[PowerPC] Switch to by-name matching for instructions (part 1 of 2).

This is a follow-on to https://reviews.llvm.org/D134073.

After https://reviews.llvm.org/D137653 we can now switch the PPC
target away from positional operand matching.

This patch fixes all of the "easy" cases. While this changes a large
number of lines of tablegen source, it results in only a single
non-comment change in the code generated by tablegen: the (unused)
codegen-only "MTVRSAVEv" instruction was previously incorrectly
encoding operand 0, and now encodes (correctly) operand 1.

Changes which result in generated-code changes have been split off
into the next (smaller) patch, for ease of review.

Reviewed By: barannikov88

Differential Revision: https://reviews.llvm.org/D137661

llvm/lib/Target/PowerPC/PPCInstrFuture.td

@@ -53,36 +53,36 @@ let Predicates = [IsISAFuture] in {
 
 let Predicates = [HasVSX, IsISAFuture] in {
   let mayLoad = 1 in {
-    def LXVRL : XX1Form_memOp<31, 525, (outs vsrc:$XT), (ins memr:$src, g8rc:$rB),
-                              "lxvrl $XT, $src, $rB", IIC_LdStLoad, []>;
+    def LXVRL : XX1Form_memOp<31, 525, (outs vsrc:$XT), (ins memr:$RA, g8rc:$RB),
+                              "lxvrl $XT, $RA, $RB", IIC_LdStLoad, []>;
 
-    def LXVRLL : XX1Form_memOp<31, 557, (outs vsrc:$XT), (ins memr:$src, g8rc:$rB),
-                               "lxvrll $XT, $src, $rB", IIC_LdStLoad, []>;
+    def LXVRLL : XX1Form_memOp<31, 557, (outs vsrc:$XT), (ins memr:$RA, g8rc:$RB),
+                               "lxvrll $XT, $RA, $RB", IIC_LdStLoad, []>;
 
     def LXVPRL : XForm_XTp5_XAB5<31, 589, (outs vsrprc:$XTp),
-                                 (ins memr:$src, g8rc:$rB),
-                                 "lxvprl $XTp, $src, $rB", IIC_LdStLFD, []>;
+                                 (ins memr:$RA, g8rc:$RB),
+                                 "lxvprl $XTp, $RA, $RB", IIC_LdStLFD, []>;
 
     def LXVPRLL : XForm_XTp5_XAB5<31, 621, (outs vsrprc:$XTp),
-                                  (ins memr:$src, g8rc:$rB),
-                                  "lxvprll $XTp, $src, $rB", IIC_LdStLFD, []>;
+                                  (ins memr:$RA, g8rc:$RB),
+                                  "lxvprll $XTp, $RA, $RB", IIC_LdStLFD, []>;
   }
 
   let mayStore = 1 in {
     def STXVRL : XX1Form_memOp<31, 653, (outs),
-                               (ins vsrc:$XT, memr:$dst, g8rc:$rB),
-                               "stxvrl $XT, $dst, $rB", IIC_LdStLoad, []>;
+                               (ins vsrc:$XT, memr:$RA, g8rc:$RB),
+                               "stxvrl $XT, $RA, $RB", IIC_LdStLoad, []>;
 
     def STXVRLL : XX1Form_memOp<31, 685, (outs),
-                                (ins vsrc:$XT, memr:$dst, g8rc:$rB),
-                                "stxvrll $XT, $dst, $rB", IIC_LdStLoad, []>;
+                                (ins vsrc:$XT, memr:$RA, g8rc:$RB),
+                                "stxvrll $XT, $RA, $RB", IIC_LdStLoad, []>;
 
     def STXVPRL : XForm_XTp5_XAB5<31, 717, (outs),
-                                  (ins vsrprc:$XTp, memr:$src, g8rc:$rB),
-                                  "stxvprl $XTp, $src, $rB", IIC_LdStLFD, []>;
+                                  (ins vsrprc:$XTp, memr:$RA, g8rc:$RB),
+                                  "stxvprl $XTp, $RA, $RB", IIC_LdStLFD, []>;
 
