[mips] Add Octeon cnMips instructions mtmX and mtpX

Adds the Octeon cnMips instructions "load multiplier register MPLx" and "load product register Px".
Includes tests.

Reviews by: Daniel.Sanders@imgtec.com

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205343 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/Target/Mips/MipsInstrFormats.td b/lib/Target/Mips/MipsInstrFormats.td
index 09fcd5ee8f..5b690ac3b7 100644
--- a/lib/Target/Mips/MipsInstrFormats.td
+++ b/lib/Target/Mips/MipsInstrFormats.td
@@ -489,6 +489,17 @@ class WAIT_FM : StdArch {
   let Inst{5-0}   = 0x20;
 }
 
+class MTMR_FM<bits<6> funct> : StdArch {
+  bits<5> rs;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0x1c;
+  let Inst{25-21} = rs;
+  let Inst{20-6}  = 0;
+  let Inst{5-0}   = funct;
+}
+
 class POP_FM<bits<6> funct> : StdArch {
   bits<5> rd;
   bits<5> rs;