Fix debug mode test failures on MIPS and PPC after f1aa5562.

TEST=cctest/test-gap-resolver/FuzzResolver,unittests/MoveOptimizerTest.RemovesRedundantExplicit
BUG=

Review URL: https://codereview.chromium.org/1403373016

Cr-Commit-Position: refs/heads/master@{#31629}

test/cctest/compiler/test-gap-resolver.cc

@@ -213,10 +213,15 @@ class ParallelMoveCreator : public HandleAndZoneScope {
         return AllocatedOperand(LocationOperand::REGISTER, RandomDoubleType(),
                                 index);
       case 4:
-        return ExplicitOperand(LocationOperand::REGISTER, RandomType(), 1);
+        return ExplicitOperand(
+            LocationOperand::REGISTER, RandomType(),
+            RegisterConfiguration::ArchDefault(RegisterConfiguration::TURBOFAN)
+                ->GetAllocatableGeneralCode(1));
       case 5:
-        return ExplicitOperand(LocationOperand::STACK_SLOT, RandomType(),
-                               index);
+        return ExplicitOperand(
+            LocationOperand::STACK_SLOT, RandomType(),
+            RegisterConfiguration::ArchDefault(RegisterConfiguration::TURBOFAN)
+                ->GetAllocatableGeneralCode(index));
       case 6:
         return ConstantOperand(index);
     }

test/unittests/compiler/move-optimizer-unittest.cc

@@ -104,11 +104,18 @@ TEST_F(MoveOptimizerTest, RemovesRedundant) {
 
 
 TEST_F(MoveOptimizerTest, RemovesRedundantExplicit) {
+  int first_reg_index =
+      RegisterConfiguration::ArchDefault(RegisterConfiguration::TURBOFAN)
+          ->GetAllocatableGeneralCode(0);
+  int second_reg_index =
+      RegisterConfiguration::ArchDefault(RegisterConfiguration::TURBOFAN)
+          ->GetAllocatableGeneralCode(1);
+
   StartBlock();
   auto first_instr = EmitNop();
-  AddMove(first_instr, Reg(0), ExplicitReg(1));
+  AddMove(first_instr, Reg(first_reg_index), ExplicitReg(second_reg_index));
   auto last_instr = EmitNop();
-  AddMove(last_instr, Reg(1), Reg(0));
+  AddMove(last_instr, Reg(second_reg_index), Reg(first_reg_index));
   EndBlock(Last());
 
   Optimize();
@@ -116,7 +123,7 @@ TEST_F(MoveOptimizerTest, RemovesRedundantExplicit) {
   CHECK_EQ(0, NonRedundantSize(first_instr->parallel_moves()[0]));
   auto move = last_instr->parallel_moves()[0];
   CHECK_EQ(1, NonRedundantSize(move));
-  CHECK(Contains(move, Reg(0), ExplicitReg(1)));
+  CHECK(Contains(move, Reg(first_reg_index), ExplicitReg(second_reg_index)));
 }