[127:96] < SRC2[127:96] THEN
DEST[127:96] := SRC1[127:96];
ELSE
DEST[127:96] := SRC2[127:96]; FI;
DEST[MAXVL-1:128] := 0
VPMINUD (VEX.256 Encoded Version) ¶
VPMINUD instruction for 128-bit operands:
IF SRC1[31:0] < SRC2[31:0] THEN
DEST[31:0] := SRC1[31:0];
ELSE
DEST[31:0] := SRC2[31:0]; FI;
(* Repeat operation for 2nd through 7th dwords in source and destination operands *)
IF SRC1[255:224] < SRC2[255:224] THEN
DEST[255:224] := SRC1[255:224];
ELSE
DEST[255:224] := SRC2[255:224]; FI;
DEST[MAXVL-1:256] := 0
VPMINUD (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
IF (EVEX.b = 1) AND (SRC2 *is memory*)
THEN
IF SRC1[i+31:i] < SRC2[31:0]
THEN DEST[i+31:i] := SRC1[i+31:i];
ELSE DEST[i+31:i] := SRC2[31:0];
FI;
ELSE
IF SRC1[i+31:i] < SRC2[i+31:i]
THEN DEST[i+31:i] := SRC1[i+31:i];
ELSE DEST[i+31:i] := SRC2[i+31:i];
FI;
FI;
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
VPMINUQ (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
IF (EVEX.b = 1) AND (SRC2 *is memory*)
THEN
IF SRC1[i+63:i] < SRC2[63:0]
THEN DEST[i+63:i] := SRC1[i+63:i];
ELSE DEST[i+63:i] := SRC2[63:0];
FI;
ELSE
IF SRC1[i+63:i] < SRC2[i+63:i]
THEN DEST[i+63:i] := SRC1[i+63:i];
ELSE DEST[i+63:i] := SRC2[i+63:i];
FI;
FI;
ELSE
IF *merging-masking* ; 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 ¶
VPMINUD __m512i _mm512_min_epu32( __m512i a, __m512i b);
VPMINUD __m512i _mm512_mask_min_epu32(__m512i s, __mmask16 k, __m512i a, __m512i b);
VPMINUD __m512i _mm512_maskz_min_epu32( __mmask16 k, __m512i a, __m512i b);
VPMINUQ __m512i _mm512_min_epu64( __m512i a, __m512i b);
VPMINUQ __m512i _mm512_mask_min_epu64(__m512i s, __mmask8 k, __m512i a, __m512i b);
VPMINUQ __m512i _mm512_maskz_min_epu64( __mmask8 k, __m512i a, __m512i b);
VPMINUD __m256i _mm256_mask_min_epu32(__m256i s, __mmask16 k, __m256i a, __m256i b);
VPMINUD __m256i _mm256_maskz_min_epu32( __mmask16 k, __m256i a, __m256i b);
VPMINUQ __m256i _mm256_mask_min_epu64(__m256i s, __mmask8 k, __m256i a, __m256i b);
VPMINUQ __m256i _mm256_maskz_min_epu64( __mmask8 k, __m256i a, __m256i b);
VPMINUD __m128i _mm_mask_min_epu32(__m128i s, __mmask8 k, __m128i a, __m128i b);
VPMINUD __m128i _mm_maskz_min_epu32( __mmask8 k, __m128i a, __m128i b);
VPMINUQ __m128i _mm_mask_min_epu64(__m128i s, __mmask8 k, __m128i a, __m128i b);
VPMINUQ __m128i _mm_maskz_min_epu64( __mmask8 k, __m128i a, __m128i b);
(V)PMINUD __m128i _mm_min_epu32 ( __m128i a, __m128i b);
VPMINUD __m256i _mm256_min_epu32 ( __m256i a, __m256i b);
SIMD Floating-Point Exceptions ¶
None.
Other Exceptions ¶
Non-EVEX-encoded instruction, see Table 2-21, “Type 4 Class Exception Conditions.”
EVEX-encoded instruction, see Table 2-49, “Type E4 Class Exception Conditions.”