Add a test case for r212596

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212828 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Instrumentation/AddressSanitizer/do-not-touch-comdat-global.ll b/test/Instrumentation/AddressSanitizer/do-not-touch-comdat-global.ll
new file mode 100644 (file)
index 0000000..8d14e83
--- /dev/null
+++ b/test/Instrumentation/AddressSanitizer/do-not-touch-comdat-global.ll
@@ -0,0 +1,14 @@
+; This test checks that we instrument regular globals, but do not touch
+; the COMDAT ones.
+; RUN: opt < %s -asan -asan-module -S | FileCheck %s
+target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32"
+target triple = "i686-pc-windows-msvc"
+; no action should be taken for these globals
+$global_noinst = comdat largest
+@aliasee = private unnamed_addr constant [2 x i8] [i8 1, i8 2], comdat $global_noinst
+@global_noinst = unnamed_addr alias [2 x i8]* @aliasee
+; CHECK-NOT: {{asan_gen.*global_noinst}}
+; CHECK-DAG: @global_noinst = unnamed_addr alias [2 x i8]* @aliasee
+@global_inst = private constant [2 x i8] [i8 1, i8 2]
+; CHECK-DAG: {{asan_gen.*global_inst}}
+; CHECK: @asan.module_ctor