Changes in directory llvm/lib/CodeGen/SelectionDAG:
DAGCombiner.cpp updated: 1.298 -> 1.299
---
Log message:
Don't create indexed load / store with zero offset!
---
Diffs of the changes: (+8 -0)
DAGCombiner.cpp | 8 ++++++++
1 files changed, 8 insertions(+)
Index: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.298
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.299
--- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.298 Tue May 1 03:53:39 2007
+++ llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Thu May 3 18:52:19 2007
@@ -3110,6 +3110,10 @@
ISD::MemIndexedMode AM = ISD::UNINDEXED;
if (!TLI.getPreIndexedAddressParts(N, BasePtr, Offset, AM, DAG))
return false;
+ // Don't create a indexed load / store with zero offset.
+ if (isa<ConstantSDNode>(Offset) &&
+ cast<ConstantSDNode>(Offset)->getValue() == 0)
+ return false;
// Try turning it into a pre-indexed load / store except when:
// 1) The base is a frame index.
@@ -3239,6 +3243,10 @@
std::swap(BasePtr, Offset);
if (Ptr != BasePtr)
continue;
+ // Don't create a indexed load / store with zero offset.
+ if (isa<ConstantSDNode>(Offset) &&
+ cast<ConstantSDNode>(Offset)->getValue() == 0)
+ continue;
// Try turning it into a post-indexed load / store except when
// 1) All uses are load / store ops that use it as base ptr.
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