diff --git a/ChangeLog b/ChangeLog
index f60eca1..b84a09a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Tue May 26 13:23:56 2009  Minero Aoki  <aamine@loveruby.net>
+
+	* net/loveruby/cflat/asm: refactoring: rename class: AsmStatistics
+	  -> Statistics.
+
+	* net/loveruby/cflat/sysdep/x86/CodeGenerator.java: follow it.
+
 Tue May 26 13:18:52 2009  Minero Aoki  <aamine@loveruby.net>
 
 	* net/loveruby/cflat/asm: refactoring: rename class: AsmOperand ->
diff --git a/net/loveruby/cflat/asm/AbsoluteAddress.java b/net/loveruby/cflat/asm/AbsoluteAddress.java
index 18dbcc6..08a67ef 100644
--- a/net/loveruby/cflat/asm/AbsoluteAddress.java
+++ b/net/loveruby/cflat/asm/AbsoluteAddress.java
@@ -11,7 +11,7 @@ public class AbsoluteAddress extends Operand {
         return this.register;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         register.collectStatistics(stats);
     }
 
diff --git a/net/loveruby/cflat/asm/Assembly.java b/net/loveruby/cflat/asm/Assembly.java
index 1f0d5dd..1d8c639 100644
--- a/net/loveruby/cflat/asm/Assembly.java
+++ b/net/loveruby/cflat/asm/Assembly.java
@@ -19,7 +19,7 @@ abstract public class Assembly {
         return false;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         // does nothing by default.
     }
 
diff --git a/net/loveruby/cflat/asm/BaseSymbol.java b/net/loveruby/cflat/asm/BaseSymbol.java
index 8b11c2f..00ff0f9 100644
--- a/net/loveruby/cflat/asm/BaseSymbol.java
+++ b/net/loveruby/cflat/asm/BaseSymbol.java
@@ -5,7 +5,7 @@ abstract public class BaseSymbol implements Symbol {
         return false;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         stats.symbolUsed(this);
     }
 
diff --git a/net/loveruby/cflat/asm/DirectMemoryReference.java b/net/loveruby/cflat/asm/DirectMemoryReference.java
index 6f9dfd6..c581808 100644
--- a/net/loveruby/cflat/asm/DirectMemoryReference.java
+++ b/net/loveruby/cflat/asm/DirectMemoryReference.java
@@ -11,7 +11,7 @@ public class DirectMemoryReference extends MemoryReference {
         return this.value;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         value.collectStatistics(stats);
     }
 
diff --git a/net/loveruby/cflat/asm/ImmediateValue.java b/net/loveruby/cflat/asm/ImmediateValue.java
index 12b167a..8e479a9 100644
--- a/net/loveruby/cflat/asm/ImmediateValue.java
+++ b/net/loveruby/cflat/asm/ImmediateValue.java
@@ -21,7 +21,7 @@ public class ImmediateValue extends Operand {
         return this.expr;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         // does nothing
     }
 
diff --git a/net/loveruby/cflat/asm/IndirectMemoryReference.java b/net/loveruby/cflat/asm/IndirectMemoryReference.java
index b90ff1d..94aa05f 100644
--- a/net/loveruby/cflat/asm/IndirectMemoryReference.java
+++ b/net/loveruby/cflat/asm/IndirectMemoryReference.java
@@ -39,7 +39,7 @@ public class IndirectMemoryReference extends MemoryReference {
         return base;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         base.collectStatistics(stats);
     }
 
diff --git a/net/loveruby/cflat/asm/Instruction.java b/net/loveruby/cflat/asm/Instruction.java
index 7df7901..708ea1b 100644
--- a/net/loveruby/cflat/asm/Instruction.java
+++ b/net/loveruby/cflat/asm/Instruction.java
@@ -80,7 +80,7 @@ public class Instruction extends Assembly {
         return (Symbol)ref.value();
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         stats.instructionUsed(mnemonic);
         for (int i = 0; i < operands.length; i++) {
             operands[i].collectStatistics(stats);
diff --git a/net/loveruby/cflat/asm/IntegerLiteral.java b/net/loveruby/cflat/asm/IntegerLiteral.java
index 374db11..40f545b 100644
--- a/net/loveruby/cflat/asm/IntegerLiteral.java
+++ b/net/loveruby/cflat/asm/IntegerLiteral.java
@@ -40,7 +40,7 @@ public class IntegerLiteral implements Literal {
         return toSource();
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         // does nothing
     }
 
diff --git a/net/loveruby/cflat/asm/Literal.java b/net/loveruby/cflat/asm/Literal.java
index ce1d29d..318bd90 100644
--- a/net/loveruby/cflat/asm/Literal.java
+++ b/net/loveruby/cflat/asm/Literal.java
@@ -3,7 +3,7 @@ package net.loveruby.cflat.asm;
 public interface Literal extends Comparable<Literal> {
     public String toSource();
     public String toSource(SymbolTable table);
-    public void collectStatistics(AsmStatistics stats);
+    public void collectStatistics(Statistics stats);
     public boolean isZero();
     public Literal plus(long diff);
     public int cmp(IntegerLiteral i);
diff --git a/net/loveruby/cflat/asm/Operand.java b/net/loveruby/cflat/asm/Operand.java
index 9ad2a77..a2441ca 100644
--- a/net/loveruby/cflat/asm/Operand.java
+++ b/net/loveruby/cflat/asm/Operand.java
@@ -15,7 +15,7 @@ abstract public class Operand implements OperandPattern {
         return null;
     }
 
