[llvm-branch-commits] [llvm] [AArch64][PAC] Eliminate excessive MOVs when computing blend (PR #115185)

[Anatoly Trosinenko via llvm-branch-commits]

================
@@ -163,8 +163,15 @@ class AArch64AsmPrinter : public AsmPrinter {
   // Emit the sequence for AUT or AUTPAC.
   void emitPtrauthAuthResign(const MachineInstr *MI);
 
-  // Emit the sequence to compute a discriminator into x17, or reuse AddrDisc.
-  unsigned emitPtrauthDiscriminator(uint16_t Disc, unsigned AddrDisc);
+  // Emit the sequence to compute the discriminator.
+  // ScratchReg should be x16/x17.
----------------
atrosinenko wrote:

Sounds reasonable. Added, thank you!

https://github.com/llvm/llvm-project/pull/115185