...ing]] technology, a number of modifications had to be done. The [[prefetch buffer]] and the [[instruction queue]] have been duplicated for each thread. ...s 4096 entries and is [[competitively shared]] between threads. The branch buffer target has 128 entries (4-way by 32 sets). While [[unconditional jumps]] ar

* {{x86|PREFETCHW|<code>PREFETCHW</code>}} - Prefetch data into caches, hinting a write is expected in the future ...etermine the next fetch address which also includes a 4-entry Return Stack Buffer for calls and returns handling.

[[File:broadwell buffer window.png|right|350px]] * {{x86|PREFETCHW|<code>PREFETCHW</code>}} - Prefetch data into caches, hinting a write is expected in the future

** Larger Line Fill Buffer? **** 2.28x larger buffer (64/thread, up from 56)

...lier stage. The BP is capable of storing 2 branches per BTB (Branch Target Buffer) entry, reducing the number of BTB reads necessary. ITLB is composed of: ...ylake}} which has a 16-byte fetch window. The size of the instruction byte buffer is of 20 entries (10 entries per thread in SMT).

*** 256-entry ReOrder Buffer *** Hardware prefetch on L1 misses

...TB. Up to four instructions can be fetches each cycle into the instruction buffer which is 32 entries in size. ...ing the cache so they can be sent directly to decode. From the instruction buffer, up to four instructions can be decoded each cycle, up to four instructions

** ROT: Instruction rotation, decoupling buffer ...f there's an instruction cache miss. If the backend stalls, the decoupling buffer can allow fetch to keep running ahead.

* Write Buffer ...tore up to eight words and up to two addresses. As with the IDC, the write buffer may be enabled or disabled and is controlled via a <code>Bufferable</code>

* Improved cache load, write and prefetch from/to register (less latency) ...om 192 to 224), floating-point register file (from 160 to 192) and reorder buffer (from 256 to 320 entries)

...2-byte instruction windows, twice the fetch size. The main [[branch target buffer]] on the A76 is 6K-entries deep. The BPU comprises three stages in order to ...ng non-prefetch misses. The load buffer is 68 entries deep while the store buffer is 72-entry deep. In total, the A76 can have 140 simultaneous memory operat

** 1.25x larger [[reorder buffer|ROB]] (160-entry, up from 128) ** 1.25 larger load buffer (85-entry, up from 68)

*** Buffer size shrunk ...y in this core. The branch predictor has a 8K-entries deep [[branch target buffer]] and the instruction window size on Hercules remains at 64 bytes/cycle, al

...on|activation hardware]], the pooling hardware, and finally into the write buffer which aggregates the results. The FSD supports a number of activation funct ...l padding designed to reduce bank conflicts, and inserts DMA operations to prefetch data prior to use. During [[code generation]], weight data is generated, co

...udes an instruction cache, write-back data cache, register file, and write buffer. A branch prediction unit is not present or needed. All pipeline stages com ...tes the data into the cache, otherwise the store is forwarded to the Write Buffer. If any exceptions are posted, an exception is signaled and the Au1 core is