Difference between revisions of "Instruction Set/load"

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Line 1:Line 1:
 
{{DISPLAYTITLE:load}}
 
{{DISPLAYTITLE:load}}
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|speculable]]&nbsp;&nbsp;[[Encoding|flow stream]]&nbsp;&nbsp;[[Decode|flow block]]&nbsp;&nbsp;[[Phasing|compute phase]]&nbsp;&nbsp; operation&nbsp;&nbsp; [[Domains|in the logical value domain]]&nbsp;&nbsp;<br />
+
<div style="font-size:80%;line-height:90%;margin-bottom:2em">[[Speculation|speculable]]&nbsp;&nbsp;[[Encoding|flow stream]]&nbsp;&nbsp;[[Decode|flow block]]&nbsp;&nbsp;[[Phasing|writer phase]]&nbsp;&nbsp; operation&nbsp;&nbsp; [[Domains|in the logical value domain]]&nbsp;&nbsp;<br />
 
'''native on:''' [[Cores|all]]<br />
 
'''native on:''' [[Cores|all]]<br />
 
</div>
 
</div>
Line 26:Line 26:
  
 
----
 
----
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <span style="color:#009">[[Domains#s|s]]</span> <span title="belt operand from opsWindow">i</span>, <i><span style="color:#009">[[Immediates#scale|scale]]</span> <span title="scale factor
+
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">base0</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">off0</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and vector length (flow)">width0</span></i>, )</code>
−
            for indexes in load/store/lea">s</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeStore|like Store px:]]
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
 
</div>
 
</div>
 
<br />
 
<br />
Line 37:Line 36:
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
| [[Cores/Copper/Encoding#load|Copper]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 || 3
 
|-
 
|-
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
| [[Cores/Gold/Encoding#load|Gold]] || F0 || 3
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
 
|}
 
|}
  
 
----
 
----
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <span style="color:#009">[[Domains#s|s]]</span> <span title="belt operand from opsWindow">i</span>, <i><span style="color:#009">[[Immediates#scale|scale]]</span> <span title="scale factor
+
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and vector length (flow)">w</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name
−
            for indexes in load/store/lea">s</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#lit|lit]]</span> <span title="morsel-sized manifest
+
             for a speculative load (in load)">tag</span>)</code>
−
             constant">delay</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeStore|like Store px:]]
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
 
</div>
 
</div>
 
<br />
 
<br />
Line 61:Line 55:
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
| [[Cores/Copper/Encoding#load|Copper]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 || 3
 
|-
 
|-
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
| [[Cores/Gold/Encoding#load|Gold]] || F0 || 3
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
 
|}
 
|}
  
 
----
 
----
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <span style="color:#009">[[Domains#s|s]]</span> <span title="belt operand from opsWindow">i</span>, <i><span style="color:#009">[[Immediates#scale|scale]]</span> <span title="scale factor
+
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#op|op]]</span> <span title="belt operand from opsWindow">op0</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">off0</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and vector length (flow)">width0</span></i>, )</code>
−
            for indexes in load/store/lea">s</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name for a speculative
+
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeStore|like Store px:]]
−
            load (in load)">tag</span>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
 
</div>
 
</div>
 
<br />
 
<br />
Line 85:Line 73:
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
| [[Cores/Copper/Encoding#load|Copper]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 || 3
 
|-
 
|-
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
| [[Cores/Gold/Encoding#load|Gold]] || F0 || 3
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
 
|}
 
|}
  
 
----
 
----
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and vector length (flow)">w</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name for a speculative load (in load)">tag</span>)</code>
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeStore|like Store px:]]
 
</div>
 
</div>
 
<br />
 
<br />
Line 107:Line 91:
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
| [[Cores/Copper/Encoding#load|Copper]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 || 3
 
|-
 
|-
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
| [[Cores/Gold/Encoding#load|Gold]] || F0 || 3
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
 
|}
 
|}
  
 
----
 
----
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#lit|lit]]</span> <span title="morsel-sized manifest constant">delay</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#op|op]]</span> <span title="belt operand from opsWindow">op0</span>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and vector length (flow)">memAttr0</span></i>, <i><span style="color:#009">[[Immediates#memAttr|memAttr]]</span> <span title="special load/store
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
            behaviors">off0</span></i>, )</code>
 +
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeStore|like Store px:]]
 
