[llvm-commits] CVS: llvm/include/llvm/CodeGen/LiveVariables.h

[Evan Cheng]

Changes in directory llvm/include/llvm/CodeGen:

LiveVariables.h updated: 1.39 -> 1.40
---
Log message:

Data structure change to improve compile time (especially in debug mode).

---
Diffs of the changes:  (+10 -14)

 LiveVariables.h |   24 ++++++++++--------------
 1 files changed, 10 insertions(+), 14 deletions(-)


Index: llvm/include/llvm/CodeGen/LiveVariables.h
diff -u llvm/include/llvm/CodeGen/LiveVariables.h:1.39 llvm/include/llvm/CodeGen/LiveVariables.h:1.40
--- llvm/include/llvm/CodeGen/LiveVariables.h:1.39	Wed Apr 25 02:30:23 2007
+++ llvm/include/llvm/CodeGen/LiveVariables.h	Wed Apr 25 14:34:00 2007
@@ -31,12 +31,12 @@
 
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/ADT/BitVector.h"
+#include "llvm/ADT/SmallVector.h"
 #include <map>
 
 namespace llvm {
 
 class MRegisterInfo;
-class BitVector;
 
 class LiveVariables : public MachineFunctionPass {
 public:
@@ -127,28 +127,24 @@
   // PhysRegInfo - Keep track of which instruction was the last def/use of a
   // physical register. This is a purely local property, because all physical
   // register references as presumed dead across basic blocks.
-  std::vector<MachineInstr*> PhysRegInfo;
+  MachineInstr **PhysRegInfo;
 
   // PhysRegUsed - Keep track whether the physical register has been used after
   // its last definition. This is local property.
-  BitVector                  PhysRegUsed;
-
-  // PhysRegPartDef - Keep track of a list of instructions which "partially"
-  // defined the physical register (e.g. on X86 AX partially defines EAX).
-  // These are turned into use/mod/write if there is a use of the register
-  // later in the same block. This is local property.
-  std::vector<std::vector<MachineInstr*> > PhysRegPartDef;
+  bool          *PhysRegUsed;
 
   // PhysRegPartUse - Keep track of which instruction was the last partial use
   // of a physical register (e.g. on X86 a def of EAX followed by a use of AX).
   // This is a purely local property.
-  std::vector<MachineInstr*> PhysRegPartUse;
+  MachineInstr **PhysRegPartUse;
 
-  typedef std::map<const MachineBasicBlock*,
-                   std::vector<unsigned> > PHIVarInfoMap;
-
-  PHIVarInfoMap PHIVarInfo;
+  // PhysRegPartDef - Keep track of a list of instructions which "partially"
+  // defined the physical register (e.g. on X86 AX partially defines EAX).
+  // These are turned into use/mod/write if there is a use of the register
+  // later in the same block. This is local property.
+  SmallVector<MachineInstr*, 4> *PhysRegPartDef;
 
+  SmallVector<unsigned, 4> *PHIVarInfo;
 
   /// addRegisterKilled - We have determined MI kills a register. Look for the
   /// operand that uses it and mark it as IsKill.