[llvm] [clang] [AArch64] Add quadword gather load/scatter store intrinsics with unscaled vector offset (PR #71290)

[via cfe-commits]

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@@ -420,6 +452,38 @@ let TargetGuard = "sve,bf16" in {
   def SVSTNT1_VNUM_BF : MInst<"svstnt1_vnum[_{d}]", "vPpld", "b", [IsStore], MemEltTyDefault, "aarch64_sve_stnt1">;
 }
 
+let TargetGuard = "sve2p1" in {
+  // Contiguous truncating store from quadword (single vector).
+  def SVST1UWQ      : MInst<"svst1uwq[_{d}]", "vPcd", "iUif",  [IsStore], MemEltTyInt32, "aarch64_sve_st1uwq">;
+  def SVST1UWQ_VNUM : MInst<"svst1uwq_vnum[_{d}]", "vPcld", "iUif", [IsStore], MemEltTyInt32, "aarch64_sve_st1uwq">;
+
+  def SVST1UDQ      : MInst<"svst1udq[_{d}]", "vPcd", "lUld",  [IsStore], MemEltTyInt64, "aarch64_sve_st1udq">;
+  def SVST1UDQ_VNUM : MInst<"svst1udq_vnum[_{d}]", "vPcld", "lUld", [IsStore], MemEltTyInt64, "aarch64_sve_st1udq">;
+
+  // Store one vector (vector base + scalar offset)
+  def SVST1Q_SCATTER_U64BASE_OFFSET : MInst<"svst1q_scatter[_{2}base]_offset[_{d}]",  "vPgld", "cUcsUsiUilUlfhdb", [IsScatterStore, IsByteIndexed], MemEltTyDefault, "aarch64_sve_st1q_scatter_scalar_offset">;
+  def SVST1Q_SCATTER_U64BASE : MInst<"svst1q_scatter[_{2}base][_{d}]",  "vPgd", "cUcsUsiUilUlfhdb", [IsScatterStore, IsByteIndexed], MemEltTyDefault, "aarch64_sve_st1q_scatter_scalar_offset">;
+
+  // Store one vector (scalar base + vector offset)
+  def SVST1Q_SCATTER_U64OFFSET : MInst<"svst1q_scatter_[{3}]offset[_{0}]", "vPpgd", "cUcsUsiUilUlfhdb", [IsScatterStore, IsByteIndexed], MemEltTyDefault, "aarch64_sve_st1q_scatter_vector_offset">;
+
+  // Store N vectors into N-element structure (scalar base)
+  defm SVST2Q : StructStore<"svst2q[_{d}]", "vPc2", "aarch64_sve_st2q">;
+  defm SVST3Q : StructStore<"svst3q[_{d}]", "vPc3", "aarch64_sve_st3q">;
+  defm SVST4Q : StructStore<"svst4q[_{d}]", "vPc4", "aarch64_sve_st4q">;
+
+  // Store N vectors into N-element structure (scalar base, VL displacement)
+  defm SVST2Q_VNUM : StructStore<"svst2q_vnum[_{d}]", "vPcl2", "aarch64_sve_st2q">;
+  defm SVST3Q_VNUM : StructStore<"svst3q_vnum[_{d}]", "vPcl3", "aarch64_sve_st3q">;
+  defm SVST4Q_VNUM : StructStore<"svst4q_vnum[_{d}]", "vPcl4", "aarch64_sve_st4q">;
+
+  // Scatter store quadwords (scalar base + vector index)
+  def SVST1Q_SCATTER_INDICES_U : MInst<"svst1q_scatter_[{3}]index[_{0}]",    "vPpgd", "sUsiUilUlbhfd", [IsScatterStore], MemEltTyDefault, "aarch64_sve_st1q_scatter_index">;
----------------
CarolineConcatto wrote:

s/svst1q_scatter_[{3}]offset[_{0}]/svst1q_scatter_[{3}]offset[_{d}]/
you could also write:
svst1q_scatter_[{3}]offset[_{4}], but I rather write as d, because it does not depends on the position of the parameter.


https://github.com/llvm/llvm-project/pull/71290