Revert "Revert "[NVPTX] Emit prmt selection value in hex" (#115204)"

This reverts commit 375d192.

Author: justinfargnoli

llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXInstPrinter.cpp

@@ -373,6 +373,12 @@ void NVPTXInstPrinter::printOffseti32imm(const MCInst *MI, int OpNum,
   }
 }
 
+void NVPTXInstPrinter::printHexu32imm(const MCInst *MI, int OpNum,
+                                      raw_ostream &O, const char *Modifier) {
+  int64_t Imm = MI->getOperand(OpNum).getImm();
+  O << formatHex(Imm) << "U";
+}
+
 void NVPTXInstPrinter::printProtoIdent(const MCInst *MI, int OpNum,
                                        raw_ostream &O, const char *Modifier) {
   const MCOperand &Op = MI->getOperand(OpNum);

llvm/lib/Target/NVPTX/NVPTXInstrInfo.td

@@ -1740,6 +1740,10 @@ multiclass BFI<string Instr, ValueType T, RegisterClass RC, Operand ImmCls> {
                 [(set (T RC:$f), (bfi (T imm:$a), (T RC:$b), (i32 imm:$c), (i32 imm:$d)))]>;
 }
 
+def Hexu32imm : Operand<i32> {
+  let PrintMethod = "printHexu32imm";
+}
+
 multiclass PRMT<ValueType T, RegisterClass RC> {
   def rrr
     : NVPTXInst<(outs RC:$d),
@@ -1748,12 +1752,12 @@ multiclass PRMT<ValueType T, RegisterClass RC> {
                 [(set (T RC:$d), (prmt (T RC:$a), (T RC:$b), (i32 Int32Regs:$c), imm:$mode))]>;
   def rri
     : NVPTXInst<(outs RC:$d),
-                (ins RC:$a, Int32Regs:$b, i32imm:$c, PrmtMode:$mode),
+                (ins RC:$a, Int32Regs:$b, Hexu32imm:$c, PrmtMode:$mode),
                 !strconcat("prmt.b32${mode}", " \t$d, $a, $b, $c;"),
                 [(set (T RC:$d), (prmt (T RC:$a), (T RC:$b), (i32 imm:$c), imm:$mode))]>;
   def rii
     : NVPTXInst<(outs RC:$d),
-                (ins RC:$a, i32imm:$b, i32imm:$c, PrmtMode:$mode),
+                (ins RC:$a, i32imm:$b, Hexu32imm:$c, PrmtMode:$mode),
                 !strconcat("prmt.b32${mode}", " \t$d, $a, $b, $c;"),
                 [(set (T RC:$d), (prmt (T RC:$a), (T imm:$b), (i32 imm:$c), imm:$mode))]>;
 }