[mips][msa] Fix issue with immediate fields of LD/ST instructions

not being correctly encoded/decoded.
In more detail, immediate fields of LD/ST instructions should be
divided/multiplied by the size of the data format before encoding and
after decoding, respectively.

llvm-svn: 196494

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/MipsCodeEmitter.cpp b/llvm/lib/Target/Mips/MipsCodeEmitter.cpp
index ca4163d4e58..76f604d6603 100644
--- a/llvm/lib/Target/Mips/MipsCodeEmitter.cpp
+++ b/llvm/lib/Target/Mips/MipsCodeEmitter.cpp
@@ -112,6 +112,7 @@ private:
   unsigned getBranchTargetOpValue(const MachineInstr &MI, unsigned OpNo) const;
   unsigned getMemEncoding(const MachineInstr &MI, unsigned OpNo) const;
   unsigned getMemEncodingMMImm12(const MachineInstr &MI, unsigned OpNo) const;
+  unsigned getMSAMemEncoding(const MachineInstr &MI, unsigned OpNo) const;
   unsigned getSizeExtEncoding(const MachineInstr &MI, unsigned OpNo) const;
   unsigned getSizeInsEncoding(const MachineInstr &MI, unsigned OpNo) const;
   unsigned getLSAImmEncoding(const MachineInstr &MI, unsigned OpNo) const;
@@ -224,6 +225,12 @@ unsigned MipsCodeEmitter::getMemEncodingMMImm12(const MachineInstr &MI,
   return 0;
 }
 
+unsigned MipsCodeEmitter::getMSAMemEncoding(const MachineInstr &MI,
+                                            unsigned OpNo) const {
+  llvm_unreachable("Unimplemented function.");
+  return 0;
+}
+
 unsigned MipsCodeEmitter::getSizeExtEncoding(const MachineInstr &MI,
                                              unsigned OpNo) const {
   // size is encoded as size-1.