[llvm-commits] CVS: llvm/lib/Analysis/DataStructure/Local.cpp
Chris Lattner
lattner at cs.uiuc.edu
Sat Nov 8 21:34:01 PST 2003
Changes in directory llvm/lib/Analysis/DataStructure:
Local.cpp updated: 1.68 -> 1.69
---
Log message:
Add support for memmove
---
Diffs of the changes: (+9 -0)
Index: llvm/lib/Analysis/DataStructure/Local.cpp
diff -u llvm/lib/Analysis/DataStructure/Local.cpp:1.68 llvm/lib/Analysis/DataStructure/Local.cpp:1.69
--- llvm/lib/Analysis/DataStructure/Local.cpp:1.68 Sat Nov 8 15:55:50 2003
+++ llvm/lib/Analysis/DataStructure/Local.cpp Sat Nov 8 21:32:52 2003
@@ -446,6 +446,15 @@
if (DSNode *N = RetNH.getNode())
N->setModifiedMarker();
return;
+ } else if (F->getName() == "memmove") {
+ // Merge the first & second arguments with the result, and mark the
+ // memory read and modified.
+ DSNodeHandle RetNH = getValueDest(*CS.getInstruction());
+ RetNH.mergeWith(getValueDest(**CS.arg_begin()));
+ RetNH.mergeWith(getValueDest(**(CS.arg_begin()+1)));
+ if (DSNode *N = RetNH.getNode())
+ N->setModifiedMarker()->setReadMarker();
+ return;
} else if (F->getName() == "bzero") {
// Mark the memory modified.
DSNodeHandle H = getValueDest(**CS.arg_begin());
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