Allow HPushArgument to handle more than one argument.

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index e78dde13977d0ab5df91207e957f8b4dffa3e5e3..562c88d34d23b6c12840494c159461319a2e0949 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1008,9 +1008,13 @@ LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoPushArgument(HPushArgument* instr) {
-  LOperand* argument = Use(instr->argument());
-  return new(zone()) LPushArgument(argument);
+LInstruction* LChunkBuilder::DoPushArguments(HPushArguments* instr) {
+  int argc = instr->OperandCount();
+  for (int i = 0; i < argc; ++i) {
+    LOperand* argument = Use(instr->argument(i));
+    AddInstruction(new(zone()) LPushArgument(argument), instr);
+  }
+  return NULL;
 }