Partial ia32 implementation of optimized try/catch (by Kevin Millikin)

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index 83a6c6f32b042df99551db1a616fb64bdc8fd203..5cdd6d01687ec3fa71ab27c76c94bdddaad77fe2 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -73,11 +73,11 @@ class LCodeGen;
   V(ClampIToUint8)                              \
   V(ClampTToUint8)                              \
   V(ClassOfTestAndBranch)                       \
+  V(CmpConstantEqAndBranch)                     \
   V(CmpIDAndBranch)                             \
-  V(CmpObjectEqAndBranch)                       \
   V(CmpMapAndBranch)                            \
+  V(CmpObjectEqAndBranch)                       \
   V(CmpT)                                       \
-  V(CmpConstantEqAndBranch)                     \
   V(ConstantD)                                  \
   V(ConstantI)                                  \
   V(ConstantT)                                  \
@@ -88,6 +88,7 @@ class LCodeGen;
   V(DivI)                                       \
   V(DoubleToI)                                  \
   V(ElementsKind)                               \
+  V(EnterTry)                                   \
   V(FastLiteral)                                \
   V(FixedArrayBaseLength)                       \
   V(FunctionLiteral)                            \
@@ -107,20 +108,21 @@ class LCodeGen;
   V(IsConstructCallAndBranch)                   \
   V(IsNilAndBranch)                             \
   V(IsObjectAndBranch)                          \
-  V(IsStringAndBranch)                          \
   V(IsSmiAndBranch)                             \
+  V(IsStringAndBranch)                          \
   V(IsUndetectableAndBranch)                    \
   V(JSArrayLength)                              \
   V(Label)                                      \
   V(LazyBailout)                                \
+  V(LeaveTry)                                   \
   V(LoadContextSlot)                            \
   V(LoadElements)                               \
   V(LoadExternalArrayPointer)                   \
   V(LoadFunctionPrototype)                      \
   V(LoadGlobalCell)                             \
   V(LoadGlobalGeneric)                          \
-  V(LoadKeyedFastElement)                       \
   V(LoadKeyedFastDoubleElement)                 \
+  V(LoadKeyedFastElement)                       \
   V(LoadKeyedGeneric)                           \
   V(LoadKeyedSpecializedArrayElement)           \
   V(LoadNamedField)                             \
@@ -411,6 +413,21 @@ class LLabel: public LGap {
 };
 
 
+class LEnterTry: public LTemplateInstruction<0, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(EnterTry, "enter-try")
+  DECLARE_HYDROGEN_ACCESSOR(EnterTry);
+
+  int index() { return hydrogen()->index(); }
+};
+
+
+class LLeaveTry: public LTemplateInstruction<0, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(LeaveTry, "leave-try")
+};
+
+
 class LParameter: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(Parameter, "parameter")