[mips] Add more Octeon cnMips instructions

Adds the instructions ext/ext32/cins/cins32.
It also changes pop/dpop to accept the two operand version and
adds a simple pattern to generate baddu.
Tests for the two operand versions (including baddu/dmul/dpop/pop)
and the code generation pattern for baddu are included.

Reviewed by: Daniel.Sanders@imgtec.com

llvm-svn: 205449

1 files changed, 16 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/MipsInstrFormats.td b/llvm/lib/Target/Mips/MipsInstrFormats.td
index 5b690ac3b7e..38fac886048 100644
--- a/llvm/lib/Target/Mips/MipsInstrFormats.td
+++ b/llvm/lib/Target/Mips/MipsInstrFormats.td
@@ -489,6 +489,22 @@ class WAIT_FM : StdArch {
   let Inst{5-0}   = 0x20;
 }
 
+class EXTS_FM<bits<6> funct> : StdArch {
+  bits<5> rt;
+  bits<5> rs;
+  bits<5> pos;
+  bits<5> lenm1;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = 0x1c;
+  let Inst{25-21} = rs;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = lenm1;
+  let Inst{10-6}  = pos;
+  let Inst{5-0}   = funct;
+}
+
 class MTMR_FM<bits<6> funct> : StdArch {
   bits<5> rs;