MIPS: Change inlined cache of intanceof stub to use indirection through cell.

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 56930699e5d8628db22b23cf1f9ff41bb7998865..6e99959660d00c36d53fd0164d281f802fdcded2 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -4731,6 +4731,34 @@ void MacroAssembler::PatchRelocatedValue(Register li_location,
   FlushICache(li_location, 2);
 }
 
+void MacroAssembler::GetRelocatedValue(Register li_location,
+                                       Register value,
+                                       Register scratch) {
+  lw(value, MemOperand(li_location));
+  if (emit_debug_code()) {
+    And(value, value, kOpcodeMask);
+    Check(eq, "The instruction to patch should be a lui.",

[Vyacheslav Egorov (Chromium), 2012/01/20 11:50:41]

check message does not match function actions (I know that it does not match on
ARM as well).

[kalmard, 2012/01/20 12:13:32]

Done.

+        value, Operand(LUI));
+    lw(value, MemOperand(li_location));
+  }
+
+  // value now holds a lui instruction. Extract the immediate.
+  sll(value, value, kImm16Bits);
+
+  lw(scratch, MemOperand(li_location, kInstrSize));
+  if (emit_debug_code()) {
+    And(scratch, scratch, kOpcodeMask);
+    Check(eq, "The instruction to patch should be an ori.",

[Vyacheslav Egorov (Chromium), 2012/01/20 11:50:41]

check message does not match function actions (I know that it does not match on
ARM).

[kalmard, 2012/01/20 12:13:32]

Done.

+        scratch, Operand(ORI));
+    lw(scratch, MemOperand(li_location, kInstrSize));
+  }
+  // "scratch" now holds an ori instruction. Extract the immediscratche.

[Vyacheslav Egorov (Chromium), 2012/01/20 11:50:41]

immediscratche ?

[kalmard, 2012/01/20 12:13:32]

A search and replace attempt gone horribly wrong.
Done.

+  andi(scratch, scratch, kImm16Mask);
+
+  // Merge the results.
+  or_(value, value, scratch);
+}
+
 
 void MacroAssembler::CheckPageFlag(
     Register object,