Support load function prototype 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 3b272d0b022e266d2cd447700b0dedcee1c94027..dede47013587984341f456394166eb787bf576cc 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1860,6 +1860,14 @@ LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoLoadFunctionPrototype(
+    HLoadFunctionPrototype* instr) {
+  return AssignEnvironment(DefineAsRegister(
+      new LLoadFunctionPrototype(UseRegister(instr->function()),
+                                 TempRegister())));
+}
+
+
 LInstruction* LChunkBuilder::DoLoadElements(HLoadElements* instr) {
   LOperand* input = UseRegisterAtStart(instr->value());
   return DefineSameAsFirst(new LLoadElements(input));