[clang] [llvm] [AArch64][llvm] Add support for Permission Overlays Extension 2 (FEAT_S1POE2) (PR #164912)

[Jonathan Thackray via cfe-commits]

================
@@ -13338,3 +13353,86 @@ class STCPHInst<string asm> : I<
     let Inst{7-5}   = 0b100;
     let Inst{4-0}   = 0b11111;
 }
+
+//---
+// Permission Overlays Extension 2 (FEAT_S1POE2)
+//---
+
+class TCHANGERegInst<string asm, bit isB> : I<
+    (outs GPR64:$Xd),
+    (ins GPR64:$Xn, TIndexhint_op:$nb),
+    asm, "\t$Xd, $Xn, $nb", "", []>, Sched<[]> {
+  bits<5> Xd;
+  bits<5> Xn;
+  bits<1> nb;
+  let Inst{31-19} = 0b1101010110000;
+  let Inst{18}    = isB;
+  let Inst{17}    = nb;
+  let Inst{16-10} = 0b0000000;
+  let Inst{9-5}   = Xn;
+  let Inst{4-0}   = Xd;
+}
+
+class TCHANGEImmInst<string asm, bit isB> : I<
+    (outs GPR64:$Xd),
+    (ins imm0_127:$imm, TIndexhint_op:$nb),
+    asm, "\t$Xd, $imm, $nb", "", []>, Sched<[]> {
+  bits<5> Xd;
+  bits<7> imm;
+  bits<1> nb;
+  let Inst{31-19} = 0b1101010110010;
+  let Inst{18}    = isB;
+  let Inst{17}    = nb;
+  let Inst{16-12} = 0b00000;
+  let Inst{11-5}  = imm;
+  let Inst{4-0}   = Xd;
+}
+
+class TENTERInst<string asm> : I<
+    (outs),
+    (ins imm0_127:$imm, TIndexhint_op:$nb),
+    asm, "\t$imm, $nb", "", []>, Sched<[]> {
+  bits<7> imm;
+  bits<1> nb;
+  let Inst{31-20} = 0b110101001110;
+  let Inst{19-18} = 0b00;
----------------
jthackray wrote:

Thanks, done.

https://github.com/llvm/llvm-project/pull/164912
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