1 files changed, 38 insertions, 1 deletions
diff --git a/lib/Target/Mips/MipsInstrFormats.td b/lib/Target/Mips/MipsInstrFormats.td
index 21a1862..4555303 100644
--- a/lib/Target/Mips/MipsInstrFormats.td
+++ b/lib/Target/Mips/MipsInstrFormats.td
@@ -1,4 +1,4 @@
-//===- MipsInstrFormats.td - Mips Instruction Formats ------*- tablegen -*-===//
+//===-- MipsInstrFormats.td - Mips Instruction Formats -----*- tablegen -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -290,3 +290,40 @@ class FFR2P<bits<6> funct, bits<5> fmt, string opstr,
   FFR<0x11, funct, fmt, (outs RC:$fd), (ins RC:$fs, RC:$ft),
       !strconcat(opstr, ".", fmtstr, "\t$fd, $fs, $ft"),
       [(set RC:$fd, (OpNode RC:$fs, RC:$ft))]>;
+
+// Floating point madd/msub/nmadd/nmsub.
+class FFMADDSUB<bits<3> funct, bits<3> fmt, dag outs, dag ins, string asmstr,
+                list<dag> pattern>
+  : MipsInst<outs, ins, asmstr, pattern, NoItinerary, FrmOther> {
+  bits<5> fd;
+  bits<5> fr;
+  bits<5> fs;
+  bits<5> ft;
+
+  let Opcode = 0x13;
+  let Inst{25-21} = fr;
+  let Inst{20-16} = ft;
+  let Inst{15-11} = fs;
+  let Inst{10-6} = fd;
+  let Inst{5-3} = funct;
+  let Inst{2-0} = fmt;
+}
+
+// FP indexed load/store instructions.
+class FFMemIdx<bits<6> funct, dag outs, dag ins, string asmstr,
+               list<dag> pattern> :
+  MipsInst<outs, ins, asmstr, pattern, NoItinerary, FrmOther>
+{
+  bits<5>  base;
+  bits<5>  index;
+  bits<5>  fs;
+  bits<5>  fd;
+
+  let Opcode = 0x13;
+
+  let Inst{25-21} = base;
+  let Inst{20-16} = index;
+  let Inst{15-11} = fs;
+  let Inst{10-6} = fd;
+  let Inst{5-0} = funct;
+}