Intel® Architecture Instruction Set Extensions Programming Reference

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$Intel® Math Kernel Library (Intel® MKL) 11.0 Release Notes$

$Intel® Math Kernel Library 11.0 Support for Intel® Xeon Phi ...$

PREFETCHW—Prefetch Data into Caches in Anticipation of a Write Opcode/ <strong>Instruction</strong> 0F 0D /1 PREFETCHW m8 Description <strong>Instruction</strong> Operand Encoding ADDITIONAL NEW INSTRUCTIONS Fetches the cache line of data from memory that contains the byte specified with the source operand to a location in the 1st or 2nd level cache and invalidates all other cached instances of the line. The source operand is a byte memory location. (Use of any ModR/M value other than a memory operand will lead to unpredictable behavior.) If the line selected is already present in the lowest level cache and is already in an exclusively owned state, no data movement occurs. Prefetches from non-writeback memory are ignored. The PREFETCHW instruction is merely a hint and does not affect program behavior. If executed, this instruction moves data closer to the processor and invalidates any other cached copy in anticipation of the line being written to in the future. The characteristic of prefetch locality hints is implementation-dependent, and can be overloaded or ignored by a processor implementation. The amount of data prefetched is also processor implementation-dependent. It will, however, be a minimum of 32 bytes. It should be noted that processors are free to speculatively fetch and cache data with exclusive ownership from system memory regions that permit such accesses (that is, the WB memory type). A PREFETCHW instruction is considered a hint to this speculative behavior. Because this speculative fetching can occur at any time and is not tied to instruction execution, a PREFETCHW instruction is not ordered with respect to the fence instructions (MFENCE, SFENCE, and LFENCE) or locked memory references. A PREFETCHW instruction is also unordered with respect to CLFLUSH instructions, other PREFETCHW instructions, or any other general instruction It is ordered with respect to serializing instructions such as CPUID, WRMSR, OUT, and MOV CR. This instruction's operation is the same in non-64-bit modes and 64-bit mode. Operation FETCH_WITH_EXCLUSIVE_OWNERSHIP (m8); Flags Affected All flags are affected C/C++ Compiler Intrinsic Equivalent void _m_prefetchw( void * ); Protected Mode Exceptions Op/ En #UD If the LOCK prefix is used. Real-Address Mode Exceptions #UD If the LOCK prefix is used. Virtual-8086 Mode Exceptions 64/32 bit Mode Support #UD If the LOCK prefix is used. CPUID Feature Flag Description A V/V PRFCHW Move data from m8 closer to the processor in anticipation of a write. Op/En Operand 1 Operand 2 Operand 3 Operand 4 A ModRM:r/m (r) NA NA NA Ref. # 319433-014 9-9
ADDITIONAL NEW INSTRUCTIONS Compatibility Mode Exceptions #UD If the LOCK prefix is used. 64-Bit Mode Exceptions #UD If the LOCK prefix is used. 9-10 Ref. # 319433-014
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Intel® Architecture Instruction Se
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CONTENTS CHAPTER 1 INTEL® ADVANCED
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PANDN — Logical AND NOT . . . . .