</div>
 
</div>
 
<br />
 
<br />
Line 129:Line 110:
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
| [[Cores/Copper/Encoding#load|Copper]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 || 3
 
|-
 
|-
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
| [[Cores/Gold/Encoding#load|Gold]] || F0 || 3
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
 
|}
 
|}
  
 
----
 
----
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Sources#base|base]]</span> <span title="base special register">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name for a  
+
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and vector length (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#memAttr|memAttr]]</span> <span title="special load/store
−
            speculative load (in load)">tag</span>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
            behaviors">m</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name for a speculative load (in load)">tag</span>)</code>
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeStore|like Store px:]]
 
</div>
 
</div>
 
<br />
 
<br />
Line 152:Line 129:
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
 
|-
 
|-
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
| [[Cores/Copper/Encoding#load|Copper]] || F0 || 3
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <span style="color:#009">[[Domains#s|s]]</span> <span title="belt operand from opsWindow">i</span>, <i><span style="color:#009">[[Immediates#scale|scale]]</span> <span title="scale
+
−
            factor for indexes in load/store/lea">s</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <span style="color:#009">[[Domains#s|s]]</span> <span title="belt operand from opsWindow">i</span>, <i><span style="color:#009">[[Immediates#scale|scale]]</span> <span title="scale
+
−
            factor for indexes in load/store/lea">s</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#lit|lit]]</span> <span title="morsel-sized
+
−
            manifest constant">delay</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <span style="color:#009">[[Domains#s|s]]</span> <span title="belt operand from opsWindow">i</span>, <i><span style="color:#009">[[Immediates#scale|scale]]</span> <span title="scale
+
−
            factor for indexes in load/store/lea">s</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name for a
+
−
            speculative load (in load)">tag</span>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#lit|lit]]</span> <span title="morsel-sized manifest constant">delay</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#off|off]]</span> <span title="manifest constant">o</span></i>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name
+
−
            for a speculative load (in load)">tag</span>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#memAttr|memAttr]]</span> <span title="special load/store
+
−
            behaviors">m</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#memAttr|memAttr]]</span> <span title="special load/store
+
−
            behaviors">m</span></i>, <i><span style="color:#009">[[Immediates#lit|lit]]</span> <span title="morsel-sized manifest constant">delay</span></i>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
−
|-
+
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
−
|}
+
−
 
+
−
----
+
−
<code style="font-size:130%"><b style="color:#050">load</b>(<span style="color:#009">[[Domains#p|p]]</span> <span title="belt operand from opsWindow">b</span>, <i><span style="color:#009">[[Immediates#width|width]]</span> <span title="data width and scalarity (flow)">w</span></i>, <i><span style="color:#009">[[Immediates#memAttr|memAttr]]</span> <span title="special load/store
+
−
            behaviors">m</span></i>, <span style="color:#009">[[Sources#tag|tag]]</span> <span title="name for a speculative load (in load)">tag</span>) &#8594; [[Domains#op|op]] r<sub>0</sub></code>
+
−
<div style="font-size:80%;line-height:90%;margin-bottom:2em">'''operands:''' [[Operands#likeIdentityNoSIMD|like IdentityNoSIMD xx:x]]
+
−
</div>
+
−
<br />
+
−
 
+
−
{| class="mw-collapsible mw-collapsed wikitable" data-expandtext="&#9656;" data-collapsetext="&#9662;"
+
−
! [[Cores|Core]] || [[Slot|In Slots]]|| [[Latency|Latencies]]
+
−
|-
+
−
| [[Cores/Tin/Encoding#load|Tin]] || F0 || 3
+
−
|-
+
−
| [[Cores/Copper/Encoding#load|Copper]] || F0 F1 || 3
+
−
|-
+
−
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 F3 || 3
+
−
|-
+
−
| [[Cores/Gold/Encoding#load|Gold]] || F0 F1 F2 F3 F4 F5 F6 F7 || 3
+
 
|-
 
|-
−
| [[Cores/Decimal8/Encoding#load|Decimal8]] || F0 F1 F2 F3 || 3
+
| [[Cores/Silver/Encoding#load|Silver]] || F0 F1 F2 || 3
 
|-
 
|-
−
| [[Cores/Decimal16/Encoding#load|Decimal16]] || F0 F1 F2 F3 || 3
+
| [[Cores/Gold/Encoding#load|Gold]] || F0 || 3
 
|}
 
|}
  
  
 
