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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97170 91177308-0d34-0410-b5e6-96231b3b80d8
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Bill Wendling 2010-02-25 21:23:24 +00:00
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@ -4077,9 +4077,9 @@ Instruction</a> </div>
<h5>Syntax:</h5>
<pre>
&lt;result&gt; = load &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;][, !nontemporal !<index>]
&lt;result&gt; = volatile load &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;][, !nontemporal !<index>]
!<index> = !{ i32 1 }
&lt;result&gt; = load &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;][, !nontemporal !&lt;index&gt;]
&lt;result&gt; = volatile load &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;][, !nontemporal !&lt;index&gt;]
!&lt;index&gt; = !{ i32 1 }
</pre>
<h5>Overview:</h5>
@ -4094,21 +4094,21 @@ Instruction</a> </div>
volatile <tt>load</tt> and <tt><a href="#i_store">store</a></tt>
instructions.</p>
<p>The optional constant "align" argument specifies the alignment of the
<p>The optional constant <tt>align</tt> argument specifies the alignment of the
operation (that is, the alignment of the memory address). A value of 0 or an
omitted "align" argument means that the operation has the preferential
omitted <tt>align</tt> argument means that the operation has the preferential
alignment for the target. It is the responsibility of the code emitter to
ensure that the alignment information is correct. Overestimating the
alignment results in an undefined behavior. Underestimating the alignment may
alignment results in undefined behavior. Underestimating the alignment may
produce less efficient code. An alignment of 1 is always safe.</p>
<p>The optional !nontemporal metadata must reference a single metatadata
name <index> corresponding to a metadata node with one i32 entry of
value 1. The existance of the !nontemporal metatadata on the
instruction tells the optimizer and code generator that this load is
not expected to be reused in the cache. The code generator may
select special instructions to save cache bandwidth, such as the
MOVNT intruction on x86.</p>
<p>The optional <tt>!nontemporal</tt> metadata must reference a single
metatadata name &lt;index&gt; corresponding to a metadata node with
one <tt>i32</tt> entry of value 1. The existance of
the <tt>!nontemporal</tt> metatadata on the instruction tells the optimizer
and code generator that this load is not expected to be reused in the cache.
The code generator may select special instructions to save cache bandwidth,
such as the <tt>MOVNT</tt> intruction on x86.</p>
<h5>Semantics:</h5>
<p>The location of memory pointed to is loaded. If the value being loaded is of