Changes in directory llvm/lib/Analysis/DataStructure:
Local.cpp updated: 1.147 -> 1.148
---
Log message:
I understand now. Shoot.
---
Diffs of the changes: (+3 -21)
Local.cpp | 24 +++---------------------
1 files changed, 3 insertions(+), 21 deletions(-)
Index: llvm/lib/Analysis/DataStructure/Local.cpp
diff -u llvm/lib/Analysis/DataStructure/Local.cpp:1.147
llvm/lib/Analysis/DataStructure/Local.cpp:1.148
--- llvm/lib/Analysis/DataStructure/Local.cpp:1.147 Tue Apr 18 15:59:52 2006
+++ llvm/lib/Analysis/DataStructure/Local.cpp Tue Apr 18 17:36:11 2006
@@ -549,30 +549,12 @@
case Intrinsic::memcpy_i64:
case Intrinsic::memmove_i32:
case Intrinsic::memmove_i64: {
- //This is over aggressive. What these functions do is not make the
- // targets pointers alias, but rather merge the out edges of the graphs
- // for the pointers according to the type merging of the graphs.
- //Simply merging the two graphs is a crude approximation to this.
- //Instead, copy the src pointer graph, then merge the copy with the
- //dest pointer, thus avoiding contaminating the src with info from the
dest
- //I might be wrong though.
-
// Merge the first & second arguments, and mark the memory read and
- // modified. Preserve second graph
+ // modified.
DSNodeHandle RetNH = getValueDest(**CS.arg_begin());
- DSNodeHandle SrcNH = getValueDest(**(CS.arg_begin()+1));
- //copy dsnode
- DSNode* copy = new DSNode(*SrcNH.getNode(),
SrcNH.getNode()->getParentGraph());
- //since this is the target memory, we only are interested in the links.
- //the target will not wind up with a global memory object , unless it
- //was already there (only pointers to global memory objects)
- copy->clearGlobals();
- DSNodeHandle Copy( copy, SrcNH.getOffset());
- RetNH.mergeWith(Copy);
+ RetNH.mergeWith(getValueDest(**(CS.arg_begin()+1)));
if (DSNode *N = RetNH.getNode())
- N->setModifiedMarker();
- if (DSNode *N = SrcNH.getNode())
- N->setReadMarker();
+ N->setModifiedMarker()->setReadMarker();
return;
}
case Intrinsic::memset_i32:
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