Initial support for quick compiler on MIPS64r6.

Change-Id: I6f43027b84e4a98ea320cddb972d9cf39bf7c4f8
diff --git a/dex2oat/dex2oat.cc b/dex2oat/dex2oat.cc
index 8572f4d..96919dc 100644
--- a/dex2oat/dex2oat.cc
+++ b/dex2oat/dex2oat.cc
@@ -873,14 +873,11 @@
         // For R6, only interpreter mode is working.
         // TODO: fix compiler for Mips32r6.
         compiler_filter_string = "interpret-only";
-      } else if (instruction_set_ == kMips64) {
-        // For Mips64, can only compile in interpreter mode.
-        // TODO: fix compiler for Mips64.
-        compiler_filter_string = "interpret-only";
       } else {
         compiler_filter_string = "speed";
       }
     }
+
     CHECK(compiler_filter_string != nullptr);
     CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter;
     if (strcmp(compiler_filter_string, "verify-none") == 0) {