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

diff --git a/test/ExecutionEngine/stubs.ll b/test/ExecutionEngine/stubs.ll
new file mode 100644 (file)
index 0000000..525d135
--- /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