[intrinsics] Nuke %HasCachedArrayIndex and %GetCachedArrayIndex.

src/crankshaft/x64/lithium-codegen-x64.cc

Index: src/crankshaft/x64/lithium-codegen-x64.cc
diff --git a/src/crankshaft/x64/lithium-codegen-x64.cc b/src/crankshaft/x64/lithium-codegen-x64.cc
index f5cab6bd5ca30212a9e68edc075769f52481481c..6ff918fd54b2b13b757df9db56e5249ef35db991 100644
--- a/src/crankshaft/x64/lithium-codegen-x64.cc
+++ b/src/crankshaft/x64/lithium-codegen-x64.cc
@@ -2332,29 +2332,6 @@ void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) {
   EmitBranch(instr, BranchCondition(instr->hydrogen()));
 }
 
-
-void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) {
-  Register input = ToRegister(instr->value());
-  Register result = ToRegister(instr->result());
-
-  __ AssertString(input);
-
-  __ movl(result, FieldOperand(input, String::kHashFieldOffset));
-  DCHECK(String::kHashShift >= kSmiTagSize);
-  __ IndexFromHash(result, result);
-}
-
-
-void LCodeGen::DoHasCachedArrayIndexAndBranch(
-    LHasCachedArrayIndexAndBranch* instr) {
-  Register input = ToRegister(instr->value());
-
-  __ testl(FieldOperand(input, String::kHashFieldOffset),
-           Immediate(String::kContainsCachedArrayIndexMask));
-  EmitBranch(instr, equal);
-}
-
-
 // Branches to a label or falls through with the answer in the z flag.
 // Trashes the temp register.
 void LCodeGen::EmitClassOfTest(Label* is_true,