MIPS: Fix compilation error in debug mode due to unused variables

Change-Id: I3805bb04e2ae6b620d12b8b5e878fff0d27aa1f1
Reviewed-on: https://chromium-review.googlesource.com/1150027Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#54693}

src/mips/macro-assembler-mips.cc

@@ -3797,10 +3797,6 @@ void TurboAssembler::Jump(Handle<Code> code, RelocInfo::Mode rmode,
 void TurboAssembler::Call(Register target, int16_t offset, Condition cond,
                           Register rs, const Operand& rt, BranchDelaySlot bd) {
   DCHECK(is_int16(offset));
-#ifdef DEBUG
-  int size = IsPrevInstrCompactBranch() ? kInstrSize : 0;
-#endif
-
   BlockTrampolinePoolScope block_trampoline_pool(this);
   if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) {
     if (cond == cc_always) {
@@ -3831,10 +3827,6 @@ void TurboAssembler::Call(Register target, Register base, int16_t offset,
                           Condition cond, Register rs, const Operand& rt,
                           BranchDelaySlot bd) {
   DCHECK(is_uint16(offset));
-#ifdef DEBUG
-  int size = IsPrevInstrCompactBranch() ? kInstrSize : 0;
-#endif
-
   BlockTrampolinePoolScope block_trampoline_pool(this);
   if (IsMipsArchVariant(kMips32r6) && bd == PROTECT) {
     if (cond == cc_always) {

src/mips64/macro-assembler-mips64.cc

@@ -4221,10 +4221,6 @@ void TurboAssembler::Jump(Handle<Code> code, RelocInfo::Mode rmode,
 // Note: To call gcc-compiled C code on mips, you must call through t9.
 void TurboAssembler::Call(Register target, Condition cond, Register rs,
                           const Operand& rt, BranchDelaySlot bd) {
-#ifdef DEBUG
-  int size = IsPrevInstrCompactBranch() ? kInstrSize : 0;
-#endif
-
   BlockTrampolinePoolScope block_trampoline_pool(this);
   if (kArchVariant == kMips64r6 && bd == PROTECT) {
     if (cond == cc_always) {