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BZHI — Zero High Bits Starting wi
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TABLES 2-1 Rounding behavior of Zer
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FIGURES Figure 2-1. General Procedu
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INTEL® ADVANCED VECTOR EXTENSIONS
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APPLICATION PROGRAMMING MODEL Prior
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APPLICATION PROGRAMMING MODEL } and
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APPLICATION PROGRAMMING MODEL Scala
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APPLICATION PROGRAMMING MODEL x (mu
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APPLICATION PROGRAMMING MODEL Instr
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APPLICATION PROGRAMMING MODEL Table
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APPLICATION PROGRAMMING MODEL Excep
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APPLICATION PROGRAMMING MODEL 2.7.2
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APPLICATION PROGRAMMING MODEL EAX 3
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APPLICATION PROGRAMMING MODEL • T
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APPLICATION PROGRAMMING MODEL How B
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APPLICATION PROGRAMMING MODEL
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APPLICATION PROGRAMMING MODEL EAX[1
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APPLICATION PROGRAMMING MODEL EBX
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SYSTEM PROGRAMMING MODEL • Verify
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SYSTEM PROGRAMMING MODEL The proces
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SYSTEM PROGRAMMING MODEL 3.3 RESET
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INSTRUCTION FORMAT 4.1.1 VEX and th
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INSTRUCTION FORMAT (Bit Position) 7
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INSTRUCTION FORMAT The VEX.vvvv fie
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INSTRUCTION FORMAT 4.1.8 The Third
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INSTRUCTION FORMAT NOTES: 1. If Mod
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INSTRUCTION SET REFERENCE (V)ADDSD
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INSTRUCTION SET REFERENCE register
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INSTRUCTION SET REFERENCE MPSADBW
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INSTRUCTION SET REFERENCE SRC2_BYTE
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INSTRUCTION SET REFERENCE VMPSADBW
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INSTRUCTION SET REFERENCE DEST[79:6
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INSTRUCTION SET REFERENCE Operation
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INSTRUCTION SET REFERENCE PACKSSWB/
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INSTRUCTION SET REFERENCE PACKUSDW
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INSTRUCTION SET REFERENCE TMP[239:2
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INSTRUCTION SET REFERENCE DEST[119:
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INSTRUCTION SET REFERENCE PADDB/PAD
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INSTRUCTION SET REFERENCE PADDQ (Le
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INSTRUCTION SET REFERENCE PADDSB/PA
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INSTRUCTION SET REFERENCE PADDUSB/P
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INSTRUCTION SET REFERENCE PALIGNR
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INSTRUCTION SET REFERENCE PAND —
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INSTRUCTION SET REFERENCE PANDN —
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INSTRUCTION SET REFERENCE PAVGB/PAV
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INSTRUCTION SET REFERENCE PBLENDVB
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INSTRUCTION SET REFERENCE IF (MASK[
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INSTRUCTION SET REFERENCE PBLENDW
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INSTRUCTION SET REFERENCE ELSE DEST
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INSTRUCTION SET REFERENCE Descripti
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INSTRUCTION SET REFERENCE PCMPEQQ (
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INSTRUCTION SET REFERENCE Intel C/C
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INSTRUCTION SET REFERENCE PHADDSW
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INSTRUCTION SET REFERENCE PHSUBW/PH
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INSTRUCTION SET REFERENCE PMADDUBSW
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INSTRUCTION SET REFERENCE VPMADDWD
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INSTRUCTION SET REFERENCE VEX.128 e
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INSTRUCTION SET REFERENCE VPMINUD (
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INSTRUCTION SET REFERENCE PMOVMSKB
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INSTRUCTION SET REFERENCE Opcode/ I
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INSTRUCTION SET REFERENCE VPMOVSXWQ
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INSTRUCTION SET REFERENCE PMOVZX
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INSTRUCTION SET REFERENCE Packed_Ze
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INSTRUCTION SET REFERENCE Other Exc
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INSTRUCTION SET REFERENCE temp13[31
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INSTRUCTION SET REFERENCE PMULHUW
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INSTRUCTION SET REFERENCE PMULLW/PM
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INSTRUCTION SET REFERENCE Temp10[31
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INSTRUCTION SET REFERENCE PMULUDQ
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INSTRUCTION SET REFERENCE POR — B
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INSTRUCTION SET REFERENCE PSADBW
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INSTRUCTION SET REFERENCE PSHUFB
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INSTRUCTION SET REFERENCE PSHUFD
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INSTRUCTION SET REFERENCE PSHUFHW
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INSTRUCTION SET REFERENCE PSHUFLW
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INSTRUCTION SET REFERENCE PSIGNB/PS
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INSTRUCTION SET REFERENCE DEST[255.
