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-rw-r--r--llvm/test/Transforms/GlobalDCE/externally_available.ll21
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/Transforms/GlobalDCE/externally_available.ll b/llvm/test/Transforms/GlobalDCE/externally_available.ll
new file mode 100644
index 00000000000..bc54db38cee
--- /dev/null
+++ b/llvm/test/Transforms/GlobalDCE/externally_available.ll
@@ -0,0 +1,21 @@
+; RUN: opt < %s -globaldce -S | FileCheck %s
+
+; test_global should not be emitted to the .s file.
+; CHECK-NOT: @test_global =
+@test_global = available_externally global i32 4
+
+; test_global2 is a normal global using an available externally function.
+; CHECK: @test_global2 =
+@test_global2 = global i32 ()* @test_function2
+
+; test_function should not be emitted to the .s file.
+; CHECK-NOT: define {{.*}} @test_function()
+define available_externally i32 @test_function() {
+ ret i32 4
+}
+
+; test_function2 isn't actually dead even though it's available externally.
+; CHECK: define available_externally i32 @test_function2()
+define available_externally i32 @test_function2() {
+ ret i32 4
+}
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