Use std::fill instead of memset to initialize an array to avoid hardcoded count and...

[oota-llvm.git] / include / llvm / Target / TargetLowering.h

diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index cb5a5796e9833806bce7b64c0aac394bb4fbe3f0..e99c9f758f8ea662d0ae554aa60572bdd923b6f5 100644 (file)
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -97,7 +97,8 @@ public:
     TypeLegal,           // The target natively supports this type.
     TypePromoteInteger,  // Replace this integer with a larger one.
     TypeExpandInteger,   // Split this integer into two of half the size.
-    TypeSoftenFloat,     // Convert this float to a same size integer type.
+    TypeSoftenFloat,     // Convert this float to a same size integer type,
+                         // if an operation is not supported in target HW.
     TypeExpandFloat,     // Split this float into two of half the size.
     TypeScalarizeVector, // Replace this one-element vector with its element.
     TypeSplitVector,     // Split this vector into two of half the size.
@@ -130,10 +131,12 @@ public:
   /// support for these atomic instructions, and also have different options
   /// w.r.t. what they should expand to.
   enum class AtomicExpansionKind {
-    None,      // Don't expand the instruction.
-    LLSC,      // Expand the instruction into loadlinked/storeconditional; used
-               // by ARM/AArch64.
-    CmpXChg,   // Expand the instruction into cmpxchg; used by at least X86.
+    None,    // Don't expand the instruction.
+    LLSC,    // Expand the instruction into loadlinked/storeconditional; used
+             // by ARM/AArch64.
+    LLOnly,  // Expand the (load) instruction into just a load-linked, which has
+             // greater atomic guarantees than a normal load.
+    CmpXChg, // Expand the instruction into cmpxchg; used by at least X86.
   };
 
   static ISD::NodeType getExtendForContent(BooleanContent Content) {
@@ -1290,7 +1293,7 @@ protected:
 
   /// Remove all register classes.
   void clearRegisterClasses() {
-    memset(RegClassForVT, 0,MVT::LAST_VALUETYPE * sizeof(TargetRegisterClass*));
+    std::fill(std::begin(RegClassForVT), std::end(RegClassForVT), nullptr);
 
     AvailableRegClasses.clear();
   }
@@ -1911,6 +1914,7 @@ private:
   /// up the MVT::LAST_VALUETYPE value to the next multiple of 8.
   uint32_t CondCodeActions[ISD::SETCC_INVALID][(MVT::LAST_VALUETYPE + 7) / 8];
 
+protected:
   ValueTypeActionImpl ValueTypeActions;
 
 private: