[llvm] r309991 - DAG: Provide access to Pass instance from SelectionDAG

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Thu Aug  3 14:54:00 2017
New Revision: 309991

URL: http://llvm.org/viewvc/llvm-project?rev=309991&view=rev
Log:
DAG: Provide access to Pass instance from SelectionDAG

This allows accessing an analysis pass during lowering.

Modified:
    llvm/trunk/include/llvm/CodeGen/SelectionDAG.h
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

Modified: llvm/trunk/include/llvm/CodeGen/SelectionDAG.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/SelectionDAG.h?rev=309991&r1=309990&r2=309991&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/SelectionDAG.h (original)
+++ llvm/trunk/include/llvm/CodeGen/SelectionDAG.h Thu Aug  3 14:54:00 2017
@@ -211,6 +211,7 @@ class SelectionDAG {
   const SelectionDAGTargetInfo *TSI = nullptr;
   const TargetLowering *TLI = nullptr;
   MachineFunction *MF;
+  Pass *SDAGISelPass = nullptr;
   LLVMContext *Context;
   CodeGenOpt::Level OptLevel;
 
@@ -366,13 +367,16 @@ public:
   ~SelectionDAG();
 
   /// Prepare this SelectionDAG to process code in the given MachineFunction.
-  void init(MachineFunction &NewMF, OptimizationRemarkEmitter &NewORE);
+  void init(MachineFunction &NewMF, OptimizationRemarkEmitter &NewORE,
+            Pass *PassPtr);
 
   /// Clear state and free memory necessary to make this
   /// SelectionDAG ready to process a new block.
   void clear();
 
   MachineFunction &getMachineFunction() const { return *MF; }
+  const Pass *getPass() const { return SDAGISelPass; }
+
   const DataLayout &getDataLayout() const { return MF->getDataLayout(); }
   const TargetMachine &getTarget() const { return TM; }
   const TargetSubtargetInfo &getSubtarget() const { return MF->getSubtarget(); }

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=309991&r1=309990&r2=309991&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Thu Aug  3 14:54:00 2017
@@ -892,8 +892,10 @@ SelectionDAG::SelectionDAG(const TargetM
 }
 
 void SelectionDAG::init(MachineFunction &NewMF,
-                        OptimizationRemarkEmitter &NewORE) {
+                        OptimizationRemarkEmitter &NewORE,
+                        Pass *PassPtr) {
   MF = &NewMF;
+  SDAGISelPass = PassPtr;
   ORE = &NewORE;
   TLI = getSubtarget().getTargetLowering();
   TSI = getSubtarget().getSelectionDAGInfo();

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=309991&r1=309990&r2=309991&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Thu Aug  3 14:54:00 2017
@@ -414,7 +414,7 @@ bool SelectionDAGISel::runOnMachineFunct
 
   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.