[mips][mips64r6] Add sel.s and sel.d

Summary:
Also use named constants for common opcode fields.

Depends on D3669

Reviewers: jkolek, vmedic, zoran.jovanovic

Differential Revision: http://reviews.llvm.org/D3670

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208582 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 37 insertions, 2 deletions

diff --git a/lib/Target/Mips/Mips32r6InstrFormats.td b/lib/Target/Mips/Mips32r6InstrFormats.td
index 241cde2a825..4471870fa31 100644
--- a/lib/Target/Mips/Mips32r6InstrFormats.td
+++ b/lib/Target/Mips/Mips32r6InstrFormats.td
@@ -17,6 +17,42 @@ class MipsR6Inst : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther>,
   let EncodingPredicates = [HasStdEnc];
 }
 
+//===----------------------------------------------------------------------===//
+//
+// Field Values
+//
+//===----------------------------------------------------------------------===//
+
+def OPGROUP_COP1 { bits<6> Value = 0b010001; }
+def OPGROUP_SPECIAL { bits<6> Value = 0b000000; }
+
+class FIELD_FMT<bits<5> Val> {
+  bits<5> Value = Val;
+}
+def FIELD_FMT_S : FIELD_FMT<0b10000>;
+def FIELD_FMT_D : FIELD_FMT<0b10001>;
+
+//===----------------------------------------------------------------------===//
+//
+// Encoding Formats
+//
+//===----------------------------------------------------------------------===//
+
+class COP1_SEL_FM<FIELD_FMT Format> : MipsR6Inst {
+  bits<5> ft;
+  bits<5> fs;
+  bits<5> fd;
+
+  bits<32> Inst;
+
+  let Inst{31-26} = OPGROUP_COP1.Value;
+  let Inst{25-21} = Format.Value;
+  let Inst{20-16} = ft;
+  let Inst{15-11} = fs;
+  let Inst{10-6} = fd;
+  let Inst{5-0} = 0b010000;
+}
+
 class SPECIAL_3R_FM<bits<5> mulop, bits<6> funct> : MipsR6Inst {
   bits<5> rd;
   bits<5> rs;
@@ -24,11 +60,10 @@ class SPECIAL_3R_FM<bits<5> mulop, bits<6> funct> : MipsR6Inst {
 
   bits<32> Inst;
 
-  let Inst{31-26} = 0b00000;
+  let Inst{31-26} = OPGROUP_SPECIAL.Value;
   let Inst{25-21} = rs;
   let Inst{20-16} = rt;
   let Inst{15-11} = rd;
   let Inst{10-6}  = mulop;
   let Inst{5-0}   = funct;
 }
-