Fix to make sure that a comdat group gets generated correctly for a static member
of instantiated C++ templates.
Patch by Kristof Beyls!
llvm-svn: 151250
diff --git a/llvm/test/CodeGen/ARM/odr_comdat.ll b/llvm/test/CodeGen/ARM/odr_comdat.ll
new file mode 100644
index 0000000..a1fcc9b
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/odr_comdat.ll
@@ -0,0 +1,16 @@
+; RUN: llc < %s -mtriple=arm-linux-gnueabi | FileCheck %s -check-prefix=ARMGNUEABI
+
+; Checking that a comdat group gets generated correctly for a static member
+; of instantiated C++ templates.
+; see http://sourcery.mentor.com/public/cxx-abi/abi.html#vague-itemplate
+; section 5.2.6 Instantiated templates
+; "Any static member data object is emitted in a COMDAT identified by its mangled
+; name, in any object file with a reference to its name symbol."
+
+; Case 1: variable is not explicitly initialized, and ends up in a .bss section
+; ARMGNUEABI: .section .bss._ZN1CIiE1iE,"aGw",%nobits,_ZN1CIiE1iE,comdat
+@_ZN1CIiE1iE = weak_odr global i32 0, align 4
+
+; Case 2: variable is explicitly initialized, and ends up in a .data section
+; ARMGNUEABI: .section .data._ZN1CIiE1jE,"aGw",%progbits,_ZN1CIiE1jE,comdat
+@_ZN1CIiE1jE = weak_odr global i32 12, align 4