MIPS[64]: Implement fill.df, copy_u.df, copy_s.df instructions in simulator

src/mips64/disasm-mips64.cc

Index: src/mips64/disasm-mips64.cc
diff --git a/src/mips64/disasm-mips64.cc b/src/mips64/disasm-mips64.cc
index 2ebd0ead13d14d409ef2261e8a5e732a60743a1a..bdd0856b610ac7d8461f1afce61989f600be4e8b 100644
--- a/src/mips64/disasm-mips64.cc
+++ b/src/mips64/disasm-mips64.cc
@@ -60,17 +60,6 @@ class Decoder {
   int InstructionDecode(byte* instruction);
 
  private:
-  const uint32_t kMsaI8Mask = ((3U << 24) | ((1 << 6) - 1));
-  const uint32_t kMsaI5Mask = ((7U << 23) | ((1 << 6) - 1));
-  const uint32_t kMsaMI10Mask = (15U << 2);
-  const uint32_t kMsaBITMask = ((7U << 23) | ((1 << 6) - 1));
-  const uint32_t kMsaELMMask = (15U << 22);
-  const uint32_t kMsa3RMask = ((7U << 23) | ((1 << 6) - 1));
-  const uint32_t kMsa3RFMask = ((15U << 22) | ((1 << 6) - 1));
-  const uint32_t kMsaVECMask = (23U << 21);
-  const uint32_t kMsa2RMask = (7U << 18);
-  const uint32_t kMsa2RFMask = (15U << 17);
-
   // Bottleneck functions to print into the out_buffer.
   void PrintChar(const char ch);
   void Print(const char* str);