Use instruction itinerary to determine what instructions are 'cheap'.

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

diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index 595872ad2d742b84807c415a4adb6ec578a14e69..e2de7582c6c2955f1a913ca2e264c79c665b1551 100644 (file)
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -37,6 +37,7 @@ class MCContext;
 class Pass;
 class TargetMachine;
 class TargetRegisterClass;
+struct MachinePointerInfo;
 
 template <>
 struct ilist_traits<MachineBasicBlock>
@@ -114,9 +115,14 @@ class MachineFunction {
   ///
   unsigned FunctionNumber;
   
-  /// The alignment of the function.
+  /// Alignment - The alignment of the function.
   unsigned Alignment;
 
+  /// CallsSetJmp - True if the function calls setjmp or sigsetjmp. This is used
+  /// to limit optimizations which cannot reason about the control flow of
+  /// setjmp.
+  bool CallsSetJmp;
+
   MachineFunction(const MachineFunction &); // DO NOT IMPLEMENT
   void operator=(const MachineFunction&);   // DO NOT IMPLEMENT
 public:
@@ -181,6 +187,17 @@ public:
   void EnsureAlignment(unsigned A) {
     if (Alignment < A) Alignment = A;
   }
+
+  /// callsSetJmp - Returns true if the function calls setjmp or sigsetjmp.
+  bool callsSetJmp() const {
+    return CallsSetJmp;
+  }
+
+  /// setCallsSetJmp - Set a flag that indicates if there's a call to setjmp or
+  /// sigsetjmp.
+  void setCallsSetJmp(bool B) {
+    CallsSetJmp = B;
+  }
   
   /// getInfo - Keep track of various per-function pieces of information for
   /// backends that would like to do so.
@@ -250,7 +267,7 @@ public:
 
   /// verify - Run the current MachineFunction through the machine code
   /// verifier, useful for debugger use.
-  void verify(Pass *p=NULL, bool allowDoubleDefs=false) const;
+  void verify(Pass *p=NULL) const;
 
   // Provide accessors for the MachineBasicBlock list...
   typedef BasicBlockListType::iterator iterator;
@@ -352,10 +369,11 @@ public:
   /// getMachineMemOperand - Allocate a new MachineMemOperand.
   /// MachineMemOperands are owned by the MachineFunction and need not be
   /// explicitly deallocated.
-  MachineMemOperand *getMachineMemOperand(const Value *v, unsigned f,
-                                          int64_t o, uint64_t s,
-                                          unsigned base_alignment);
-
+  MachineMemOperand *getMachineMemOperand(MachinePointerInfo PtrInfo,
+                                          unsigned f, uint64_t s,
+                                          unsigned base_alignment,
+                                          const MDNode *TBAAInfo = 0);
+  
   /// getMachineMemOperand - Allocate a new MachineMemOperand by copying
   /// an existing one, adjusting by an offset and using the given size.
   /// MachineMemOperands are owned by the MachineFunction and need not be