[Sparc] Use HWEncoding instead of unused Num field in Sparc register definitions. Also, correct the definitions of RETL and RET instructions.

llvm-svn: 188738

llvm/lib/Target/Sparc/SparcInstrInfo.td

@@ -286,11 +286,11 @@ let usesCustomInserter = 1, Uses = [FCC] in {
 // Section A.3 - Synthetic Instructions, p. 85
 // special cases of JMPL:
 let isReturn = 1, isTerminator = 1, hasDelaySlot = 1, isBarrier = 1 in {
-  let rd = O7.Num, rs1 = G0.Num in
+  let rd = 0, rs1 = 15 in
     def RETL: F3_2<2, 0b111000, (outs), (ins i32imm:$val),
                    "jmp %o7+$val", [(retflag simm13:$val)]>;
 
-  let rd = I7.Num, rs1 = G0.Num in
+  let rd = 0, rs1 = 31 in
     def RET: F3_2<2, 0b111000, (outs), (ins i32imm:$val),
                   "jmp %i7+$val", []>;
 }

llvm/lib/Target/Sparc/SparcRegisterInfo.td

@@ -11,8 +11,8 @@
 //  Declarations that describe the Sparc register file
 //===----------------------------------------------------------------------===//
 
-class SparcReg<string n> : Register<n> {
-  field bits<5> Num;
+class SparcReg<bits<16> Enc, string n> : Register<n> {
+  let HWEncoding = Enc;
   let Namespace = "SP";
 }
 
@@ -27,16 +27,13 @@ def sub_odd  : SubRegIndex<32, 32>;
 
 // Registers are identified with 5-bit ID numbers.
 // Ri - 32-bit integer registers
-class Ri<bits<5> num, string n> : SparcReg<n> {
-  let Num = num;
-}
+class Ri<bits<16> Enc, string n> : SparcReg<Enc, n>;
+
 // Rf - 32-bit floating-point registers
-class Rf<bits<5> num, string n> : SparcReg<n> {
-  let Num = num;
-}
+class Rf<bits<16> Enc, string n> : SparcReg<Enc, n>;
+
 // Rd - Slots in the FP register file for 64-bit floating-point values.
-class Rd<bits<5> num, string n, list<Register> subregs> : SparcReg<n> {
-  let Num = num;
+class Rd<bits<16> Enc, string n, list<Register> subregs> : SparcReg<Enc, n> {
   let SubRegs = subregs;
   let SubRegIndices = [sub_even, sub_odd];
   let CoveredBySubRegs = 1;