MIPS: Re-land Crankshaft-generated KeyedLoad stubs.

src/mips/builtins-mips.cc

Index: src/mips/builtins-mips.cc
diff --git a/src/mips/builtins-mips.cc b/src/mips/builtins-mips.cc
index 2ed6c5386c558d10d23cce2a5d577fea5becc7f5..c7b0c3f09ddd40507cacfa5fa8e7ff1ec4fac62b 100644
--- a/src/mips/builtins-mips.cc
+++ b/src/mips/builtins-mips.cc
@@ -1297,6 +1297,26 @@ CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR)
 #undef DEFINE_CODE_AGE_BUILTIN_GENERATOR
 
 
+void Builtins::Generate_NotifyICMiss(MacroAssembler* masm) {
+  {
+    FrameScope scope(masm, StackFrame::INTERNAL);
+
+    // Preserve registers across notification, this is important for compiled
+    // stubs that tail call the runtime on deopts passing their parameters in
+    // registers.
+    __ MultiPush(kJSCallerSaved | kCalleeSaved);
+    // Pass the function and deoptimization type to the runtime system.
+    __ CallRuntime(Runtime::kNotifyICMiss, 0);
+    __ MultiPop(kJSCallerSaved | kCalleeSaved);
+  }
+
+  __ mov(at, ra);  // Stash the miss continuation
+  __ Addu(sp, sp, Operand(kPointerSize));  // Ignore state
+  __ pop(ra);  // Restore RA to continuation in JSFunction
+  __ Jump(at);  // Jump to miss handler
+}
+
+
 static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
                                              Deoptimizer::BailoutType type) {
   {