Hoist hasLoadFromStackSlot and hasStoreToStackSlot.

These the methods are target-independent since they simply scan the
memory operands.  They can live in TargetInstrInfoImpl.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137063 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 42 insertions, 57 deletions

diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h
index f663566..3b21be6 100644
--- a/include/llvm/Target/TargetInstrInfo.h
+++ b/include/llvm/Target/TargetInstrInfo.h
@@ -693,6 +693,12 @@ public:
                                      unsigned &SrcOpIdx2) const;
   virtual bool canFoldMemoryOperand(const MachineInstr *MI,
                                     const SmallVectorImpl<unsigned> &Ops) const;
+  virtual bool hasLoadFromStackSlot(const MachineInstr *MI,
+                                    const MachineMemOperand *&MMO,
+                                    int &FrameIndex) const;
+  virtual bool hasStoreToStackSlot(const MachineInstr *MI,
+                                   const MachineMemOperand *&MMO,
+                                   int &FrameIndex) const;
   virtual bool PredicateInstruction(MachineInstr *MI,
                             const SmallVectorImpl<MachineOperand> &Pred) const;
   virtual void reMaterialize(MachineBasicBlock &MBB,
diff --git a/lib/CodeGen/TargetInstrInfoImpl.cpp b/lib/CodeGen/TargetInstrInfoImpl.cpp
index 86e71d8..bd9c469 100644
--- a/lib/CodeGen/TargetInstrInfoImpl.cpp
+++ b/lib/CodeGen/TargetInstrInfoImpl.cpp
@@ -160,6 +160,42 @@ bool TargetInstrInfoImpl::PredicateInstruction(MachineInstr *MI,
   return MadeChange;
 }
 
+bool TargetInstrInfoImpl::hasLoadFromStackSlot(const MachineInstr *MI,
+                                        const MachineMemOperand *&MMO,
+                                        int &FrameIndex) const {
+  for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
+         oe = MI->memoperands_end();
+       o != oe;
+       ++o) {
+    if ((*o)->isLoad() && (*o)->getValue())
+      if (const FixedStackPseudoSourceValue *Value =
+          dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
+        FrameIndex = Value->getFrameIndex();
+        MMO = *o;
+        return true;
+      }
+  }
+  return false;
+}
+
+bool TargetInstrInfoImpl::hasStoreToStackSlot(const MachineInstr *MI,
+                                       const MachineMemOperand *&MMO,
+                                       int &FrameIndex) const {
+  for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
+         oe = MI->memoperands_end();
+       o != oe;
+       ++o) {
+    if ((*o)->isStore() && (*o)->getValue())
+      if (const FixedStackPseudoSourceValue *Value =
+          dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
+        FrameIndex = Value->getFrameIndex();
+        MMO = *o;
+        return true;
+      }
+  }
+  return false;
+}
+
 void TargetInstrInfoImpl::reMaterialize(MachineBasicBlock &MBB,
                                         MachineBasicBlock::iterator I,
                                         unsigned DestReg,
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index fda0474..c5474ff 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -856,24 +856,6 @@ unsigned X86InstrInfo::isLoadFromStackSlotPostFE(const MachineInstr *MI,
   return 0;
 }
 
-bool X86InstrInfo::hasLoadFromStackSlot(const MachineInstr *MI,
-                                        const MachineMemOperand *&MMO,
-                                        int &FrameIndex) const {
-  for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
-         oe = MI->memoperands_end();
-       o != oe;
-       ++o) {
-    if ((*o)->isLoad() && (*o)->getValue())
-      if (const FixedStackPseudoSourceValue *Value =
-          dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
-        FrameIndex = Value->getFrameIndex();
-        MMO = *o;
-        return true;
-      }
-  }
-  return false;
-}
-
 unsigned X86InstrInfo::isStoreToStackSlot(const MachineInstr *MI,
                                           int &FrameIndex) const {
   if (isFrameStoreOpcode(MI->getOpcode()))
@@ -896,24 +878,6 @@ unsigned X86InstrInfo::isStoreToStackSlotPostFE(const MachineInstr *MI,
   return 0;
 }
 
-bool X86InstrInfo::hasStoreToStackSlot(const MachineInstr *MI,
-                                       const MachineMemOperand *&MMO,
-                                       int &FrameIndex) const {
-  for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
-         oe = MI->memoperands_end();
-       o != oe;
-       ++o) {
-    if ((*o)->isStore() && (*o)->getValue())
-      if (const FixedStackPseudoSourceValue *Value =
-          dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
-        FrameIndex = Value->getFrameIndex();
-        MMO = *o;
-        return true;
-      }
-  }
-  return false;
-}
-
 /// regIsPICBase - Return true if register is PIC base (i.e.g defined by
 /// X86::MOVPC32r.
 static bool regIsPICBase(unsigned BaseReg, const MachineRegisterInfo &MRI) {
diff --git a/lib/Target/X86/X86InstrInfo.h b/lib/Target/X86/X86InstrInfo.h
index 931d6ca..f03c345 100644
--- a/lib/Target/X86/X86InstrInfo.h
+++ b/lib/Target/X86/X86InstrInfo.h
@@ -166,17 +166,6 @@ public:
   unsigned isLoadFromStackSlotPostFE(const MachineInstr *MI,
                                      int &FrameIndex) const;
 
-  /// hasLoadFromStackSlot - If the specified machine instruction has
-  /// a load from a stack slot, return true along with the FrameIndex
-  /// of the loaded stack slot and the machine mem operand containing
-  /// the reference.  If not, return false.  Unlike
-  /// isLoadFromStackSlot, this returns true for any instructions that
-  /// loads from the stack.  This is a hint only and may not catch all
-  /// cases.
-  bool hasLoadFromStackSlot(const MachineInstr *MI,
-                            const MachineMemOperand *&MMO,
-                            int &FrameIndex) const;
-
   unsigned isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const;
   /// isStoreToStackSlotPostFE - Check for post-frame ptr elimination
   /// stack locations as well.  This uses a heuristic so it isn't
@@ -184,16 +173,6 @@ public:
   unsigned isStoreToStackSlotPostFE(const MachineInstr *MI,
                                     int &FrameIndex) const;
 
-  /// hasStoreToStackSlot - If the specified machine instruction has a
-  /// store to a stack slot, return true along with the FrameIndex of
-  /// the loaded stack slot and the machine mem operand containing the
-  /// reference.  If not, return false.  Unlike isStoreToStackSlot,
-  /// this returns true for any instructions that loads from the
-  /// stack.  This is a hint only and may not catch all cases.
-  bool hasStoreToStackSlot(const MachineInstr *MI,
-                           const MachineMemOperand *&MMO,
-                           int &FrameIndex) const;
-
   bool isReallyTriviallyReMaterializable(const MachineInstr *MI,
                                          AliasAnalysis *AA) const;
   void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,