[AMDGPU] gfx1010 v_interp_* instructions

[kzhuravl]

LGTM

llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td

 
 class VINTRP_Pseudo <string opName, dag outs, dag ins, list<dag> pattern> :
   VINTRPCommon <outs, ins, "", pattern>,
   SIMCInstr<opName, SIEncodingFamily.NONE> {
   let isPseudo = 1;
   let isCodeGenOnly = 1;
 }
 
+// FIXME-GFX10: WIP.
 class VINTRP_Real_si <bits <2> op, string opName, dag outs, dag ins,
-                      string asm> :
+                      string asm, int encodingFamily> :
   VINTRPCommon <outs, ins, asm, []>,
   VINTRPe <op>,
-  SIMCInstr<opName, SIEncodingFamily.SI> {
-  let AssemblerPredicate = SIAssemblerPredicate;
-  let DecoderNamespace = "GFX6GFX7";
+  SIMCInstr<opName, encodingFamily> {
   let DisableDecoder = DisableSIDecoder;
 }
 
 class VINTRP_Real_vi <bits <2> op, string opName, dag outs, dag ins,
                       string asm> :
   VINTRPCommon <outs, ins, asm, []>,
   VINTRPe_vi <op>,
   SIMCInstr<opName, SIEncodingFamily.VI> {
   let AssemblerPredicate = VIAssemblerPredicate;
   let DecoderNamespace = "GFX8";
   let DisableDecoder = DisableVIDecoder;
 }
 
+// FIXME-GFX10: WIP.
 multiclass VINTRP_m <bits <2> op, dag outs, dag ins, string asm,
                      list<dag> pattern = []> {
   def "" : VINTRP_Pseudo <NAME, outs, ins, pattern>;
 
-  def _si : VINTRP_Real_si <op, NAME, outs, ins, asm>;
+  let AssemblerPredicate = isGFX6GFX7, DecoderNamespace = "GFX6GFX7" in {
+    def _si : VINTRP_Real_si <op, NAME, outs, ins, asm, SIEncodingFamily.SI>;
+  } // End AssemblerPredicate = isGFX6GFX7, DecoderNamespace = "GFX6GFX7"
 
   def _vi : VINTRP_Real_vi <op, NAME, outs, ins, asm>;
-}
 
+  let AssemblerPredicate = isGFX10Plus, DecoderNamespace = "GFX10" in {
+    def _gfx10 : VINTRP_Real_si<op, NAME, outs, ins, asm, SIEncodingFamily.GFX10>;
+  } // End AssemblerPredicate = isGFX10Plus, DecoderNamespace = "GFX10"
+}
 //===----------------------------------------------------------------------===//
 // Vector instruction mappings
 //===----------------------------------------------------------------------===//
 
 // Maps an opcode in e32 form to its e64 equivalent
 def getVOPe64 : InstrMapping {
   let FilterClass = "VOP";
   let RowFields = ["OpName"];