PrologEpilogInserter: Rewrite API to determine callee save regsiters.

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

diff --git a/include/llvm/CodeGen/MachineFrameInfo.h b/include/llvm/CodeGen/MachineFrameInfo.h
index 0f5a4b1b09ec771889a16590cfb28188fa9a1fd6..cbc4e66ccc462e51fe1c14986aaa13e2ebcfdde2 100644 (file)
--- a/include/llvm/CodeGen/MachineFrameInfo.h
+++ b/include/llvm/CodeGen/MachineFrameInfo.h
@@ -229,9 +229,9 @@ class MachineFrameInfo {
   /// Whether the "realign-stack" option is on.
   bool RealignOption;
 
-  /// True if the function includes inline assembly that adjusts the stack
-  /// pointer.
-  bool HasInlineAsmWithSPAdjust;
+  /// True if the function dynamically adjusts the stack pointer through some
+  /// opaque mechanism like inline assembly or Win32 EH.
+  bool HasOpaqueSPAdjustment;
 
   /// True if the function contains a call to the llvm.vastart intrinsic.
   bool HasVAStart;
@@ -269,7 +269,7 @@ public:
     LocalFrameSize = 0;
     LocalFrameMaxAlign = 0;
     UseLocalStackAllocationBlock = false;
-    HasInlineAsmWithSPAdjust = false;
+    HasOpaqueSPAdjustment = false;
     HasVAStart = false;
     HasMustTailInVarArgFunc = false;
     Save = nullptr;
@@ -468,9 +468,9 @@ public:
   bool hasCalls() const { return HasCalls; }
   void setHasCalls(bool V) { HasCalls = V; }
 
-  /// Returns true if the function contains any stack-adjusting inline assembly.
-  bool hasInlineAsmWithSPAdjust() const { return HasInlineAsmWithSPAdjust; }
-  void setHasInlineAsmWithSPAdjust(bool B) { HasInlineAsmWithSPAdjust = B; }
+  /// Returns true if the function contains opaque dynamic stack adjustments.
+  bool hasOpaqueSPAdjustment() const { return HasOpaqueSPAdjustment; }
+  void setHasOpaqueSPAdjustment(bool B) { HasOpaqueSPAdjustment = B; }
 
   /// Returns true if the function calls the llvm.va_start intrinsic.
   bool hasVAStart() const { return HasVAStart; }
@@ -541,6 +541,14 @@ public:
     return Objects[ObjectIdx+NumFixedObjects].Size == ~0ULL;
   }
 
+  /// Returns true if the specified index corresponds to a variable sized
+  /// object.
+  bool isVariableSizedObjectIndex(int ObjectIdx) const {
+    assert(unsigned(ObjectIdx + NumFixedObjects) < Objects.size() &&
+           "Invalid Object Idx!");
+    return Objects[ObjectIdx + NumFixedObjects].Size == 0;
+  }
+
   /// Create a new statically sized stack object, returning
   /// a nonnegative identifier to represent it.
   int CreateStackObject(uint64_t Size, unsigned Alignment, bool isSS,