MBlaze delay slot filler was not capable of using ADDK and variants to fill delay...

[oota-llvm.git] / docs / LangRef.html

diff --git a/docs/LangRef.html b/docs/LangRef.html
index f15f139aeb384cbd216331638de5c219a76783f6..76fa06f49c24d0746822bad95173c69840d85dbd 100644 (file)
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -1021,8 +1021,9 @@ declare signext i8 @returns_signed_char()
       registers).  Use of this attribute is target-specific.</dd>
 
   <dt><tt><b><a name="byval">byval</a></b></tt></dt>
-  <dd>This indicates that the pointer parameter should really be passed by value
-      to the function.  The attribute implies that a hidden copy of the pointee
+  <dd><p>This indicates that the pointer parameter should really be passed by
+      value to the function.  The attribute implies that a hidden copy of the
+      pointee
       is made between the caller and the callee, so the callee is unable to
       modify the value in the callee.  This attribute is only valid on LLVM
       pointer arguments.  It is generally used to pass structs and arrays by
@@ -1030,10 +1031,13 @@ declare signext i8 @returns_signed_char()
       to belong to the caller not the callee (for example,
       <tt><a href="#readonly">readonly</a></tt> functions should not write to
       <tt>byval</tt> parameters). This is not a valid attribute for return
-      values.  The byval attribute also supports specifying an alignment with
-      the align attribute.  This has a target-specific effect on the code
-      generator that usually indicates a desired alignment for the synthesized
-      stack slot.</dd>
+      values.</p>
+      
+      <p>The byval attribute also supports specifying an alignment with
+      the align attribute.  It indicates the alignment of the stack slot to
+      form and the known alignment of the pointer specified to the call site. If
+      the alignment is not specified, then the code generator makes a
+      target-specific assumption.</p></dd>
 
   <dt><tt><b><a name="sret">sret</a></b></tt></dt>
   <dd>This indicates that the pointer parameter specifies the address of a
@@ -2625,8 +2629,8 @@ call void asm alignstack "eieio", ""()
 <div class="doc_text">
 
 <p>The call instructions that wrap inline asm nodes may have a "!srcloc" MDNode
-   attached to it that contains a constant integer.  If present, the code
-   generator will use the integer as the location cookie value when report
+   attached to it that contains a list of constant integers.  If present, the
+  code generator will use the integer as the location cookie value when report
    errors through the LLVMContext error reporting mechanisms.  This allows a
    front-end to correlate backend errors that occur with inline asm back to the
    source code that produced it.  For example:</p>
@@ -2638,7 +2642,8 @@ call void asm sideeffect "something bad", ""()<b>, !srcloc !42</b>
 </pre>
 
 <p>It is up to the front-end to make sense of the magic numbers it places in the
-   IR.</p>
+   IR.  If the MDNode contains multiple constants, the code generator will use
+   the one that corresponds to the line of the asm that the error occurs on.</p>
 
 </div>
 
@@ -4126,6 +4131,14 @@ Instruction</a> </div>
    <a href="#t_array">array</a> type.  The operands are constant indices to
    specify which value to extract in a similar manner as indices in a
    '<tt><a href="#i_getelementptr">getelementptr</a></tt>' instruction.</p>
+   <p>The major differences to <tt>getelementptr</tt> indexing are:</p>
+     <ul>
+       <li>Since the value being indexed is not a pointer, the first index is
+           omitted and assumed to be zero.</li>
+       <li>At least one index must be specified.</li>
+       <li>Not only struct indices but also array indices must be in
+           bounds.</li>
+     </ul>
 
 <h5>Semantics:</h5>
 <p>The result is the value at the position in the aggregate specified by the
@@ -4160,7 +4173,7 @@ Instruction</a> </div>
    <a href="#t_array">array</a> type.  The second operand is a first-class
    value to insert.  The following operands are constant indices indicating
    the position at which to insert the value in a similar manner as indices in a
-   '<tt><a href="#i_getelementptr">getelementptr</a></tt>' instruction.  The
+   '<tt><a href="#i_extractvalue">extractvalue</a></tt>' instruction.  The
    value to insert must have the same type as the value identified by the
    indices.</p>
 
@@ -7501,7 +7514,7 @@ LLVM</a>.</p>
 
 <h5>Syntax:</h5>
 <pre>
-  declare {}* @llvm.invariant.start(i64 &lt;size&gt;, i8* nocapture &lt;ptr&gt;) readonly
+  declare {}* @llvm.invariant.start(i64 &lt;size&gt;, i8* nocapture &lt;ptr&gt;)
 </pre>
 
 <h5>Overview:</h5>