Fix uses of art::HCompare::IsGtBias on MIPS32 and MIPS64.

Do not call this method on non floating-point HCompare
instructions.

Change-Id: I262ab23f48d32295641063f897dca02cb92eb2e2
diff --git a/compiler/optimizing/code_generator_mips64.cc b/compiler/optimizing/code_generator_mips64.cc
index 119084e..e3a44f1 100644
--- a/compiler/optimizing/code_generator_mips64.cc
+++ b/compiler/optimizing/code_generator_mips64.cc
@@ -1727,7 +1727,6 @@
   LocationSummary* locations = instruction->GetLocations();
   GpuRegister res = locations->Out().AsRegister<GpuRegister>();
   Primitive::Type in_type = instruction->InputAt(0)->GetType();
-  bool gt_bias = instruction->IsGtBias();
 
   //  0 if: left == right
   //  1 if: left  > right
@@ -1769,7 +1768,7 @@
       __ CmpEqS(FTMP, lhs, rhs);
       __ LoadConst32(res, 0);
       __ Bc1nez(FTMP, &done);
-      if (gt_bias) {
+      if (instruction->IsGtBias()) {
         __ CmpLtS(FTMP, lhs, rhs);
         __ LoadConst32(res, -1);
         __ Bc1nez(FTMP, &done);
@@ -1791,7 +1790,7 @@
       __ CmpEqD(FTMP, lhs, rhs);
       __ LoadConst32(res, 0);
       __ Bc1nez(FTMP, &done);
-      if (gt_bias) {
+      if (instruction->IsGtBias()) {
         __ CmpLtD(FTMP, lhs, rhs);
         __ LoadConst32(res, -1);
         __ Bc1nez(FTMP, &done);
@@ -4258,4 +4257,3 @@
 
 }  // namespace mips64
 }  // namespace art
-