MIPS64: Fix BlockTrampolinePoolFor() to emit trampoline before blocking, if needed.

test/cctest/test-assembler-mips64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3064 matching lines @@
   Label labels[kNumCases];
 
   __ daddiu(sp, sp, -8);
   __ sd(ra, MemOperand(sp));
   if ((assm.pc_offset() & 7) == 0) {
     __ nop();
   }
 
   Label done;
   {
+    __ BlockTrampolinePoolFor(kNumCases * 2 + 7);
     PredictableCodeSizeScope predictable(
         &assm, (kNumCases * 2 + 7) * Assembler::kInstrSize);
     Label here;
 
     __ bal(&here);
     __ nop();
     __ bind(&here);
     __ dsll(at, a0, 3);
     __ daddu(at, at, ra);
     __ ld(at, MemOperand(at, 5 * Assembler::kInstrSize));
@@ skipping 60 matching lines @@
     __ ori(v0, v0, values[i] & 0xffff);
     __ b(&done);
     __ nop();
   }
 
   if ((assm.pc_offset() & 7) == 0) {
     __ nop();
   }
   __ bind(&dispatch);
   {
+    __ BlockTrampolinePoolFor(kNumCases * 2 + 7);
     PredictableCodeSizeScope predictable(
         &assm, (kNumCases * 2 + 7) * Assembler::kInstrSize);
     Label here;
 
     __ bal(&here);
     __ nop();
     __ bind(&here);
     __ dsll(at, a0, 3);
     __ daddu(at, at, ra);
     __ ld(at, MemOperand(at, 5 * Assembler::kInstrSize));
@@ skipping 62 matching lines @@
     __ b(&done);
     __ nop();
   }
 
   __ stop("chk");
   if ((assm.pc_offset() & 7) == 0) {
     __ nop();
   }
   __ bind(&dispatch);
   {
+    __ BlockTrampolinePoolFor(kNumCases * 2 + 7);
     PredictableCodeSizeScope predictable(
         &assm, (kNumCases * 2 + 7) * Assembler::kInstrSize);
     Label here;
 
     __ bal(&here);
     __ nop();
     __ bind(&here);
     __ dsll(at, a0, 3);
     __ daddu(at, at, ra);
     __ ld(at, MemOperand(at, 5 * Assembler::kInstrSize));
@@ skipping 2100 matching lines @@
     size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseBalc);
     for (size_t i = 0; i < nr_test_cases; ++i) {
       int64_t res = run_balc(tc[i].offset);
       CHECK_EQ(tc[i].expected_res, res);
     }
   }
 }
 
 
 #undef __