[llvm-commits] CVS: llvm/docs/AliasAnalysis.html
Chris Lattner
lattner at cs.uiuc.edu
Tue Jul 27 00:50:17 PDT 2004
Changes in directory llvm/docs:
AliasAnalysis.html updated: 1.22 -> 1.23
---
Log message:
New functionality
---
Diffs of the changes: (+6 -4)
Index: llvm/docs/AliasAnalysis.html
diff -u llvm/docs/AliasAnalysis.html:1.22 llvm/docs/AliasAnalysis.html:1.23
--- llvm/docs/AliasAnalysis.html:1.22 Thu Jul 1 10:33:24 2004
+++ llvm/docs/AliasAnalysis.html Tue Jul 27 02:50:07 2004
@@ -699,9 +699,11 @@
<div class="doc_text">
<p>This pass implements a simple context-sensitive mod/ref and alias analysis
-for internal global variables that don't "have their address taken". If a
-global does not have its address taken, the pass knows that no pointers alias
-the global.
+for internal global variables that don't "have their address taken". If a
+global does not have its address taken, the pass knows that no pointers alias
+the global. This pass also keeps track of functions that it knows never access
+memory or never read memory. This allows certain optimizations (e.g. GCSE) to
+eliminate call instructions entirely.
</p>
<p>The real power of this pass is that it provides context-sensitive mod/ref
@@ -938,7 +940,7 @@
<a href="mailto:sabre at nondot.org">Chris Lattner</a><br>
<a href="http://llvm.cs.uiuc.edu">LLVM Compiler Infrastructure</a><br>
- Last modified: $Date: 2004/07/01 15:33:24 $
+ Last modified: $Date: 2004/07/27 07:50:07 $
</address>
</body>
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