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Remove all references to MallocInst and FreeInst

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85177 91177308-0d34-0410-b5e6-96231b3b80d8
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Victor Hernandez 2009-10-26 23:44:29 +00:00
parent 046e78ce55
commit 2fee294b3c
1 changed files with 19 additions and 96 deletions
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@ -156,8 +156,6 @@
</li>
<li><a href="#memoryops">Memory Access and Addressing Operations</a>
<ol>
<li><a href="#i_malloc">'<tt>malloc</tt>' Instruction</a></li>
<li><a href="#i_free">'<tt>free</tt>' Instruction</a></li>
<li><a href="#i_alloca">'<tt>alloca</tt>' Instruction</a></li>
<li><a href="#i_load">'<tt>load</tt>' Instruction</a></li>
<li><a href="#i_store">'<tt>store</tt>' Instruction</a></li>
@ -3833,93 +3831,11 @@ Instruction</a> </div>
<p>A key design point of an SSA-based representation is how it represents
memory. In LLVM, no memory locations are in SSA form, which makes things
very simple. This section describes how to read, write, allocate, and free
very simple. This section describes how to read, write, and allocate
memory in LLVM.</p>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="i_malloc">'<tt>malloc</tt>' Instruction</a>
</div>
<div class="doc_text">
<h5>Syntax:</h5>
<pre>
&lt;result&gt; = malloc &lt;type&gt;[, i32 &lt;NumElements&gt;][, align &lt;alignment&gt;] <i>; yields {type*}:result</i>
</pre>
<h5>Overview:</h5>
<p>The '<tt>malloc</tt>' instruction allocates memory from the system heap and
returns a pointer to it. The object is always allocated in the generic
address space (address space zero).</p>
<h5>Arguments:</h5>
<p>The '<tt>malloc</tt>' instruction allocates
<tt>sizeof(&lt;type&gt;)*NumElements</tt> bytes of memory from the operating
system and returns a pointer of the appropriate type to the program. If
"NumElements" is specified, it is the number of elements allocated, otherwise
"NumElements" is defaulted to be one. If a constant alignment is specified,
the value result of the allocation is guaranteed to be aligned to at least
that boundary. If not specified, or if zero, the target can choose to align
the allocation on any convenient boundary compatible with the type.</p>
<p>'<tt>type</tt>' must be a sized type.</p>
<h5>Semantics:</h5>
<p>Memory is allocated using the system "<tt>malloc</tt>" function, and a
pointer is returned. The result of a zero byte allocation is undefined. The
result is null if there is insufficient memory available.</p>
<h5>Example:</h5>
<pre>
%array = malloc [4 x i8] <i>; yields {[%4 x i8]*}:array</i>
%size = <a href="#i_add">add</a> i32 2, 2 <i>; yields {i32}:size = i32 4</i>
%array1 = malloc i8, i32 4 <i>; yields {i8*}:array1</i>
%array2 = malloc [12 x i8], i32 %size <i>; yields {[12 x i8]*}:array2</i>
%array3 = malloc i32, i32 4, align 1024 <i>; yields {i32*}:array3</i>
%array4 = malloc i32, align 1024 <i>; yields {i32*}:array4</i>
</pre>
<p>Note that the code generator does not yet respect the alignment value.</p>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="i_free">'<tt>free</tt>' Instruction</a>
</div>
<div class="doc_text">
<h5>Syntax:</h5>
<pre>
free &lt;type&gt; &lt;value&gt; <i>; yields {void}</i>
</pre>
<h5>Overview:</h5>
<p>The '<tt>free</tt>' instruction returns memory back to the unused memory heap
to be reallocated in the future.</p>
<h5>Arguments:</h5>
<p>'<tt>value</tt>' shall be a pointer value that points to a value that was
allocated with the '<tt><a href="#i_malloc">malloc</a></tt>' instruction.</p>
<h5>Semantics:</h5>
<p>Access to the memory pointed to by the pointer is no longer defined after
this instruction executes. If the pointer is null, the operation is a
noop.</p>
<h5>Example:</h5>
<pre>
%array = <a href="#i_malloc">malloc</a> [4 x i8] <i>; yields {[4 x i8]*}:array</i>
free [4 x i8]* %array
</pre>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="i_alloca">'<tt>alloca</tt>' Instruction</a>
@ -6624,7 +6540,8 @@ LLVM</a>.</p>
<h5>Example:</h5>
<pre>
%ptr = malloc i32
%mallocP = tail call i8* @malloc(i32 ptrtoint (i32* getelementptr (i32* null, i32 1) to i32))
%ptr = bitcast i8* %mallocP to i32*
store i32 4, %ptr
%result1 = load i32* %ptr <i>; yields {i32}:result1 = 4</i>
@ -6675,7 +6592,8 @@ LLVM</a>.</p>
<h5>Examples:</h5>
<pre>
%ptr = malloc i32
%mallocP = tail call i8* @malloc(i32 ptrtoint (i32* getelementptr (i32* null, i32 1) to i32))
%ptr = bitcast i8* %mallocP to i32*
store i32 4, %ptr
%val1 = add i32 4, 4
@ -6730,7 +6648,8 @@ LLVM</a>.</p>
<h5>Examples:</h5>
<pre>
%ptr = malloc i32
%mallocP = tail call i8* @malloc(i32 ptrtoint (i32* getelementptr (i32* null, i32 1) to i32))
%ptr = bitcast i8* %mallocP to i32*
store i32 4, %ptr
%val1 = add i32 4, 4
@ -6785,7 +6704,8 @@ LLVM</a>.</p>
<h5>Examples:</h5>
<pre>
%ptr = malloc i32
%mallocP = tail call i8* @malloc(i32 ptrtoint (i32* getelementptr (i32* null, i32 1) to i32))
%ptr = bitcast i8* %mallocP to i32*
store i32 4, %ptr
%result1 = call i32 @llvm.atomic.load.add.i32.p0i32( i32* %ptr, i32 4 )
<i>; yields {i32}:result1 = 4</i>
@ -6836,7 +6756,8 @@ LLVM</a>.</p>
<h5>Examples:</h5>
<pre>
%ptr = malloc i32
%mallocP = tail call i8* @malloc(i32 ptrtoint (i32* getelementptr (i32* null, i32 1) to i32))
%ptr = bitcast i8* %mallocP to i32*
store i32 8, %ptr
%result1 = call i32 @llvm.atomic.load.sub.i32.p0i32( i32* %ptr, i32 4 )
<i>; yields {i32}:result1 = 8</i>
@ -6913,7 +6834,8 @@ LLVM</a>.</p>
<h5>Examples:</h5>
<pre>
%ptr = malloc i32
%mallocP = tail call i8* @malloc(i32 ptrtoint (i32* getelementptr (i32* null, i32 1) to i32))
%ptr = bitcast i8* %mallocP to i32*
store i32 0x0F0F, %ptr
%result0 = call i32 @llvm.atomic.load.nand.i32.p0i32( i32* %ptr, i32 0xFF )
<i>; yields {i32}:result0 = 0x0F0F</i>
@ -6991,7 +6913,8 @@ LLVM</a>.</p>
<h5>Examples:</h5>
<pre>
%ptr = malloc i32
%mallocP = tail call i8* @malloc(i32 ptrtoint (i32* getelementptr (i32* null, i32 1) to i32))
%ptr = bitcast i8* %mallocP to i32*
store i32 7, %ptr
%result0 = call i32 @llvm.atomic.load.min.i32.p0i32( i32* %ptr, i32 -2 )
<i>; yields {i32}:result0 = 7</i>