-    abstract public void collectStatistics(AsmStatistics stats);
+    abstract public void collectStatistics(Statistics stats);
 
     // default implementation
     public boolean match(Operand operand) {
diff --git a/net/loveruby/cflat/asm/Register.java b/net/loveruby/cflat/asm/Register.java
index ec8e1e9..54b784f 100644
--- a/net/loveruby/cflat/asm/Register.java
+++ b/net/loveruby/cflat/asm/Register.java
@@ -5,7 +5,7 @@ abstract public class Register extends Operand {
         return true;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         stats.registerUsed(this);
     }
 
diff --git a/net/loveruby/cflat/asm/AsmStatistics.java b/net/loveruby/cflat/asm/Statistics.java
similarity index 90%
rename from net/loveruby/cflat/asm/AsmStatistics.java
rename to net/loveruby/cflat/asm/Statistics.java
index 0c6e562..b30017a 100644
--- a/net/loveruby/cflat/asm/AsmStatistics.java
+++ b/net/loveruby/cflat/asm/Statistics.java
@@ -1,20 +1,20 @@
 package net.loveruby.cflat.asm;
 import java.util.*;
 
-public class AsmStatistics {
+public class Statistics {
     protected Map<Register, Integer> registerUsage;
     protected Map<String, Integer> insnUsage;
     protected Map<Symbol, Integer> symbolUsage;
 
-    static public AsmStatistics collect(List<Assembly> assemblies) {
-        AsmStatistics stats = new AsmStatistics();
+    static public Statistics collect(List<Assembly> assemblies) {
+        Statistics stats = new Statistics();
         for (Assembly asm : assemblies) {
             asm.collectStatistics(stats);
         }
         return stats;
     }
 
-    public AsmStatistics() {
+    public Statistics() {
         registerUsage = new HashMap<Register, Integer>();
         insnUsage = new HashMap<String, Integer>();
         symbolUsage = new HashMap<Symbol, Integer>();
diff --git a/net/loveruby/cflat/asm/SuffixedSymbol.java b/net/loveruby/cflat/asm/SuffixedSymbol.java
index 438deb9..0205edb 100644
--- a/net/loveruby/cflat/asm/SuffixedSymbol.java
+++ b/net/loveruby/cflat/asm/SuffixedSymbol.java
@@ -13,7 +13,7 @@ public class SuffixedSymbol implements Symbol {
         return false;
     }
 
-    public void collectStatistics(AsmStatistics stats) {
+    public void collectStatistics(Statistics stats) {
         base.collectStatistics(stats);
     }
 
diff --git a/net/loveruby/cflat/sysdep/x86/CodeGenerator.java b/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
index 6d944ea..2b8a0ca 100644
--- a/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
+++ b/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
@@ -384,7 +384,7 @@ public class CodeGenerator
             AssemblyFile file, DefinedFunction func) {
         AssemblyFile body = compileStmts(func);
         List<Assembly> bodyAsms = optimize(body.assemblies());
-        AsmStatistics stats = AsmStatistics.collect(bodyAsms);
+        Statistics stats = Statistics.collect(bodyAsms);
         bodyAsms = reduceLabels(bodyAsms, stats);
         List<Register> saveRegs = usedCalleeSavedRegistersWithoutBP(stats);
         long saveRegsBytes = stackSizeFromWordNum(saveRegs.size());
@@ -476,7 +476,8 @@ public class CodeGenerator
     // #@@}
 
     // #@@range/reduceLabels{
-    private List<Assembly> reduceLabels(List<Assembly> assemblies, AsmStatistics stats) {
+    private List<Assembly> reduceLabels(
+            List<Assembly> assemblies, Statistics stats) {
         List<Assembly> result = new ArrayList<Assembly>();
         for (Assembly asm : assemblies) {
             if (asm.isLabel() && ! stats.doesSymbolUsed((Label)asm)) {
@@ -490,7 +491,7 @@ public class CodeGenerator
     }
     // #@@}
 
-    private List<Register> usedCalleeSavedRegistersWithoutBP(AsmStatistics stats) {
+    private List<Register> usedCalleeSavedRegistersWithoutBP(Statistics stats) {
         List<Register> result = new ArrayList<Register>();
         for (Register reg : calleeSavedRegisters()) {
             if (stats.doesRegisterUsed(reg) && !reg.equals(bp())) {