Fix a few cases where the scheduler is not checking for phys reg copies. The scheduli...

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

diff --git a/include/llvm/CodeGen/ValueTypes.h b/include/llvm/CodeGen/ValueTypes.h
index 292423e272387b7a29aece6f775ef94850adb5aa..22d16222078dfe34e506f80be1a9db1cf05a2b88 100644 (file)
--- a/include/llvm/CodeGen/ValueTypes.h
+++ b/include/llvm/CodeGen/ValueTypes.h
@@ -18,7 +18,7 @@
 
 #include <cassert>
 #include <string>
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
 #include "llvm/Support/MathExtras.h"
 
 namespace llvm {
@@ -26,7 +26,10 @@ namespace llvm {
   class LLVMContext;
   struct EVT;
 
-  class MVT { // MVT = Machine Value Type
+  /// MVT - Machine Value Type.  Every type that is supported natively by some
+  /// processor targeted by LLVM occurs here.  This means that any legal value
+  /// type can be represented by a MVT.
+  class MVT {
   public:
     enum SimpleValueType {
       // If you change this numbering, you must change the values in
@@ -76,14 +79,14 @@ namespace llvm {
 
       x86mmx         =  33,   // This is an X86 MMX value
 
-      Flag           =  34,   // This glues nodes together during pre-RA sched
+      Glue           =  34,   // This glues nodes together during pre-RA sched
 
       isVoid         =  35,   // This has no value
 
       LAST_VALUETYPE =  36,   // This always remains at the end of the list.
 
       // This is the current maximum for LAST_VALUETYPE.
-      // EVT::MAX_ALLOWED_VALUETYPE is used for asserts and to size bit vectors
+      // MVT::MAX_ALLOWED_VALUETYPE is used for asserts and to size bit vectors
       // This value must be a multiple of 32.
       MAX_ALLOWED_VALUETYPE = 64,
 
@@ -130,6 +133,7 @@ namespace llvm {
     bool operator>(const MVT& S)  const { return SimpleTy >  S.SimpleTy; }
     bool operator<(const MVT& S)  const { return SimpleTy <  S.SimpleTy; }
     bool operator==(const MVT& S) const { return SimpleTy == S.SimpleTy; }
+    bool operator!=(const MVT& S) const { return SimpleTy != S.SimpleTy; }
     bool operator>=(const MVT& S) const { return SimpleTy >= S.SimpleTy; }
     bool operator<=(const MVT& S) const { return SimpleTy <= S.SimpleTy; }
 
@@ -158,7 +162,7 @@ namespace llvm {
       return !(NElts & (NElts - 1));
     }
 
-    /// getPow2VectorType - Widens the length of the given vector EVT up to
+    /// getPow2VectorType - Widens the length of the given vector MVT up to
     /// the nearest power of 2 and returns that type.
     MVT getPow2VectorType() const {
       if (isPow2VectorType())
@@ -277,6 +281,18 @@ namespace llvm {
       }
     }
 
+    /// getStoreSize - Return the number of bytes overwritten by a store
+    /// of the specified value type.
+    unsigned getStoreSize() const {
+      return (getSizeInBits() + 7) / 8;
+    }
+
+    /// getStoreSizeInBits - Return the number of bits overwritten by a store
+    /// of the specified value type.
+    unsigned getStoreSizeInBits() const {
+      return getStoreSize() * 8;
+    }
+
     static MVT getFloatingPointVT(unsigned BitWidth) {
       switch (BitWidth) {
       default:
@@ -353,7 +369,11 @@ namespace llvm {
     }
   };
 
-  struct EVT { // EVT = Extended Value Type
+
+  /// EVT - Extended Value Type.  Capable of holding value types which are not
+  /// native for any processor (such as the i12345 type), as well as the types
+  /// a MVT can represent.
+  struct EVT {
   private:
     MVT V;
     const Type *LLVMTy;