From: Craig Topper <craig.topper@gmail.com>
Date: Sun, 11 Mar 2012 01:57:56 +0000 (+0000)
Subject: Shrink and reorder some fields in MCOperandInfo to fit it in 8 bytes to reduce size... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=39bdc5526f9bb4985c5ea7711e603bb44707ed42;p=oota-llvm.git

Shrink and reorder some fields in MCOperandInfo to fit it in 8 bytes to reduce size of static tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152524 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/MC/MCInstrDesc.h b/include/llvm/MC/MCInstrDesc.h
index 35bdd69243e..186612d904d 100644
--- a/include/llvm/MC/MCInstrDesc.h
+++ b/include/llvm/MC/MCInstrDesc.h
@@ -58,17 +58,17 @@ public:
   /// if the operand is a register.  If isLookupPtrRegClass is set, then this is
   /// an index that is passed to TargetRegisterInfo::getPointerRegClass(x) to
   /// get a dynamic register class.
-  short RegClass;
+  int16_t RegClass;
 
   /// Flags - These are flags from the MCOI::OperandFlags enum.
-  unsigned short Flags;
+  uint8_t Flags;
+
+  /// OperandType - Information about the type of the operand.
+  uint8_t OperandType;
 
   /// Lower 16 bits are used to specify which constraints are set. The higher 16
   /// bits are used to specify the value of constraints (4 bits each).
-  unsigned Constraints;
-
-  /// OperandType - Information about the type of the operand.
-  MCOI::OperandType OperandType;
+  uint32_t Constraints;
   /// Currently no other information.
 
   /// isLookupPtrRegClass - Set if this operand is a pointer value and it
diff --git a/utils/TableGen/InstrInfoEmitter.cpp b/utils/TableGen/InstrInfoEmitter.cpp
index fc949f2388a..43ff20373d1 100644
--- a/utils/TableGen/InstrInfoEmitter.cpp
+++ b/utils/TableGen/InstrInfoEmitter.cpp
@@ -107,6 +107,11 @@ InstrInfoEmitter::GetOperandInfo(const CodeGenInstruction &Inst) {
       if (Inst.Operands[i].Rec->isSubClassOf("OptionalDefOperand"))
         Res += "|(1<<MCOI::OptionalDef)";
 
+      // Fill in operand type.
+      Res += ", MCOI::";
+      assert(!Inst.Operands[i].OperandType.empty() && "Invalid operand type.");
+      Res += Inst.Operands[i].OperandType;
+
       // Fill in constraint info.
       Res += ", ";
 
@@ -122,11 +127,6 @@ InstrInfoEmitter::GetOperandInfo(const CodeGenInstruction &Inst) {
                     " << 16) | (1 << MCOI::TIED_TO))";
       }
 
-      // Fill in operand type.
-      Res += ", MCOI::";
-      assert(!Inst.Operands[i].OperandType.empty() && "Invalid operand type.");
-      Res += Inst.Operands[i].OperandType;
-
       Result.push_back(Res);
     }
   }