[turbofan] Run everything after representation selection concurrently.

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 7b7e67bfecd1b5f2883b39ba7d167b9abdb5b572..02222c607d8e3bfb68c229e298630012fb7b9bb3 100644
--- a/src/mips/builtins-mips.cc
+++ b/src/mips/builtins-mips.cc
@@ -2736,6 +2736,44 @@ void Builtins::Generate_Construct(MacroAssembler* masm) {
           RelocInfo::CODE_TARGET);
 }
 
+// static
+void Builtins::Generate_AllocateInNewSpace(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- a0 : requested object size (tagged)
+  //  -- cp : context
+  // -----------------------------------
+  __ AssertSmi(a0);
+
+  Label runtime;
+  __ SmiUntag(a0);
+  __ Allocate(a0, v0, a1, a2, &runtime, NO_ALLOCATION_FLAGS);
+  __ Ret();
+
+  __ bind(&runtime);
+  __ SmiTag(a0);
+  __ Push(a0);
+  __ TailCallRuntime(Runtime::kAllocateInNewSpace);
+}
+
+// static
+void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- a0 : requested object size (tagged)
+  //  -- cp : context
+  // -----------------------------------
+  __ AssertSmi(a0);
+
+  Label runtime;
+  __ SmiUntag(a0);
+  __ Allocate(a0, v0, a1, a2, &runtime, PRETENURE);
+  __ Ret();
+
+  __ bind(&runtime);
+  __ SmiTag(a0);
+  __ Push(a0);
+  __ Push(Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
+  __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
+}
 
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   // State setup as expected by MacroAssembler::InvokePrologue.