[clang] [llvm] [LLVM][MC][AArch64] Assembler support for Armv9.6-A memory systems extensions (PR #112341)

[via cfe-commits]

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@@ -4020,6 +4079,33 @@ defm STNPD : StorePairNoAlloc<0b01, 1, FPR64Op, simm7s8, "stnp">;
 defm STNPQ : StorePairNoAlloc<0b10, 1, FPR128Op, simm7s16, "stnp">;
 }
 
+// Armv9.6-a Load/store no-allocate pair (FEAT_LSUI)
+let Predicates = [HasLSUI] in {
+  defm LDTP    : LoadPairOffset<0b11, 0, GPR64z, simm7s8, "ldtp">;
+  def LDTPpre  : LoadPairPreIdx<0b11, 0, GPR64z, simm7s8, "ldtp">;
+  def LDTPpost : LoadPairPostIdx<0b11, 0, GPR64z, simm7s8, "ldtp">;
+
+  defm STTNPX : StorePairNoAllocLSUI<0b11, 0, GPR64z, simm7s8, "sttnp">;
+  defm LDTNPX : LoadPairNoAllocLSUI<0b11, 0, GPR64z, simm7s8, "ldtnp">;
+
+  defm STTP    : StorePairOffset<0b11, 0, GPR64z, simm7s8, "sttp">;
+  def STTPpre  : StorePairPreIdx<0b11, 0, GPR64z, simm7s8, "sttp">;
+  def STTPpost : StorePairPostIdx<0b11, 0, GPR64z, simm7s8, "sttp">;
+}
+
+let Predicates = [HasLSUI, HasFPARMv8] in {
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CarolineConcatto wrote:

I am not sure if this should be HasSIMD128 instead of HasFPARMv8.
Why it is using HasFPARMv8?

https://github.com/llvm/llvm-project/pull/112341