[Mlir-commits] [mlir] [mlir][ArmSME] Make use of backend function attributes for enabling ZA storage (PR #71044)

[Andrzej Warzyński]

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@@ -177,6 +178,39 @@ if(LLVM_ENABLE_PIC)
     target_link_options(mlir_async_runtime PRIVATE "-Wl,-exclude-libs,ALL")
   endif()
 
+  if (MLIR_RUN_ARM_SME_TESTS)
+    if (NOT DEFINED LLVM_MAIN_SRC_DIR)
+      message(FATAL_ERROR "LLVM_MAIN_SRC_DIR must be provided to build the ArmSME runtime.")
+    endif()
+
+    if (NOT DEFINED MLIR_ARM_SME__CAN_ASSEMBLE_ARM_SME)
+      # This should work on an AArch64 host with a recent version of clang.
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banach-space wrote:

[nit] Rather than "recent" (which is a relative term), use something like "Clang 17 or higher". This way people will know exactly what's required.

https://github.com/llvm/llvm-project/pull/71044