MIPS: Implement inlining of constructor calls.

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 6f7922526fe4521c4cc228d61a4565e70ac36eb7..c40cd81b893c58de1f3a32a4acfac740abd81eca 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -5363,15 +5363,19 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   // A monomorphic miss (i.e, here the cache is not uninitialized) goes
   // megamorphic.
   __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
-  __ Branch(&done, eq, a3, Operand(at));
+
+  __ Branch(USE_DELAY_SLOT, &done, eq, a3, Operand(at));
+  // An uninitialized cache is patched with the function.
+  // Store a1 in the delay slot. This may or may not get overwritten depending
+  // on the result of the comparison.
+  __ sw(a1, FieldMemOperand(a2, JSGlobalPropertyCell::kValueOffset));
+
   // MegamorphicSentinel is an immortal immovable object (undefined) so no
   // write-barrier is needed.
   __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
   __ sw(at, FieldMemOperand(a2, JSGlobalPropertyCell::kValueOffset));
   __ Branch(&done);

[Michael Starzinger, 2012/02/29 09:48:21]

Removed this obsolete branch before landing.

 
-  // An uninitialized cache is patched with the function.
-  __ sw(a1, FieldMemOperand(a2, JSGlobalPropertyCell::kValueOffset));
   // No need for a write barrier here - cells are rescanned.
 
   __ bind(&done);