Pass AliasAnalysis thru to DAGCombiner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30984 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 1cac34d..ba90e23 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -30,6 +30,7 @@
#define DEBUG_TYPE "dagcombine"
#include "llvm/ADT/Statistic.h"
+#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MathExtras.h"
@@ -60,6 +61,9 @@
// Worklist of all of the nodes that need to be simplified.
std::vector<SDNode*> WorkList;
+ // AA - Used for DAG load/store alias analysis.
+ AliasAnalysis &AA;
+
/// AddUsersToWorkList - When an instruction is simplified, add all users of
/// the instruction to the work lists because they might get more simplified
/// now.
@@ -262,8 +266,11 @@
SDOperand FindBetterChain(SDNode *N, SDOperand Chain);
public:
- DAGCombiner(SelectionDAG &D)
- : DAG(D), TLI(D.getTargetLoweringInfo()), AfterLegalize(false) {}
+ DAGCombiner(SelectionDAG &D, AliasAnalysis &A)
+ : DAG(D),
+ TLI(D.getTargetLoweringInfo()),
+ AfterLegalize(false),
+ AA(A) {}
/// Run - runs the dag combiner on all nodes in the work list
void Run(bool RunningAfterLegalize);
@@ -4133,8 +4140,8 @@
// SelectionDAG::Combine - This is the entry point for the file.
//
-void SelectionDAG::Combine(bool RunningAfterLegalize) {
+void SelectionDAG::Combine(bool RunningAfterLegalize, AliasAnalysis &AA) {
/// run - This is the main entry point to this class.
///
- DAGCombiner(*this).Run(RunningAfterLegalize);
+ DAGCombiner(*this, AA).Run(RunningAfterLegalize);
}