image/svg+xmlPACKSSWB/PACKSSDW—Pack with Signed SaturationOpcode/InstructionOp/ En64/32 bit Mode SupportCPUID Feature FlagDescriptionNP 0F 63 /r1PACKSSWB mm1, mm2/m64AV/V MMXConverts 4 packed signed word integers from mm1 and from mm2/m64 into 8 packed signed byte integers in mm1 using signed saturation.66 0F 63 /rPACKSSWB xmm1, xmm2/m128AV/VSSE2Converts 8 packed signed word integers from xmm1 and from xmm2/m128 into 16 packed signed byte integers in xmm1 using signed saturation.NP 0F 6B /r1PACKSSDW mm1, mm2/m64AV/VMMXConverts 2 packed signed doubleword integers from mm1 and from mm2/m64 into 4 packed signed word integers in mm1 using signed saturation.66 0F 6B /rPACKSSDW xmm1, xmm2/m128AV/VSSE2Converts 4 packed signed doubleword integers from xmm1 and from xmm2/m128 into 8 packed signed word integers in xmm1 using signed saturation.VEX.128.66.0F.WIG 63 /rVPACKSSWB xmm1,xmm2, xmm3/m128BV/VAVXConverts 8 packed signed word integers from xmm2 and from xmm3/m128 into 16 packed signed byte integers in xmm1 using signed saturation.VEX.128.66.0F.WIG 6B /rVPACKSSDW xmm1,xmm2, xmm3/m128BV/VAVXConverts 4 packed signed doubleword integers from xmm2 and from xmm3/m128 into 8 packed signed word integers in xmm1 using signed saturation.VEX.256.66.0F.WIG 63 /rVPACKSSWB ymm1, ymm2, ymm3/m256BV/VAVX2Converts 16 packed signed word integers from ymm2 and from ymm3/m256 into 32 packed signed byte integers in ymm1 using signed saturation.VEX.256.66.0F.WIG 6B /rVPACKSSDW ymm1, ymm2, ymm3/m256BV/VAVX2Converts 8 packed signed doubleword integers from ymm2 and from ymm3/m256 into 16 packed signed word integers in ymm1using signed saturation.EVEX.128.66.0F.WIG 63 /rVPACKSSWB xmm1 {k1}{z}, xmm2, xmm3/m128CV/VAVX512VLAVX512BWConverts packed signed word integers from xmm2 and from xmm3/m128 into packed signed byte integers in xmm1 using signed saturation under writemask k1.EVEX.256.66.0F.WIG 63 /rVPACKSSWB ymm1 {k1}{z}, ymm2, ymm3/m256CV/VAVX512VLAVX512BWConverts packed signed word integers from ymm2 and from ymm3/m256 into packed signed byte integers in ymm1 using signed saturation under writemask k1.EVEX.512.66.0F.WIG 63 /rVPACKSSWB zmm1 {k1}{z}, zmm2, zmm3/m512CV/VAVX512BWConverts packed signed word integers from zmm2 and from zmm3/m512 into packed signed byte integers in zmm1 using signed saturation under writemask k1.EVEX.128.66.0F.W0 6B /rVPACKSSDW xmm1 {k1}{z}, xmm2, xmm3/m128/m32bcstDV/VAVX512VLAVX512BWConverts packed signed doubleword integers from xmm2 and from xmm3/m128/m32bcst into packed signed word integers in xmm1 using signed saturation under writemask k1.

