Have MachineRegisterInfo take and store the MachineFunction it

was created for rather than the TargetMachine since we only
needed the TM for the subtarget and we can get that from the
MF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215432 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h
index 0b9f8d1..356e882 100644 (file)
--- a/include/llvm/CodeGen/MachineRegisterInfo.h
+++ b/include/llvm/CodeGen/MachineRegisterInfo.h
@@ -17,8 +17,8 @@
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/ADT/iterator_range.h"
+#include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineInstrBundle.h"
-#include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
 #include <vector>
@@ -40,7 +40,7 @@ public:
   };
 
 private:
-  const TargetMachine &TM;
+  const MachineFunction *MF;
   Delegate *TheDelegate;
 
   /// IsSSA - True when the machine function is in SSA form and virtual
@@ -123,11 +123,11 @@ private:
   MachineRegisterInfo(const MachineRegisterInfo&) LLVM_DELETED_FUNCTION;
   void operator=(const MachineRegisterInfo&) LLVM_DELETED_FUNCTION;
 public:
-  explicit MachineRegisterInfo(const TargetMachine &TM);
+  explicit MachineRegisterInfo(const MachineFunction *MF);
   ~MachineRegisterInfo();
 
   const TargetRegisterInfo *getTargetRegisterInfo() const {
-    return TM.getSubtargetImpl()->getRegisterInfo();
+    return MF->getSubtarget().getRegisterInfo();
   }
 
   void resetDelegate(Delegate *delegate) {

diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 2129288..7b73df0 100644 (file)
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -58,7 +58,7 @@ MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM,
     : Fn(F), Target(TM), STI(TM.getSubtargetImpl()), Ctx(mmi.getContext()),
       MMI(mmi), GMI(gmi) {
   if (TM.getSubtargetImpl()->getRegisterInfo())
-    RegInfo = new (Allocator) MachineRegisterInfo(TM);
+    RegInfo = new (Allocator) MachineRegisterInfo(this);
   else
     RegInfo = nullptr;
 

diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp
index 6da1b68..1b95b40 100644 (file)
--- a/lib/CodeGen/MachineRegisterInfo.cpp
+++ b/lib/CodeGen/MachineRegisterInfo.cpp
@@ -23,8 +23,8 @@ using namespace llvm;
 // Pin the vtable to this file.
 void MachineRegisterInfo::Delegate::anchor() {}
 
-MachineRegisterInfo::MachineRegisterInfo(const TargetMachine &TM)
-  : TM(TM), TheDelegate(nullptr), IsSSA(true), TracksLiveness(true) {
+MachineRegisterInfo::MachineRegisterInfo(const MachineFunction *MF)
+  : MF(MF), TheDelegate(nullptr), IsSSA(true), TracksLiveness(true) {
   VRegInfo.reserve(256);
   RegAllocHints.reserve(256);
   UsedRegUnits.resize(getTargetRegisterInfo()->getNumRegUnits());