[llvm] r200829 - Shrink the size of CodeGenInstruction a little bit by using bitfields. 32 bools seemed excessive.

[Craig Topper]

Author: ctopper
Date: Wed Feb  5 03:10:40 2014
New Revision: 200829

URL: http://llvm.org/viewvc/llvm-project?rev=200829&view=rev
Log:
Shrink the size of CodeGenInstruction a little bit by using bitfields. 32 bools seemed excessive.

Modified:
    llvm/trunk/utils/TableGen/CodeGenInstruction.cpp
    llvm/trunk/utils/TableGen/CodeGenInstruction.h

Modified: llvm/trunk/utils/TableGen/CodeGenInstruction.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/CodeGenInstruction.cpp?rev=200829&r1=200828&r2=200829&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/CodeGenInstruction.cpp (original)
+++ llvm/trunk/utils/TableGen/CodeGenInstruction.cpp Wed Feb  5 03:10:40 2014
@@ -315,10 +315,13 @@ CodeGenInstruction::CodeGenInstruction(R
   hasCtrlDep   = R->getValueAsBit("hasCtrlDep");
   isNotDuplicable = R->getValueAsBit("isNotDuplicable");
 
-  mayLoad      = R->getValueAsBitOrUnset("mayLoad", mayLoad_Unset);
-  mayStore     = R->getValueAsBitOrUnset("mayStore", mayStore_Unset);
-  hasSideEffects = R->getValueAsBitOrUnset("hasSideEffects",
-                                           hasSideEffects_Unset);
+  bool Unset;
+  mayLoad      = R->getValueAsBitOrUnset("mayLoad", Unset);
+  mayLoad_Unset = Unset;
+  mayStore     = R->getValueAsBitOrUnset("mayStore", Unset);
+  mayStore_Unset = Unset;
+  hasSideEffects = R->getValueAsBitOrUnset("hasSideEffects", Unset);
+  hasSideEffects_Unset = Unset;
   neverHasSideEffects = R->getValueAsBit("neverHasSideEffects");
 
   isAsCheapAsAMove = R->getValueAsBit("isAsCheapAsAMove");

Modified: llvm/trunk/utils/TableGen/CodeGenInstruction.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/CodeGenInstruction.h?rev=200829&r1=200828&r2=200829&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/CodeGenInstruction.h (original)
+++ llvm/trunk/utils/TableGen/CodeGenInstruction.h Wed Feb  5 03:10:40 2014
@@ -215,38 +215,38 @@ namespace llvm {
     std::vector<Record*> ImplicitDefs, ImplicitUses;
 
     // Various boolean values we track for the instruction.
-    bool isReturn;
-    bool isBranch;
-    bool isIndirectBranch;
-    bool isCompare;
-    bool isMoveImm;
-    bool isBitcast;
-    bool isSelect;
-    bool isBarrier;
-    bool isCall;
-    bool canFoldAsLoad;
-    bool mayLoad;
-    bool mayLoad_Unset;
-    bool mayStore;
-    bool mayStore_Unset;
-    bool isPredicable;
-    bool isConvertibleToThreeAddress;
-    bool isCommutable;
-    bool isTerminator;
-    bool isReMaterializable;
-    bool hasDelaySlot;
-    bool usesCustomInserter;
-    bool hasPostISelHook;
-    bool hasCtrlDep;
-    bool isNotDuplicable;
-    bool hasSideEffects;
-    bool hasSideEffects_Unset;
-    bool neverHasSideEffects;
-    bool isAsCheapAsAMove;
-    bool hasExtraSrcRegAllocReq;
-    bool hasExtraDefRegAllocReq;
-    bool isCodeGenOnly;
-    bool isPseudo;
+    bool isReturn : 1;
+    bool isBranch : 1;
+    bool isIndirectBranch : 1;
+    bool isCompare : 1;
+    bool isMoveImm : 1;
+    bool isBitcast : 1;
+    bool isSelect : 1;
+    bool isBarrier : 1;
+    bool isCall : 1;
+    bool canFoldAsLoad : 1;
+    bool mayLoad : 1;
+    bool mayLoad_Unset : 1;
+    bool mayStore : 1;
+    bool mayStore_Unset : 1;
+    bool isPredicable : 1;
+    bool isConvertibleToThreeAddress : 1;
+    bool isCommutable : 1;
+    bool isTerminator : 1;
+    bool isReMaterializable : 1;
+    bool hasDelaySlot : 1;
+    bool usesCustomInserter : 1;
+    bool hasPostISelHook : 1;
+    bool hasCtrlDep : 1;
+    bool isNotDuplicable : 1;
+    bool hasSideEffects : 1;
+    bool hasSideEffects_Unset : 1;
+    bool neverHasSideEffects : 1;
+    bool isAsCheapAsAMove : 1;
+    bool hasExtraSrcRegAllocReq : 1;
+    bool hasExtraDefRegAllocReq : 1;
+    bool isCodeGenOnly : 1;
+    bool isPseudo : 1;
 
     std::string DeprecatedReason;
     bool HasComplexDeprecationPredicate;