From dbeecede809c1bffb016e48674622c5e8cb75a0c Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Sat, 23 Jan 2010 19:19:34 +0000
Subject: Teach DAE that even though it can't modify the function signature of
 an externally visible function, it can still find all callers of it and
 replace the parameters to a dead argument with undef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94322 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/DeadArgElim/deadexternal.ll | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 test/Transforms/DeadArgElim/deadexternal.ll

(limited to 'test')

diff --git a/test/Transforms/DeadArgElim/deadexternal.ll b/test/Transforms/DeadArgElim/deadexternal.ll
new file mode 100644
index 0000000000..84341781da
--- /dev/null
+++ b/test/Transforms/DeadArgElim/deadexternal.ll
@@ -0,0 +1,12 @@
+; RUN: opt -deadargelim -S %s | FileCheck %s
+
+define void @test(i32) {
+  ret void
+}
+
+define void @foo() {
+  call void @test(i32 0)
+  ret void
+; CHECK: @foo
+; CHECK: i32 undef
+}
-- 
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