MIPS: Remove peeophole optimizations from assembler.

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index 1a49148b8892cb75e5150d8a94f38668f8cb63dd..a1673934384cdfcce63f8882dc00a74f5364a3d2 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -816,12 +816,6 @@ class Assembler : public AssemblerBase {
 
   PositionsRecorder* positions_recorder() { return &positions_recorder_; }
 
-  bool can_peephole_optimize(int instructions) {
-    if (!allow_peephole_optimization_) return false;
-    if (last_bound_pos_ > pc_offset() - instructions * kInstrSize) return false;
-    return reloc_info_writer.last_pc() <= pc_ - instructions * kInstrSize;
-  }
-
   // Postpone the generation of the trampoline pool for the specified number of
   // instructions.
   void BlockTrampolinePoolFor(int instructions);
@@ -1126,7 +1120,6 @@ class Assembler : public AssemblerBase {
   friend class BlockTrampolinePoolScope;
 
   PositionsRecorder positions_recorder_;
-  bool allow_peephole_optimization_;
   bool emit_debug_code_;
   friend class PositionsRecorder;
   friend class EnsureSpace;