[Mlir-commits] [mlir] [mlir][LLVM|ptr] Add the `#llvm.address_space` attribute, and allow `ptr` translation (PR #156333)

[Fabian Mora]

================
@@ -23,6 +24,41 @@ class LLVM_Attr<string name, string attrMnemonic,
   let mnemonic = attrMnemonic;
 }
 
+//===----------------------------------------------------------------------===//
+// AddressSpaceAttr
+//===----------------------------------------------------------------------===//
+
+def LLVM_AddressSpaceAttr :
+    LLVM_Attr<"AddressSpace", "address_space", [
+    DeclareAttrInterfaceMethods<MemorySpaceAttrInterface>
+  ]> {
+  let summary = "LLVM address space";
+  let description = [{
+    The `address_space` attribute represents an LLVM address space. It takes an
+    unsigned integer parameter that specifies the address space number.
+
+    Different address spaces in LLVM can have different properties:
+    - Address space 0 is the default/generic address space
+    - Other address spaces may have specific semantics (e.g., shared memory,
+      constant memory, etc.) depending on the target architecture
+
+    Example:
+
+    ```mlir
+    // Address space 0 (default)
+    #llvm.address_space<0>
+
+    // Address space 1 (e.g., global memory on some targets)
+    #llvm.address_space<1>
+
+    // Address space 3 (e.g., shared memory on some GPU targets)
+    #llvm.address_space<3>
+    ```
+  }];
+  let parameters = (ins "unsigned":$addressSpace);
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fabianmcg wrote:

Should I bundle that new interface into this PR, or lets land this and then land the interface?

https://github.com/llvm/llvm-project/pull/156333