From 1b3b70e371d10ec9a1272bd10f7e08d43e63b511 Mon Sep 17 00:00:00 2001
From: David Majnemer <david.majnemer@gmail.com>
Date: Wed, 8 Oct 2014 07:23:31 +0000
Subject: GlobalOpt: Don't drop unused memberes of a Comdat

A linkonce_odr member of a COMDAT shouldn't be dropped if we need to
keep the entire COMDAT group.

This fixes PR21191.

llvm-svn: 219283
---
 llvm/test/Transforms/GlobalOpt/pr21191.ll | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 llvm/test/Transforms/GlobalOpt/pr21191.ll

(limited to 'llvm/test/Transforms')

diff --git a/llvm/test/Transforms/GlobalOpt/pr21191.ll b/llvm/test/Transforms/GlobalOpt/pr21191.ll
new file mode 100644
index 00000000000..39b8eee9a25
--- /dev/null
+++ b/llvm/test/Transforms/GlobalOpt/pr21191.ll
@@ -0,0 +1,19 @@
+; RUN: opt < %s -globalopt -S | FileCheck %s
+
+$c = comdat any
+; CHECK: $c = comdat any
+
+define linkonce_odr void @foo() comdat $c {
+  ret void
+}
+; CHECK: define linkonce_odr void @foo() comdat $c
+
+define linkonce_odr void @bar() comdat $c {
+  ret void
+}
+; CHECK: define linkonce_odr void @bar() comdat $c
+
+define void @zed()  {
+  call void @foo()
+  ret void
+}
-- 
cgit v1.2.3