Cleanup of branch code generation (no change in functionality).

runtime/vm/flow_graph_compiler_mips.cc

Index: runtime/vm/flow_graph_compiler_mips.cc
===================================================================
--- runtime/vm/flow_graph_compiler_mips.cc	(revision 30039)
+++ runtime/vm/flow_graph_compiler_mips.cc	(working copy)
@@ -1666,82 +1666,6 @@
 }
 
 
-void FlowGraphCompiler::EmitDoubleCompareBranch(Condition true_condition,
-                                                FpuRegister left,
-                                                FpuRegister right,
-                                                BranchInstr* branch) {
-  ASSERT(branch != NULL);
-  __ Comment("DoubleCompareBranch");
-  assembler()->cund(left, right);
-  BlockEntryInstr* nan_result = (true_condition == NE) ?
-      branch->true_successor() : branch->false_successor();
-  assembler()->bc1t(GetJumpLabel(nan_result));
-
-  switch (true_condition) {
-    case EQ: assembler()->ceqd(left, right); break;
-    case NE: assembler()->ceqd(left, right); break;
-    case LT: assembler()->coltd(left, right); break;
-    case LE: assembler()->coled(left, right); break;
-    case GT: assembler()->coltd(right, left); break;
-    case GE: assembler()->coled(right, left); break;
-    default: {
-      // Should only passing the above conditions to this function.
-      UNREACHABLE();
-      break;
-    }
-  }
-
-  assembler()->LoadImmediate(TMP, 1);
-  if (true_condition == NE) {
-    assembler()->movf(CMPRES1, ZR);
-    assembler()->movt(CMPRES1, TMP);
-  } else {
-    assembler()->movf(CMPRES1, TMP);
-    assembler()->movt(CMPRES1, ZR);
-  }
-  assembler()->mov(CMPRES2, ZR);
-
-  // EmitBranchOnCondition expects ordering to be described by CMPRES1, CMPRES2.
-  branch->EmitBranchOnCondition(this, EQ);
-}
-
-
-void FlowGraphCompiler::EmitDoubleCompareBool(Condition true_condition,
-                                              FpuRegister left,
-                                              FpuRegister right,
-                                              Register result) {
-  Label done, is_true;
-  Label* nan_label = (true_condition == NE) ? &is_true : &done;
-  __ Comment("DoubleCompareBool");
-  assembler()->LoadObject(result, Bool::False());
-  assembler()->cund(left, right);
-  assembler()->bc1t(nan_label);
-
-  switch (true_condition) {
-    case EQ: assembler()->ceqd(left, right); break;
-    case NE: assembler()->ceqd(left, right); break;
-    case LT: assembler()->coltd(left, right); break;
-    case LE: assembler()->coled(left, right); break;
-    case GT: assembler()->coltd(right, left); break;
-    case GE: assembler()->coled(right, left); break;
-    default: {
-      // Should only passing the above conditions to this function.
-      UNREACHABLE();
-      break;
-    }
-  }
-
-  if (true_condition == NE) {
-    assembler()->bc1t(&done);  // False is already in result.
-  } else {
-    assembler()->bc1f(&done);
-  }
-  assembler()->Bind(&is_true);
-  assembler()->LoadObject(result, Bool::True());
-  assembler()->Bind(&done);
-}
-
-
 FieldAddress FlowGraphCompiler::ElementAddressForIntIndex(intptr_t cid,
                                                           intptr_t index_scale,
                                                           Register array,