[llvm] [AArch64] Model ZA array using inaccessible memory (PR #132058)

[Paul Walker via llvm-commits]

================
@@ -3189,56 +3189,56 @@ let TargetPrefix = "aarch64" in {
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                  llvm_anyvector_ty, LLVMMatchType<0>],
-                []>;
+                [IntrInaccessibleMemOnly]>;
 
   class SME2_Matrix_ArrayVector_VG2_Multi_Single_Intrinsic
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                  llvm_anyvector_ty, LLVMMatchType<0>,
                  LLVMMatchType<0>],
-                []>;
+                [IntrInaccessibleMemOnly]>;
 
   class SME2_Matrix_ArrayVector_VG4_Multi_Single_Intrinsic
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                  llvm_anyvector_ty, LLVMMatchType<0>, LLVMMatchType<0>, LLVMMatchType<0>,
                  LLVMMatchType<0>],
-                []>;
+                [IntrInaccessibleMemOnly]>;
 
   class SME2_Matrix_ArrayVector_VG2_Multi_Multi_Intrinsic
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                  llvm_anyvector_ty, LLVMMatchType<0>,
                  LLVMMatchType<0>, LLVMMatchType<0>],
-                []>;
+                [IntrInaccessibleMemOnly]>;
 
   class SME2_Matrix_ArrayVector_VG4_Multi_Multi_Intrinsic
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                  llvm_anyvector_ty, LLVMMatchType<0>, LLVMMatchType<0>, LLVMMatchType<0>,
                  LLVMMatchType<0>, LLVMMatchType<0>, LLVMMatchType<0>, LLVMMatchType<0>],
-                []>;
+                [IntrInaccessibleMemOnly]>;
 
   class SME2_Matrix_ArrayVector_Single_Index_Intrinsic
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                 llvm_anyvector_ty,
                 LLVMMatchType<0>, llvm_i32_ty],
-                [ImmArg<ArgIndex<3>>]>;
+                [IntrInaccessibleMemOnly, ImmArg<ArgIndex<3>>]>;
 
   class SME2_Matrix_ArrayVector_VG2_Multi_Index_Intrinsic
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                  llvm_anyvector_ty, LLVMMatchType<0>,
                  LLVMMatchType<0>, llvm_i32_ty],
-                [ImmArg<ArgIndex<4>>]>;
+                [IntrInaccessibleMemOnly, ImmArg<ArgIndex<4>>]>;
 
   class SME2_Matrix_ArrayVector_VG4_Multi_Index_Intrinsic
     : DefaultAttrsIntrinsic<[],
                 [llvm_i32_ty,
                  llvm_anyvector_ty, LLVMMatchType<0>, LLVMMatchType<0>, LLVMMatchType<0>,
                  LLVMMatchType<0>, llvm_i32_ty],
-                [ImmArg<ArgIndex<6>>]>;
+                [IntrInaccessibleMemOnly, ImmArg<ArgIndex<6>>]>;
 
   class SME2_VG2_Multi_Imm_Intrinsic
     : DefaultAttrsIntrinsic<[LLVMSubdivide2VectorType<0>],
----------------
paulwalker-arm wrote:

I guess you could land an NFC change first and then update this PR to it but it's all in the same file so I'm happy either way.  What I care most about is when reviewing this PR, it can be seen that all the SME classes have some combination of `InaccessibleMem` flags.

https://github.com/llvm/llvm-project/pull/132058