From 9eb690320d5d06babd7dbd6fdbc3c2802a966c3d Mon Sep 17 00:00:00 2001
From: Henrik Brodin <90325907+hbrodin@users.noreply.github.com>
Date: Wed, 5 Feb 2025 13:48:36 +0100
Subject: [PATCH] Add missing test cases

---
 mlir/test/mlir-link/single-global-usage.mlir | 12 ++++++++
 mlir/test/mlir-link/single-global.mlir       | 32 ++++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 mlir/test/mlir-link/single-global-usage.mlir
 create mode 100644 mlir/test/mlir-link/single-global.mlir

diff --git a/mlir/test/mlir-link/single-global-usage.mlir b/mlir/test/mlir-link/single-global-usage.mlir
new file mode 100644
index 0000000000000..66e87938d8959
--- /dev/null
+++ b/mlir/test/mlir-link/single-global-usage.mlir
@@ -0,0 +1,12 @@
+// RUN: mlir-link -split-input-file %s | FileCheck %s
+
+// CHECK:  llvm.mlir.global external @number(7 : i32) {addr_space = 0 : i32} : i32
+
+// -----
+
+llvm.mlir.global @number(7 : i32) : i32
+
+
+// -----
+llvm.mlir.global @number() : i32
+
diff --git a/mlir/test/mlir-link/single-global.mlir b/mlir/test/mlir-link/single-global.mlir
new file mode 100644
index 0000000000000..28c61fa51c6ab
--- /dev/null
+++ b/mlir/test/mlir-link/single-global.mlir
@@ -0,0 +1,32 @@
+// RUN: mlir-link -split-input-file %s | FileCheck %s
+
+// CHECK:  llvm.mlir.global external @number(7 : i32) {addr_space = 0 : i32} : i32
+// CHECK-NEXT:  llvm.func @f2() -> i32 {
+// CHECK-NEXT:    %0 = llvm.call @f1() : () -> i32
+// CHECK-NEXT:    llvm.return %0 : i32
+// CHECK-NEXT:  }
+// CHECK-NEXT:  llvm.func @f1() -> i32 {
+// CHECK-NEXT:    %0 = llvm.mlir.addressof @number : !llvm.ptr
+// CHECK-NEXT:    %1 = llvm.load %0 : !llvm.ptr -> i32
+// CHECK-NEXT:    llvm.return %1 : i32
+// CHECK-NEXT:  }
+
+// -----
+
+llvm.mlir.global @number(7 : i32) : i32
+
+llvm.func @f1() -> i32
+
+llvm.func @f2() -> i32 {
+  %0 = llvm.call @f1() : () -> i32 
+  llvm.return %0 : i32
+}
+
+// -----
+llvm.mlir.global @number() {} : i32
+
+llvm.func @f1() -> i32  {
+  %0 = llvm.mlir.addressof @number : !llvm.ptr
+  %1 = llvm.load %0 : !llvm.ptr -> i32
+  llvm.return %1 : i32
+}