image/svg+xmlInstruction Operand EncodingDescriptionConverts packed signed word integers into packed signed byte integers (PACKSSWB) or converts packed signed doubleword integers into packed signed word integers (PACKSSDW), using saturation to handle overflow condi-tions. See Figure4-6 for an example of the packing operation.PACKSSWB converts packed signed word integers in the first and second source operands into packed signed byte integers using signed saturation to handle overflow conditions beyond the range of signed byte integers. If the signed word value is beyond the range of a signed byte value (i.e., greater than 7FH or less than 80H), the satu-rated signed byte integer value of 7FH or 80H, respectively, is stored in the destination. PACKSSDW converts packed signed doubleword integers in the first and second source operands into packed signed word integers using signed saturation to handle overflow conditions beyond 7FFFH and 8000H.EVEX encoded PACKSSWB: The first source operand is a ZMM/YMM/XMM register. The second source operand is a ZMM/YMM/XMM register or a 512/256/128-bit memory location. The destination operand is a ZMM/YMM/XMM register, updated conditional under the writemask k1.EVEX encoded PACKSSDW: 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-bit memory location. The destination operand is a ZMM/YMM/XMM register, updated conditional under the writemask k1.EVEX.256.66.0F.W0 6B /rVPACKSSDW ymm1 {k1}{z}, ymm2, ymm3/m256/m32bcstDV/VAVX512VLAVX512BWConverts packed signed doubleword integers from ymm2 and from ymm3/m256/m32bcst into packed signed word integers in ymm1 using signed saturation under writemask k1.EVEX.512.66.0F.W0 6B /rVPACKSSDW zmm1 {k1}{z}, zmm2, zmm3/m512/m32bcstDV/VAVX512BWConverts packed signed doubleword integers from zmm2 and from zmm3/m512/m32bcst into packed signed word integers in zmm1 using signed saturation under writemask k1.NOTES:1. See note in Section 2.4, “AVX and SSE Instruction Exception Specification” in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 2A and Section 22.25.3, “Exception Conditions of Legacy SIMD Instructions Operating on MMX Registers” in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3A.Op/EnTuple TypeOperand 1Operand 2Operand 3Operand 4ANAModRM:reg (r, w)ModRM:r/m (r)NANABNAModRM:reg (w)VEX.vvvv (r)ModRM:r/m (r)NACFull MemModRM:reg (w)EVEX.vvvv (r)ModRM:r/m (r)NADFullModRM:reg (w)EVEX.vvvv (r)ModRM:r/m (r)NAFigure 4-6. Operation of the PACKSSDW Instruction Using 64-bit OperandsDC64-Bit SRC64-Bit DESTD’C’B’A’64-Bit DESTBA

image/svg+xmlVEX.256 encoded version: The first source operand is a YMM register. The second source operand is a YMM register or a 256-bit memory location. The destination operand is a YMM register. The upper bits (MAXVL-1:256) of the corresponding ZMM register destination are zeroed. VEX.128 encoded version: The first source operand is an XMM register. The second source operand is an XMM register or 128-bit memory location. The destination operand is an XMM register. The upper bits (MAXVL-1:128) of the corresponding ZMM register destination are zeroed.128-bit Legacy SSE version: The first source operand is an XMM register. The second operand can be an XMM register or an 128-bit memory location. The destination is not distinct from the first source XMM register and the upper bits (MAXVL-1:128) of the corresponding ZMM destination register destination are unmodified.OperationPACKSSWB instruction (128-bit Legacy SSE version)DEST[7:0] := SaturateSignedWordToSignedByte (DEST[15:0]);DEST[15:8] := SaturateSignedWordToSignedByte (DEST[31:16]); DEST[23:16] := SaturateSignedWordToSignedByte (DEST[47:32]);DEST[31:24] := SaturateSignedWordToSignedByte (DEST[63:48]);DEST[39:32] := SaturateSignedWordToSignedByte (DEST[79:64]);DEST[47:40] := SaturateSignedWordToSignedByte (DEST[95:80]);DEST[55:48] := SaturateSignedWordToSignedByte (DEST[111:96]);DEST[63:56] := SaturateSignedWordToSignedByte (DEST[127:112]);DEST[71:64] := SaturateSignedWordToSignedByte (SRC[15:0]);DEST[79:72] := SaturateSignedWordToSignedByte (SRC[31:16]);DEST[87:80] := SaturateSignedWordToSignedByte (SRC[47:32]);DEST[95:88] := SaturateSignedWordToSignedByte (SRC[63:48]);DEST[103:96] := SaturateSignedWordToSignedByte (SRC[79:64]);DEST[111:104] := SaturateSignedWordToSignedByte (SRC[95:80]);DEST[119:112] := SaturateSignedWordToSignedByte (SRC[111:96]);DEST[127:120] := SaturateSignedWordToSignedByte (SRC[127:112]);DEST[MAXVL-1:128] (Unmodified)PACKSSDW instruction (128-bit Legacy SSE version)DEST[15:0] := SaturateSignedDwordToSignedWord (DEST[31:0]);DEST[31:16] := SaturateSignedDwordToSignedWord (DEST[63:32]);DEST[47:32] := SaturateSignedDwordToSignedWord (DEST[95:64]);DEST[63:48] := SaturateSignedDwordToSignedWord (DEST[127:96]);DEST[79:64] := SaturateSignedDwordToSignedWord (SRC[31:0]);DEST[95:80] := SaturateSignedDwordToSignedWord (SRC[63:32]);DEST[111:96] := SaturateSignedDwordToSignedWord (SRC[95:64]);DEST[127:112] := SaturateSignedDwordToSignedWord (SRC[127:96]);DEST[MAXVL-1:128] (Unmodified)

image/svg+xmlVPACKSSWB instruction (VEX.128 encoded version)DEST[7:0] := SaturateSignedWordToSignedByte (SRC1[15:0]);DEST[15:8] := SaturateSignedWordToSignedByte (SRC1[31:16]); DEST[23:16] := SaturateSignedWordToSignedByte (SRC1[47:32]);DEST[31:24] := SaturateSignedWordToSignedByte (SRC1[63:48]);DEST[39:32] := SaturateSignedWordToSignedByte (SRC1[79:64]);DEST[47:40] := SaturateSignedWordToSignedByte (SRC1[95:80]);DEST[55:48] := SaturateSignedWordToSignedByte (SRC1[111:96]);DEST[63:56] := SaturateSignedWordToSignedByte (SRC1[127:112]);DEST[71:64] := SaturateSignedWordToSignedByte (SRC2[15:0]);DEST[79:72] := SaturateSignedWordToSignedByte (SRC2[31:16]);DEST[87:80] := SaturateSignedWordToSignedByte (SRC2[47:32]);DEST[95:88] := SaturateSignedWordToSignedByte (SRC2[63:48]);DEST[103:96] := SaturateSignedWordToSignedByte (SRC2[79:64]);DEST[111:104] := SaturateSignedWordToSignedByte (SRC2[95:80]);DEST[119:112] := SaturateSignedWordToSignedByte (SRC2[111:96]);DEST[127:120] := SaturateSignedWordToSignedByte (SRC2[127:112]);DEST[MAXVL-1:128] := 0;VPACKSSDW instruction (VEX.128 encoded version)DEST[15:0] := SaturateSignedDwordToSignedWord (SRC1[31:0]);DEST[31:16] := SaturateSignedDwordToSignedWord (SRC1[63:32]);DEST[47:32] := SaturateSignedDwordToSignedWord (SRC1[95:64]);DEST[63:48] := SaturateSignedDwordToSignedWord (SRC1[127:96]);DEST[79:64] := SaturateSignedDwordToSignedWord (SRC2[31:0]);DEST[95:80] := SaturateSignedDwordToSignedWord (SRC2[63:32]);DEST[111:96] := SaturateSignedDwordToSignedWord (SRC2[95:64]);DEST[127:112] := SaturateSignedDwordToSignedWord (SRC2[127:96]);DEST[MAXVL-1:128] := 0;VPACKSSWB instruction (VEX.256 encoded version)DEST[7:0] := SaturateSignedWordToSignedByte (SRC1[15:0]);DEST[15:8] := SaturateSignedWordToSignedByte (SRC1[31:16]); DEST[23:16] := SaturateSignedWordToSignedByte (SRC1[47:32]);DEST[31:24] := SaturateSignedWordToSignedByte (SRC1[63:48]);DEST[39:32] := SaturateSignedWordToSignedByte (SRC1[79:64]);DEST[47:40] := SaturateSignedWordToSignedByte (SRC1[95:80]);DEST[55:48] := SaturateSignedWordToSignedByte (SRC1[111:96]);DEST[63:56] := SaturateSignedWordToSignedByte (SRC1[127:112]);DEST[71:64] := SaturateSignedWordToSignedByte (SRC2[15:0]);DEST[79:72] := SaturateSignedWordToSignedByte (SRC2[31:16]);DEST[87:80] := SaturateSignedWordToSignedByte (SRC2[47:32]);DEST[95:88] := SaturateSignedWordToSignedByte (SRC2[63:48]);DEST[103:96] := SaturateSignedWordToSignedByte (SRC2[79:64]);DEST[111:104] := SaturateSignedWordToSignedByte (SRC2[95:80]);DEST[119:112] := SaturateSignedWordToSignedByte (SRC2[111:96]);DEST[127:120] := SaturateSignedWordToSignedByte (SRC2[127:112]);DEST[135:128] := SaturateSignedWordToSignedByte (SRC1[143:128]);DEST[143:136] := SaturateSignedWordToSignedByte (SRC1[159:144]); DEST[151:144] := SaturateSignedWordToSignedByte (SRC1[175:160]);DEST[159:152] := SaturateSignedWordToSignedByte (SRC1[191:176]);DEST[167:160] := SaturateSignedWordToSignedByte (SRC1[207:192]);DEST[175:168] := SaturateSignedWordToSignedByte (SRC1[223:208]);DEST[183:176] := SaturateSignedWordToSignedByte (SRC1[239:224]);

image/svg+xmlDEST[191:184] := SaturateSignedWordToSignedByte (SRC1[255:240]);DEST[199:192] := SaturateSignedWordToSignedByte (SRC2[143:128]);DEST[207:200] := SaturateSignedWordToSignedByte (SRC2[159:144]);DEST[215:208] := SaturateSignedWordToSignedByte (SRC2[175:160]);DEST[223:216] := SaturateSignedWordToSignedByte (SRC2[191:176]);DEST[231:224] := SaturateSignedWordToSignedByte (SRC2[207:192]);DEST[239:232] := SaturateSignedWordToSignedByte (SRC2[223:208]);DEST[247:240] := SaturateSignedWordToSignedByte (SRC2[239:224]);DEST[255:248] := SaturateSignedWordToSignedByte (SRC2[255:240]);DEST[MAXVL-1:256] := 0;VPACKSSDW instruction (VEX.256 encoded version)DEST[15:0] := SaturateSignedDwordToSignedWord (SRC1[31:0]);DEST[31:16] := SaturateSignedDwordToSignedWord (SRC1[63:32]);DEST[47:32] := SaturateSignedDwordToSignedWord (SRC1[95:64]);DEST[63:48] := SaturateSignedDwordToSignedWord (SRC1[127:96]);DEST[79:64] := SaturateSignedDwordToSignedWord (SRC2[31:0]);DEST[95:80] := SaturateSignedDwordToSignedWord (SRC2[63:32]);DEST[111:96] := SaturateSignedDwordToSignedWord (SRC2[95:64]);DEST[127:112] := SaturateSignedDwordToSignedWord (SRC2[127:96]);DEST[143:128] := SaturateSignedDwordToSignedWord (SRC1[159:128]);DEST[159:144] := SaturateSignedDwordToSignedWord (SRC1[191:160]);DEST[175:160] := SaturateSignedDwordToSignedWord (SRC1[223:192]);DEST[191:176] := SaturateSignedDwordToSignedWord (SRC1[255:224]);DEST[207:192] := SaturateSignedDwordToSignedWord (SRC2[159:128]);DEST[223:208] := SaturateSignedDwordToSignedWord (SRC2[191:160]);DEST[239:224] := SaturateSignedDwordToSignedWord (SRC2[223:192]);DEST[255:240] := SaturateSignedDwordToSignedWord (SRC2[255:224]);DEST[MAXVL-1:256] := 0;VPACKSSWB (EVEX encoded versions)(KL, VL) = (16, 128), (32, 256), (64, 512)TMP_DEST[7:0] := SaturateSignedWordToSignedByte (SRC1[15:0]);TMP_DEST[15:8] := SaturateSignedWordToSignedByte (SRC1[31:16]); TMP_DEST[23:16] := SaturateSignedWordToSignedByte (SRC1[47:32]);TMP_DEST[31:24] := SaturateSignedWordToSignedByte (SRC1[63:48]);TMP_DEST[39:32] := SaturateSignedWordToSignedByte (SRC1[79:64]);TMP_DEST[47:40] := SaturateSignedWordToSignedByte (SRC1[95:80]);TMP_DEST[55:48] := SaturateSignedWordToSignedByte (SRC1[111:96]);TMP_DEST[63:56] := SaturateSignedWordToSignedByte (SRC1[127:112]);TMP_DEST[71:64] := SaturateSignedWordToSignedByte (SRC2[15:0]);TMP_DEST[79:72] := SaturateSignedWordToSignedByte (SRC2[31:16]);TMP_DEST[87:80] := SaturateSignedWordToSignedByte (SRC2[47:32]);TMP_DEST[95:88] := SaturateSignedWordToSignedByte (SRC2[63:48]);TMP_DEST[103:96] := SaturateSignedWordToSignedByte (SRC2[79:64]);TMP_DEST[111:104] := SaturateSignedWordToSignedByte (SRC2[95:80]);TMP_DEST[119:112] := SaturateSignedWordToSignedByte (SRC2[111:96]);TMP_DEST[127:120] := SaturateSignedWordToSignedByte (SRC2[127:112]);IF VL >= 256TMP_DEST[135:128] := SaturateSignedWordToSignedByte (SRC1[143:128]);TMP_DEST[143:136] := SaturateSignedWordToSignedByte (SRC1[159:144]); TMP_DEST[151:144] := SaturateSignedWordToSignedByte (SRC1[175:160]);TMP_DEST[159:152] := SaturateSignedWordToSignedByte (SRC1[191:176]);TMP_DEST[167:160] := SaturateSignedWordToSignedByte (SRC1[207:192]);

image/svg+xmlTMP_DEST[175:168] := SaturateSignedWordToSignedByte (SRC1[223:208]);TMP_DEST[183:176] := SaturateSignedWordToSignedByte (SRC1[239:224]);TMP_DEST[191:184] := SaturateSignedWordToSignedByte (SRC1[255:240]);TMP_DEST[199:192] := SaturateSignedWordToSignedByte (SRC2[143:128]);TMP_DEST[207:200] := SaturateSignedWordToSignedByte (SRC2[159:144]);TMP_DEST[215:208] := SaturateSignedWordToSignedByte (SRC2[175:160]);TMP_DEST[223:216] := SaturateSignedWordToSignedByte (SRC2[191:176]);TMP_DEST[231:224] := SaturateSignedWordToSignedByte (SRC2[207:192]);TMP_DEST[239:232] := SaturateSignedWordToSignedByte (SRC2[223:208]);TMP_DEST[247:240] := SaturateSignedWordToSignedByte (SRC2[239:224]);TMP_DEST[255:248] := SaturateSignedWordToSignedByte (SRC2[255:240]);FI;IF VL >= 512TMP_DEST[263:256] := SaturateSignedWordToSignedByte (SRC1[271:256]);TMP_DEST[271:264] := SaturateSignedWordToSignedByte (SRC1[287:272]); TMP_DEST[279:272] := SaturateSignedWordToSignedByte (SRC1[303:288]);TMP_DEST[287:280] := SaturateSignedWordToSignedByte (SRC1[319:304]);TMP_DEST[295:288] := SaturateSignedWordToSignedByte (SRC1[335:320]);TMP_DEST[303:296] := SaturateSignedWordToSignedByte (SRC1[351:336]);TMP_DEST[311:304] := SaturateSignedWordToSignedByte (SRC1[367:352]);TMP_DEST[319:312] := SaturateSignedWordToSignedByte (SRC1[383:368]);TMP_DEST[327:320] := SaturateSignedWordToSignedByte (SRC2[271:256]);TMP_DEST[335:328] := SaturateSignedWordToSignedByte (SRC2[287:272]); TMP_DEST[343:336] := SaturateSignedWordToSignedByte (SRC2[303:288]);TMP_DEST[351:344] := SaturateSignedWordToSignedByte (SRC2[319:304]);TMP_DEST[359:352] := SaturateSignedWordToSignedByte (SRC2[335:320]);TMP_DEST[367:360] := SaturateSignedWordToSignedByte (SRC2[351:336]);TMP_DEST[375:368] := SaturateSignedWordToSignedByte (SRC2[367:352]);TMP_DEST[383:376] := SaturateSignedWordToSignedByte (SRC2[383:368]);TMP_DEST[391:384] := SaturateSignedWordToSignedByte (SRC1[399:384]);TMP_DEST[399:392] := SaturateSignedWordToSignedByte (SRC1[415:400]);TMP_DEST[407:400] := SaturateSignedWordToSignedByte (SRC1[431:416]);TMP_DEST[415:408] := SaturateSignedWordToSignedByte (SRC1[447:432]);TMP_DEST[423:416] := SaturateSignedWordToSignedByte (SRC1[463:448]);TMP_DEST[431:424] := SaturateSignedWordToSignedByte (SRC1[479:464]);TMP_DEST[439:432] := SaturateSignedWordToSignedByte (SRC1[495:480]);TMP_DEST[447:440] := SaturateSignedWordToSignedByte (SRC1[511:496]);TMP_DEST[455:448] := SaturateSignedWordToSignedByte (SRC2[399:384]);TMP_DEST[463:456] := SaturateSignedWordToSignedByte (SRC2[415:400]);TMP_DEST[471:464] := SaturateSignedWordToSignedByte (SRC2[431:416]);TMP_DEST[479:472] := SaturateSignedWordToSignedByte (SRC2[447:432]);TMP_DEST[487:480] := SaturateSignedWordToSignedByte (SRC2[463:448]);TMP_DEST[495:488] := SaturateSignedWordToSignedByte (SRC2[479:464]);TMP_DEST[503:496] := SaturateSignedWordToSignedByte (SRC2[495:480]);TMP_DEST[511:504] := SaturateSignedWordToSignedByte (SRC2[511:496]);FI;FOR j := 0 TO KL-1i := j * 8IF k1[j] OR *no writemask*THEN DEST[i+7:i] := TMP_DEST[i+7:i]

image/svg+xmlELSE IF *merging-masking*; merging-maskingTHEN *DEST[i+7:i] remains unchanged*ELSE *zeroing-masking*; zeroing-maskingDEST[i+7:i] := 0FIFI;ENDFOR;DEST[MAXVL-1:VL] := 0VPACKSSDW (EVEX encoded versions)(KL, VL) = (8, 128), (16, 256), (32, 512)FOR j := 0 TO ((KL/2) - 1)i := j * 32IF (EVEX.b == 1) AND (SRC2 *is memory*)THENTMP_SRC2[i+31:i] := SRC2[31:0]ELSE TMP_SRC2[i+31:i] := SRC2[i+31:i]FI;ENDFOR;TMP_DEST[15:0] := SaturateSignedDwordToSignedWord (SRC1[31:0]);TMP_DEST[31:16] := SaturateSignedDwordToSignedWord (SRC1[63:32]);TMP_DEST[47:32] := SaturateSignedDwordToSignedWord (SRC1[95:64]);TMP_DEST[63:48] := SaturateSignedDwordToSignedWord (SRC1[127:96]);TMP_DEST[79:64] := SaturateSignedDwordToSignedWord (TMP_SRC2[31:0]);TMP_DEST[95:80] := SaturateSignedDwordToSignedWord (TMP_SRC2[63:32]);TMP_DEST[111:96] := SaturateSignedDwordToSignedWord (TMP_SRC2[95:64]);TMP_DEST[127:112] := SaturateSignedDwordToSignedWord (TMP_SRC2[127:96]);IF VL >= 256TMP_DEST[143:128] := SaturateSignedDwordToSignedWord (SRC1[159:128]);TMP_DEST[159:144] := SaturateSignedDwordToSignedWord (SRC1[191:160]);TMP_DEST[175:160] := SaturateSignedDwordToSignedWord (SRC1[223:192]);TMP_DEST[191:176] := SaturateSignedDwordToSignedWord (SRC1[255:224]);TMP_DEST[207:192] := SaturateSignedDwordToSignedWord (TMP_SRC2[159:128]);TMP_DEST[223:208] := SaturateSignedDwordToSignedWord (TMP_SRC2[191:160]);TMP_DEST[239:224] := SaturateSignedDwordToSignedWord (TMP_SRC2[223:192]);TMP_DEST[255:240] := SaturateSignedDwordToSignedWord (TMP_SRC2[255:224]);FI;IF VL >= 512TMP_DEST[271:256] := SaturateSignedDwordToSignedWord (SRC1[287:256]);TMP_DEST[287:272] := SaturateSignedDwordToSignedWord (SRC1[319:288]);TMP_DEST[303:288] := SaturateSignedDwordToSignedWord (SRC1[351:320]);TMP_DEST[319:304] := SaturateSignedDwordToSignedWord (SRC1[383:352]);TMP_DEST[335:320] := SaturateSignedDwordToSignedWord (TMP_SRC2[287:256]);TMP_DEST[351:336] := SaturateSignedDwordToSignedWord (TMP_SRC2[319:288]);TMP_DEST[367:352] := SaturateSignedDwordToSignedWord (TMP_SRC2[351:320]);TMP_DEST[383:368] := SaturateSignedDwordToSignedWord (TMP_SRC2[383:352]);TMP_DEST[399:384] := SaturateSignedDwordToSignedWord (SRC1[415:384]);TMP_DEST[415:400] := SaturateSignedDwordToSignedWord (SRC1[447:416]);TMP_DEST[431:416] := SaturateSignedDwordToSignedWord (SRC1[479:448]);

image/svg+xmlTMP_DEST[447:432] := SaturateSignedDwordToSignedWord (SRC1[511:480]);TMP_DEST[463:448] := SaturateSignedDwordToSignedWord (TMP_SRC2[415:384]);TMP_DEST[479:464] := SaturateSignedDwordToSignedWord (TMP_SRC2[447:416]);TMP_DEST[495:480] := SaturateSignedDwordToSignedWord (TMP_SRC2[479:448]);TMP_DEST[511:496] := SaturateSignedDwordToSignedWord (TMP_SRC2[511:480]);FI;FOR j := 0 TO KL-1i := j * 16IF k1[j] OR *no writemask*THEN DEST[i+15:i] := TMP_DEST[i+15:i]ELSE IF *merging-masking*; merging-maskingTHEN *DEST[i+15:i] remains unchanged*ELSE *zeroing-masking*; zeroing-maskingDEST[i+15:i] := 0FIFI;ENDFOR;DEST[MAXVL-1:VL] := 0Intel C/C++ Compiler Intrinsic EquivalentsVPACKSSDW__m512i _mm512_packs_epi32(__m512i m1, __m512i m2);VPACKSSDW__m512i _mm512_mask_packs_epi32(__m512i s, __mmask32 k, __m512i m1, __m512i m2);VPACKSSDW__m512i _mm512_maskz_packs_epi32( __mmask32 k, __m512i m1, __m512i m2);VPACKSSDW__m256i _mm256_mask_packs_epi32( __m256i s, __mmask16 k, __m256i m1, __m256i m2);VPACKSSDW__m256i _mm256_maskz_packs_epi32( __mmask16 k, __m256i m1, __m256i m2);VPACKSSDW__m128i _mm_mask_packs_epi32( __m128i s, __mmask8 k, __m128i m1, __m128i m2);VPACKSSDW__m128i _mm_maskz_packs_epi32( __mmask8 k, __m128i m1, __m128i m2);VPACKSSWB__m512i _mm512_packs_epi16(__m512i m1, __m512i m2);VPACKSSWB__m512i _mm512_mask_packs_epi16(__m512i s, __mmask32 k, __m512i m1, __m512i m2);VPACKSSWB__m512i _mm512_maskz_packs_epi16( __mmask32 k, __m512i m1, __m512i m2);VPACKSSWB__m256i _mm256_mask_packs_epi16( __m256i s, __mmask16 k, __m256i m1, __m256i m2);VPACKSSWB__m256i _mm256_maskz_packs_epi16( __mmask16 k, __m256i m1, __m256i m2);VPACKSSWB__m128i _mm_mask_packs_epi16( __m128i s, __mmask8 k, __m128i m1, __m128i m2);VPACKSSWB__m128i _mm_maskz_packs_epi16( __mmask8 k, __m128i m1, __m128i m2);PACKSSWB __m128i _mm_packs_epi16(__m128i m1, __m128i m2)PACKSSDW __m128i _mm_packs_epi32(__m128i m1, __m128i m2)VPACKSSWB __m256i _mm256_packs_epi16(__m256i m1, __m256i m2)VPACKSSDW __m256i _mm256_packs_epi32(__m256i m1, __m256i m2)SIMD Floating-Point ExceptionsNoneOther ExceptionsNon-EVEX-encoded instruction, see Table2-21, “Type 4 Class Exception Conditions”.EVEX-encoded VPACKSSDW, see Table2-50, “Type E4NF Class Exception Conditions”.EVEX-encoded VPACKSSWB, see Exceptions Type E4NF.nb in Table2-50, “Type E4NF Class Exception Conditions”.

This UNOFFICIAL reference was generated from the official Intel® 64 and IA-32 Architectures Software Developer’s Manual by a dumb script. There is no guarantee that some parts aren't mangled or broken and is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.