Support StringCharCodeAt in hydrogen/lithium.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index 82903108ecb479083c32a7a89d92df7b5a88c7cb..a91cdd53ab7e5b4333df869f361fc4958a6829e3 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1742,6 +1742,19 @@ LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) {
+  return AssignEnvironment(AssignPointerMap(DefineAsRegister(

[fschneider, 2011/01/14 12:06:11]

I'd rather split this into multiple statements to improve readability.

LOperand* object = UseRegister(instr->string());
LOperand* index = UseRegisterOrConstant(instr->index());
...

+      new LStringCharCodeAt(UseRegister(instr->string()),
+                            UseRegisterOrConstant(instr->index())))));
+}
+
+
+LInstruction* LChunkBuilder::DoStringLength(HStringLength* instr) {
+  return DefineAsRegister(

[fschneider, 2011/01/14 12:06:11]

I'd also split this into 2 statement here.

+      new LStringLength(UseRegisterAtStart(instr->value())));
+}
+
+
 LInstruction* LChunkBuilder::DoArrayLiteral(HArrayLiteral* instr) {
   return MarkAsCall(DefineFixed(new LArrayLiteral, eax), instr);
 }