DAG: Provide access to Pass instance from SelectionDAG

This allows accessing an analysis pass during lowering.

llvm-svn: 309991

2 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index a396f3368cf..c052bc64d7d 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -892,8 +892,10 @@ SelectionDAG::SelectionDAG(const TargetMachine &tm, CodeGenOpt::Level OL)
 }
 
 void SelectionDAG::init(MachineFunction &NewMF,
-                        OptimizationRemarkEmitter &NewORE) {
+                        OptimizationRemarkEmitter &NewORE,
+                        Pass *PassPtr) {
   MF = &NewMF;
+  SDAGISelPass = PassPtr;
   ORE = &NewORE;
   TLI = getSubtarget().getTargetLowering();
   TSI = getSubtarget().getSelectionDAGInfo();
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index ed9cb09dccb..ceab4d73976 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -414,7 +414,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
 
   SplitCriticalSideEffectEdges(const_cast<Function &>(Fn), DT, LI);
 
-  CurDAG->init(*MF, *ORE);
+  CurDAG->init(*MF, *ORE, this);
   FuncInfo->set(Fn, *MF, CurDAG);
 
   // Now get the optional analyzes if we want to.