From 4ece4e26f237eaeaf04bfe124c51d4ed918439b0 Mon Sep 17 00:00:00 2001
From: Jeffrey Yasskin <jyasskin@google.com>
Date: Mon, 5 Oct 2009 23:51:08 +0000
Subject: [PATCH] Add a test for http://llvm.org/PR3043.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83346 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/ExecutionEngine/stubs.ll | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 test/ExecutionEngine/stubs.ll

diff --git a/test/ExecutionEngine/stubs.ll b/test/ExecutionEngine/stubs.ll
new file mode 100644
index 00000000000..525d135ff45
--- /dev/null
+++ b/test/ExecutionEngine/stubs.ll
@@ -0,0 +1,35 @@
+; RUN: llvm-as < %s | lli -disable-lazy-compilation=false
+
+define i32 @main() nounwind {
+entry:
+	call void @lazily_compiled_address_is_consistent()
+	ret i32 0
+}
+
+; Test PR3043: @test should have the same address before and after
+; it's JIT-compiled.
+@funcPtr = common global i1 ()* null, align 4
+@lcaic_failure = internal constant [46 x i8] c"@lazily_compiled_address_is_consistent failed\00"
+
+define void @lazily_compiled_address_is_consistent() nounwind {
+entry:
+	store i1 ()* @test, i1 ()** @funcPtr
+	%pass = tail call i1 @test()		; <i32> [#uses=1]
+	br i1 %pass, label %pass_block, label %fail_block
+pass_block:
+	ret void
+fail_block:
+	call i32 @puts(i8* getelementptr([46 x i8]* @lcaic_failure, i32 0, i32 0))
+	call void @exit(i32 1)
+	unreachable
+}
+
+define i1 @test() nounwind {
+entry:
+	%tmp = load i1 ()** @funcPtr
+	%eq = icmp eq i1 ()* %tmp, @test
+	ret i1 %eq
+}
+
+declare i32 @puts(i8*) noreturn
+declare void @exit(i32) noreturn