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| author | Andrew Lenharth <andrewl@lenharth.org> | 2006-12-08 17:13:00 +0000 |
|---|---|---|
| committer | Andrew Lenharth <andrewl@lenharth.org> | 2006-12-08 17:13:00 +0000 |
| commit | 75e1068c60828682833c0e24f77acc26525ac258 (patch) | |
| tree | 8deea6c3b2c38343affb74e8ad74c063a8548593 | |
| parent | 5c2a46052b3fa69dbdae483870ebe1b9e50386b5 (diff) | |
| download | external_llvm-75e1068c60828682833c0e24f77acc26525ac258.zip external_llvm-75e1068c60828682833c0e24f77acc26525ac258.tar.gz external_llvm-75e1068c60828682833c0e24f77acc26525ac258.tar.bz2 | |
Packed Structure Definitions (docs)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32357 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | docs/BytecodeFormat.html | 4 | ||||
| -rw-r--r-- | docs/LangRef.html | 33 |
2 files changed, 37 insertions, 0 deletions
diff --git a/docs/BytecodeFormat.html b/docs/BytecodeFormat.html index 669e719..524879f 100644 --- a/docs/BytecodeFormat.html +++ b/docs/BytecodeFormat.html @@ -862,6 +862,10 @@ missing otherwise.</td> <td class="td_left">Type ID for structure types (14)</td> </tr> <tr> + <td><a href="#uint32_vbr">uint32_vbr</a></td> + <td class="td_left">Value 0 if a normal structure, 1 if a packed structure</td> + </tr> + <tr> <td><a href="#zlist">zlist</a>(<a href="#uint24_vbr">uint24_vbr</a>)</td> <td class="td_left">Slot number of each of the element's fields.</td> </tr> diff --git a/docs/LangRef.html b/docs/LangRef.html index 64725a7..35585f2 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -40,6 +40,7 @@ <li><a href="#t_function">Function Type</a></li> <li><a href="#t_pointer">Pointer Type</a></li> <li><a href="#t_struct">Structure Type</a></li> + <li><a href="#t_pstruct">Packed Structure Type</a></li> <li><a href="#t_packed">Packed Type</a></li> <li><a href="#t_opaque">Opaque Type</a></li> </ol> @@ -933,6 +934,38 @@ instruction.</p> </div> <!-- _______________________________________________________________________ --> +<div class="doc_subsubsection"> <a name="t_pstruct">Packed Structure Type</a> +</div> +<div class="doc_text"> +<h5>Overview:</h5> +<p>The packed structure type is used to represent a collection of data members +together in memory. There is no padding between fields. Further, the alignment +of a packed structure is 1 byte. The elements of a packed structure may +be any type that has a size.</p> +<p>Structures are accessed using '<tt><a href="#i_load">load</a></tt> +and '<tt><a href="#i_store">store</a></tt>' by getting a pointer to a +field with the '<tt><a href="#i_getelementptr">getelementptr</a></tt>' +instruction.</p> +<h5>Syntax:</h5> +<pre> < { <type list> } > <br></pre> +<h5>Examples:</h5> +<table class="layout"> + <tr class="layout"> + <td class="left"> + <tt> < { int, int, int } > </tt><br/> + <tt> < { float, int (int) * } > </tt><br/> + </td> + <td class="left"> + a triple of three <tt>int</tt> values<br/> + A pair, where the first element is a <tt>float</tt> and the second element + is a <a href="#t_pointer">pointer</a> to a <a href="#t_function">function</a> + that takes an <tt>int</tt>, returning an <tt>int</tt>.<br/> + </td> + </tr> +</table> +</div> + +<!-- _______________________________________________________________________ --> <div class="doc_subsubsection"> <a name="t_pointer">Pointer Type</a> </div> <div class="doc_text"> <h5>Overview:</h5> |