[intrinsics] Nuke %HasCachedArrayIndex and %GetCachedArrayIndex.

src/crankshaft/mips/lithium-codegen-mips.cc

Index: src/crankshaft/mips/lithium-codegen-mips.cc
diff --git a/src/crankshaft/mips/lithium-codegen-mips.cc b/src/crankshaft/mips/lithium-codegen-mips.cc
index 0ac1c8a313e6e61f3ac4554f111fb6ed81d60982..16e15c8f28cac87d192ad5b244746b15ed110fce 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.cc
+++ b/src/crankshaft/mips/lithium-codegen-mips.cc
@@ -2280,30 +2280,6 @@ void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) {
              Operand(TestType(instr->hydrogen())));
 }
 
-
-void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) {
-  Register input = ToRegister(instr->value());
-  Register result = ToRegister(instr->result());
-
-  __ AssertString(input);
-
-  __ lw(result, FieldMemOperand(input, String::kHashFieldOffset));
-  __ IndexFromHash(result, result);
-}
-
-
-void LCodeGen::DoHasCachedArrayIndexAndBranch(
-    LHasCachedArrayIndexAndBranch* instr) {
-  Register input = ToRegister(instr->value());
-  Register scratch = scratch0();
-
-  __ lw(scratch,
-         FieldMemOperand(input, String::kHashFieldOffset));
-  __ And(at, scratch, Operand(String::kContainsCachedArrayIndexMask));
-  EmitBranch(instr, eq, at, Operand(zero_reg));
-}
-
-
 // Branches to a label or falls through with the answer in flags.  Trashes
 // the temp registers, but not the input.
 void LCodeGen::EmitClassOfTest(Label* is_true,