Remove the LowerSetJmp pass. It wasn't used effectively by any of the targets.

This is some of my original LLVM code. *wipes tear*


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136821 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 8 insertions, 36 deletions

diff --git a/docs/Passes.html b/docs/Passes.html
index b7f70b91cb..9393410a36 100644
--- a/docs/Passes.html
+++ b/docs/Passes.html
@@ -161,7 +161,6 @@ perl -e '$/ = undef; for (split(/\n/, <>)) { s:^ *///? ?::; print "  <p>\n" if !
 <tr><td><a href="#loop-unswitch">-loop-unswitch</a></td><td>Unswitch loops</td></tr>
 <tr><td><a href="#loweratomic">-loweratomic</a></td><td>Lower atomic intrinsics to non-atomic form</td></tr>
 <tr><td><a href="#lowerinvoke">-lowerinvoke</a></td><td>Lower invoke and unwind, for unwindless code generators</td></tr>
-<tr><td><a href="#lowersetjmp">-lowersetjmp</a></td><td>Lower Set Jump</td></tr>
 <tr><td><a href="#lowerswitch">-lowerswitch</a></td><td>Lower SwitchInst's to branches</td></tr>
 <tr><td><a href="#mem2reg">-mem2reg</a></td><td>Promote Memory to Register</td></tr>
 <tr><td><a href="#memcpyopt">-memcpyopt</a></td><td>MemCpy Optimization</td></tr>
@@ -1478,35 +1477,6 @@ if (X &lt; 3) {</pre>
 
 <!-------------------------------------------------------------------------- -->
 <h3>
-  <a name="lowersetjmp">-lowersetjmp: Lower Set Jump</a>
-</h3>
-<div>
-  <p>
-   Lowers <tt>setjmp</tt> and <tt>longjmp</tt> to use the LLVM invoke and unwind
-   instructions as necessary.
-  </p>
-  
-  <p>
-   Lowering of <tt>longjmp</tt> is fairly trivial. We replace the call with a
-   call to the LLVM library function <tt>__llvm_sjljeh_throw_longjmp()</tt>.
-   This unwinds the stack for us calling all of the destructors for
-   objects allocated on the stack.
-  </p>
-  
-  <p>
-   At a <tt>setjmp</tt> call, the basic block is split and the <tt>setjmp</tt>
-   removed. The calls in a function that have a <tt>setjmp</tt> are converted to
-   invoke where the except part checks to see if it's a <tt>longjmp</tt>
-   exception and, if so, if it's handled in the function. If it is, then it gets
-   the value returned by the <tt>longjmp</tt> and goes to where the basic block
-   was split. <tt>invoke</tt> instructions are handled in a similar fashion with
-   the original except block being executed if it isn't a <tt>longjmp</tt>
-   except that is handled by that function.
-  </p>
-</div>
-
-<!-------------------------------------------------------------------------- -->
-<h3>
   <a name="lowerswitch">-lowerswitch: Lower SwitchInst's to branches</a>
 </h3>
 <div>
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index 50cd906119..5cd248c2db 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -576,14 +576,13 @@ it run faster:</p>
 
 <div>
 
-<p>If you're already an LLVM user or developer with out-of-tree changes based
-on LLVM 2.9, this section lists some "gotchas" that you may run into upgrading
-from the previous release.</p>
+<p>If you're already an LLVM user or developer with out-of-tree changes based on
+   LLVM 2.9, this section lists some "gotchas" that you may run into upgrading
+   from the previous release.</p>
 
 <ul>
-<!--
-<li></li>
--->
+  <li>The <code>LowerSetJmp</code> wasn't used effectively by any of the
+      targets and was removed.</li>
 </ul>
 
 </div>
@@ -667,6 +666,9 @@ from the previous release.</p>
     isn't used by the current front-ends. So this was removed during the
     exception handling rewrite.</li>
 
+<li>The <code>LLVMAddLowerSetJmpPass</code> function from the C API was removed
+    because the <code>LowerSetJmp</code> pass was removed.</li>
+
 </ul>
 </div>