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INSTRUCTION SET REFERENCE PSLLDQ
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INSTRUCTION SET REFERENCE PSLLW/PSL
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INSTRUCTION SET REFERENCE PSLLD (xm
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INSTRUCTION SET REFERENCE PSRAW/PSR
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INSTRUCTION SET REFERENCE COUNT 31
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INSTRUCTION SET REFERENCE PSRLDQ
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INSTRUCTION SET REFERENCE PSRLW/PSR
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INSTRUCTION SET REFERENCE FI; DEST[
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INSTRUCTION SET REFERENCE VPSRLQ (x
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INSTRUCTION SET REFERENCE PSUBSB/PS
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INSTRUCTION SET REFERENCE PSUBUSB/P
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INSTRUCTION SET REFERENCE PUNPCKHBW
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INSTRUCTION SET REFERENCE VPUNPCKHW
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INSTRUCTION SET REFERENCE Instructi
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INSTRUCTION SET REFERENCE INTERLEAV
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INSTRUCTION SET REFERENCE VPUNPCKLD
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INSTRUCTION SET REFERENCE SIMD Floa
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INSTRUCTION SET REFERENCE VBROADCAS
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INSTRUCTION SET REFERENCE VPBLENDD
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INSTRUCTION SET REFERENCE VPBROADCA
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INSTRUCTION SET REFERENCE VPERMPD
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INSTRUCTION SET REFERENCE VPERMQ
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INSTRUCTION SET REFERENCE VINSERTI1
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INSTRUCTION SET REFERENCE The secon
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INSTRUCTION SET REFERENCE VPSLLVD/V
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INSTRUCTION SET REFERENCE Other Exc
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INSTRUCTION SET REFERENCE VPSRAVD (
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INSTRUCTION SET REFERENCE VPSRLVD (
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INSTRUCTION SET REFERENCE VGATHERDP
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INSTRUCTION SET REFERENCE VGATHERQP
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INSTRUCTION SET REFERENCE VGATHERDP
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INSTRUCTION SET REFERENCE VGATHERQP
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INSTRUCTION SET REFERENCE VPGATHERD
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INSTRUCTION SET REFERENCE VPGATHERQ
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INSTRUCTION SET REFERENCE VPGATHERD
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INSTRUCTION SET REFERENCE VPGATHERQ
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INSTRUCTION SET REFERENCE This page
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INSTRUCTION SET REFERENCE - FMA VFM
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INSTRUCTION SET REFERENCE - FMA For
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INSTRUCTION SET REFERENCE - FMA sou
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INSTRUCTION SET REFERENCE - FMA Int
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INSTRUCTION SET REFERENCE - FMA the
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INSTRUCTION SET REFERENCE - FMA the
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INSTRUCTION SET REFERENCE - FMA } I
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INSTRUCTION SET REFERENCE - FMA ope
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INSTRUCTION SET REFERENCE - FMA VFN
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INSTRUCTION SET REFERENCE - FMA VEX
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INSTRUCTION SET REFERENCE - FMA VEX
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INSTRUCTION SET REFERENCE - FMA Thi
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INSTRUCTION SET REFERENCE - VEX-ENC
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Page 387 and 388: INTEL® TRANSACTIONAL SYNCHRONIZATI
Page 407 and 408: ADDITIONAL NEW INSTRUCTIONS -------
Page 409 and 410: ADDITIONAL NEW INSTRUCTIONS • If
Page 411 and 412: ADDITIONAL NEW INSTRUCTIONS ADCX
Page 413: ADDITIONAL NEW INSTRUCTIONS ADOX
Page 417 and 418: ADDITIONAL NEW INSTRUCTIONS Flags A
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Page 421 and 422: OPCODE MAP D The reg field of the M
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Page 429 and 430: OPCODE MAP 0 1 2 3 4 5 6 7 Table A-
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Page 433 and 434: OPCODE MAP 0 Table A-4. Three-byte
Page 435 and 436: OPCODE MAP 0 66 1 66 2 66 3 4 66 5
Page 437 and 438: OPCODE MAP A.4 OPCODE EXTENSIONS FO
Page 439 and 440: OPCODE MAP Opcode Group Mod 7,6 pfx
Page 441 and 442: OPCODE MAP Table A-8 shows the map
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Page 451 and 452: INSTRUCTION SUMMARY VEX.256 Encodin
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INSTRUCTION SUMMARY Opcode Instruct
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SSE extensions flag . . . . . . . .
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SSE extensions CPUID flag . . . . .
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I-6 Ref. # 319433-014
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Intel® Architecture Instruction Set Extensions Programming Reference

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