Remove duplicate members from some LIR instruction by using the HIR accessors...

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
===================================================================
--- src/arm/lithium-codegen-arm.cc	(revision 6255)
+++ src/arm/lithium-codegen-arm.cc	(working copy)
@@ -1636,36 +1636,19 @@
 void LCodeGen::DoLoadKeyedFastElement(LLoadKeyedFastElement* instr) {
   Register elements = ToRegister(instr->elements());
   Register key = EmitLoadRegister(instr->key(), scratch0());
-  Register result;
+  Register result = ToRegister(instr->result());
   Register scratch = scratch0();
+  ASSERT(result.is(elements));
 
-  if (instr->load_result() != NULL) {
-    result = ToRegister(instr->load_result());
-  } else {
-    result = ToRegister(instr->result());
-    ASSERT(result.is(elements));
-  }
-
   // Load the result.
   __ add(scratch, elements, Operand(key, LSL, kPointerSizeLog2));
   __ ldr(result, FieldMemOperand(scratch, FixedArray::kHeaderSize));
 
-  Representation r = instr->hydrogen()->representation();
-  if (r.IsInteger32()) {
-    // Untag and check for smi.
-    __ SmiUntag(result);
-    DeoptimizeIf(cs, instr->environment());
-  } else if (r.IsDouble()) {
-    EmitNumberUntagD(result,
-                     ToDoubleRegister(instr->result()),
-                     instr->environment());
-  } else {
-    // Check for the hole value.
-    ASSERT(r.IsTagged());
-    __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex);
-    __ cmp(result, scratch);
-    DeoptimizeIf(eq, instr->environment());
-  }
+  // Check for the hole value.
+  ASSERT(r.IsTagged());
+  __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex);
+  __ cmp(result, scratch);
+  DeoptimizeIf(eq, instr->environment());
 }