     def STXVPRLL : XForm_XTp5_XAB5<31, 749, (outs),
-                                   (ins vsrprc:$XTp, memr:$src, g8rc:$rB),
-                                   "stxvprll $XTp, $src, $rB", IIC_LdStLFD, []>;
+                                   (ins vsrprc:$XTp, memr:$RA, g8rc:$RB),
+                                   "stxvprll $XTp, $RA, $RB", IIC_LdStLFD, []>;
   }
 }

llvm/lib/Target/PowerPC/PPCInstrHTM.td

@@ -35,50 +35,50 @@ def TEND : XForm_htm1 <31, 686,
                        (outs), (ins u1imm:$A), "tend. $A", IIC_SprMTSPR>;
 
 def TABORT : XForm_base_r3xo <31, 910,
-                              (outs), (ins gprc:$A), "tabort. $A", IIC_SprMTSPR,
+                              (outs), (ins gprc:$RA), "tabort. $RA", IIC_SprMTSPR,
                               []>, isRecordForm {
   let RST = 0;
-  let B = 0;
+  let RB = 0;
 }
 
 def TABORTWC : XForm_base_r3xo <31, 782,
-                                (outs), (ins u5imm:$RTS, gprc:$A, gprc:$B),
-                                "tabortwc. $RTS, $A, $B", IIC_SprMTSPR, []>,
+                                (outs), (ins u5imm:$RST, gprc:$RA, gprc:$RB),
+                                "tabortwc. $RST, $RA, $RB", IIC_SprMTSPR, []>,
                                 isRecordForm;
 
 def TABORTWCI : XForm_base_r3xo <31, 846,
-                                 (outs), (ins u5imm:$RTS, gprc:$A, u5imm:$B),
-                                 "tabortwci. $RTS, $A, $B", IIC_SprMTSPR, []>,
+                                 (outs), (ins u5imm:$RST, gprc:$RA, u5imm:$RB),
+                                 "tabortwci. $RST, $RA, $RB", IIC_SprMTSPR, []>,
                                  isRecordForm;
 
 def TABORTDC : XForm_base_r3xo <31, 814,
-                                (outs), (ins u5imm:$RTS, gprc:$A, gprc:$B),
-                                "tabortdc. $RTS, $A, $B", IIC_SprMTSPR, []>,
+                                (outs), (ins u5imm:$RST, gprc:$RA, gprc:$RB),
+                                "tabortdc. $RST, $RA, $RB", IIC_SprMTSPR, []>,
                                 isRecordForm;
 
 def TABORTDCI : XForm_base_r3xo <31, 878,
-                                 (outs), (ins u5imm:$RTS, gprc:$A, u5imm:$B),
-                                 "tabortdci. $RTS, $A, $B", IIC_SprMTSPR, []>,
+                                 (outs), (ins u5imm:$RST, gprc:$RA, u5imm:$RB),
+                                 "tabortdci. $RST, $RA, $RB", IIC_SprMTSPR, []>,
                                  isRecordForm;
 
 def TSR : XForm_htm2 <31, 750,
                       (outs), (ins u1imm:$L), "tsr. $L", IIC_SprMTSPR>,
                       isRecordForm;
 
 def TRECLAIM : XForm_base_r3xo <31, 942,
-                                (outs), (ins gprc:$A), "treclaim. $A",
+                                (outs), (ins gprc:$RA), "treclaim. $RA",
                                 IIC_SprMTSPR, []>,
                                 isRecordForm {
   let RST = 0;
-  let B = 0;
+  let RB = 0;
 }
 
 def TRECHKPT : XForm_base_r3xo <31, 1006,
                                 (outs), (ins), "trechkpt.", IIC_SprMTSPR, []>,
                                 isRecordForm {
   let RST = 0;
-  let A = 0;
-  let B = 0;
+  let RA = 0;
+  let RB = 0;
 }
 
 }