[[Instruction_Set|Instruction Set, alphabetical]], [[Instruction Set by Category]], [http://millcomputing.com/instructions.html?collapse=7#ops Instruction Set, sortable, filterable]
 
[[Instruction_Set|Instruction Set, alphabetical]], [[Instruction Set by Category]], [http://millcomputing.com/instructions.html?collapse=7#ops Instruction Set, sortable, filterable]

Latest revision as of 14:00, 23 February 2021

speculable  flow stream  flow block  writer phase   operation   in the logical value domain  

native on: all

Schedule data load from memory address into belt.

The load operation is a central piece of the Mill architecture. Due to being a statically scheduled instruction set, all operations have a known constant latency to do the scheduling with. This approach is not possible for loads, since loads, by their very nature, depend on the memory hierarchy, and take different times depending on from where in the cache hierarchy the value had to be pulled.
When a value is pulled all the way from memory scheduling doesn't matter, since the machine stalls anyway, but being able to make the cache delays predictable, would remove the last obstacle to make all operations statically schedulable.

This is achieved by adding an additional parameter to all load operations: the delay that specifies the latency and defines when the load is retiring and dropping the acquired value on the belt. This way loads may have no constant, but still a known defined latency for each invocation.

A second option for scheduling loads is using tags. This is useful when you might wanna use the same loaded value in two different branches, but you need it in two different cycles in the two branches, or you may not need it at all in one branch. Instead of just dropping the value on the belt after the delay you have to explicitly retrieve or refuse the value from the Retire Station with the pickup or refuse operation.
This enables speculative loads.

Loads are aliasing-safe. This means the value load returns is the value that is at the address at the time load retires, not at the time load is issues. Any stores to the address of an in flight load are tracked and reflected in the result.

There are several different addressing modes for loads. The general formula for computing addresses is base+offset+(scale*index).
Base can come from a number of special Registers or the belt. Offset is always an inline constant. Those two are always present, although a zero offset doesn't take any space at all.
Scale and index are optional and alway appear together. The scale is a compile time constant, the index is always from the belt.

Another compile time parameter is the width and scalarity of the loaded value. The minimum is one byte, but if the Core allows it, it is very possible to directly load a vector of eight 32bit elements.

related operations: store, pickup, refuse, loadf, loadd

load(base base0, off off0, width width0, )

operands: like Store px:


Core In Slots Latencies
Tin F0 3
Copper F0 3
Silver F0 F1 F2 3
Gold F0 3

load(base b, off o, width w, tag tag)

operands: like Store px:


Core In Slots Latencies
Tin F0 3
Copper F0 3
Silver F0 F1 F2 3
Gold F0 3

load(op op0, off off0, width width0, )

operands: like Store px:


Core In Slots Latencies
Tin F0 3
Copper F0 3
Silver F0 F1 F2 3
Gold F0 3

load(p b, off o, width w, tag tag)

operands: like Store px:


Core In Slots Latencies
Tin F0 3
Copper F0 3
Silver F0 F1 F2 3
Gold F0 3

load(op op0, width memAttr0, memAttr off0, )

operands: like Store px:


Core In Slots Latencies
Tin F0 3
Copper F0 3
Silver F0 F1 F2 3
Gold F0 3

load(p b, width w, memAttr m, tag tag)

operands: like Store px:


Core In Slots Latencies
Tin F0 3
Copper F0 3
Silver F0 F1 F2 3
Gold F0 3


Instruction Set, alphabetical, Instruction Set by Category, Instruction Set, sortable, filterable

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