Refactor a lot of patchpoint/stackmap related code to simplify and make it

[oota-llvm.git] / include / llvm / CodeGen / MachineFrameInfo.h

diff --git a/include/llvm/CodeGen/MachineFrameInfo.h b/include/llvm/CodeGen/MachineFrameInfo.h
index bf75578fbc30fcf3a036d084e6b4cf39c710b379..022634df87cf571de0a8e74b8594022c3cc6aedd 100644 (file)
--- a/include/llvm/CodeGen/MachineFrameInfo.h
+++ b/include/llvm/CodeGen/MachineFrameInfo.h
@@ -27,6 +27,7 @@ class Type;
 class MachineFunction;
 class MachineBasicBlock;
 class TargetFrameLowering;
+class TargetMachine;
 class BitVector;
 class Value;
 class AllocaInst;
@@ -119,6 +120,8 @@ class MachineFrameInfo {
         isSpillSlot(isSS), MayNeedSP(NSP), Alloca(Val), PreAllocated(false) {}
   };
 
+  const TargetMachine &TM;
+
   /// Objects - The list of stack objects allocated...
   ///
   std::vector<StackObject> Objects;
@@ -201,10 +204,6 @@ class MachineFrameInfo {
   /// CSIValid - Has CSInfo been set yet?
   bool CSIValid;
 
-  /// TargetFrameLowering - Target information about frame layout.
-  ///
-  const TargetFrameLowering &TFI;
-
   /// LocalFrameObjects - References to frame indices which are mapped
   /// into the local frame allocation block. <FrameIdx, LocalOffset>
   SmallVector<std::pair<int, int64_t>, 32> LocalFrameObjects;
@@ -221,8 +220,13 @@ class MachineFrameInfo {
   /// just allocate them normally.
   bool UseLocalStackAllocationBlock;
 
+  /// Whether the "realign-stack" option is on.
+  bool RealignOption;
+
+  const TargetFrameLowering *getFrameLowering() const;
 public:
-    explicit MachineFrameInfo(const TargetFrameLowering &tfi) : TFI(tfi) {
+    explicit MachineFrameInfo(const TargetMachine &TM, bool RealignOpt)
+    : TM(TM), RealignOption(RealignOpt) {
     StackSize = NumFixedObjects = OffsetAdjustment = MaxAlignment = 0;
     HasVarSizedObjects = false;
     FrameAddressTaken = false;
@@ -416,6 +420,9 @@ public:
   ///
   void setStackSize(uint64_t Size) { StackSize = Size; }
 
+  /// Estimate and return the size of the stack frame.
+  unsigned estimateStackSize(const MachineFunction &MF) const;
+
   /// getOffsetAdjustment - Return the correction for frame offsets.
   ///
   int getOffsetAdjustment() const { return OffsetAdjustment; }