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Incorporate information about deleting instructions from a basic block,

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contributed by Tanya.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3692 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2002-09-12 19:06:51 +00:00
parent 1a7db9be56
commit 4e1f96b1ee
1 changed files with 19 additions and 3 deletions
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@ -620,7 +620,7 @@ will create an <tt>AllocaInst</tt> instance that represents the
allocation of one integer in the current stack frame, at runtime.
Each <tt>Instruction</tt> subclass is likely to have varying default
parameters which change the semantics of the instruction, so refer to
the <a href="/doxygen/classInstruction.h">doxygen documentation for
the <a href="/doxygen/classInstruction.html">doxygen documentation for
the subclass of Instruction</a> that you're interested in
instantiating.</p>
@ -701,7 +701,23 @@ instructions and adding them to <tt>BasicBlock</tt>s.
<!--_______________________________________________________________________-->
</ul><h4><a name="schanges_deleting"><hr size=0>Deleting
<tt>Instruction</tt>s</h4><ul>
<tt>Instruction</tt>s</h4><ul>
Deleting an instruction from an existing sequence of instructions that form a <a
href="#BasicBlock"><tt>BasicBlock</tt></a> is very straightforward. First, you
must have a pointer to the instruction that you wish to delete. Second, you
need to obtain the pointer to that instruction's basic block. You use the
pointer to the basic block to get its list of instructions and then use the
erase function to remove your instruction.<p>
For example:<p>
<pre>
<a href="#Instruction">Instruction</a> *I = .. ;
<a href="#BasicBlock">BasicBlock</a> *BB = I->getParent();
BB->getInstList().erase(I);
</pre><p>
<!--_______________________________________________________________________-->
</ul><h4><a name="schanges_replacing"><hr size=0>Replacing an
@ -1559,6 +1575,6 @@ pointer to the parent Function.
<a href="mailto:sabre@nondot.org">Chris Lattner</a></address>
<!-- Created: Tue Aug 6 15:00:33 CDT 2002 -->
<!-- hhmts start -->
Last modified: Thu Sep 12 12:18:04 CDT 2002
Last modified: Thu Sep 12 14:06:40 CDT 2002
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</font></body></html>