From 2fdbbe307dd7a3fb0a0cbe5294c6eefbb1e5c32d Mon Sep 17 00:00:00 2001
From: Stephen Lin <stephenwlin@gmail.com>
Date: Mon, 22 Apr 2013 17:23:49 +0000
Subject: [PATCH] Extra paranoid test for r179925 (verify that tail calls are
not generated to 'this'-returning constructors of objects with different
'this' pointers than the caller)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180032 91177308-0d34-0410-b5e6-96231b3b80d8
---
test/CodeGen/ARM/this-return.ll | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/test/CodeGen/ARM/this-return.ll b/test/CodeGen/ARM/this-return.ll
index 0266153b941..f06e4a4f8dd 100644
--- a/test/CodeGen/ARM/this-return.ll
+++ b/test/CodeGen/ARM/this-return.ll
@@ -5,6 +5,7 @@
%struct.B = type { i32 }
%struct.C = type { %struct.B }
%struct.D = type { %struct.B }
+%struct.E = type { %struct.B, %struct.B }
declare %struct.A* @A_ctor_base(%struct.A* returned)
declare %struct.B* @B_ctor_base(%struct.B* returned, i32)
@@ -89,3 +90,16 @@ entry:
%call2 = tail call %struct.B* @B_ctor_complete(%struct.B* %b, i32 %x)
ret %struct.D* %this
}
+
+define %struct.E* @E_ctor_base(%struct.E* %this, i32 %x) {
+entry:
+; CHECKELF: E_ctor_base:
+; CHECKELF-NOT: b B_ctor_complete
+; CHECKT2D: E_ctor_base:
+; CHECKT2D-NOT: b.w _B_ctor_complete
+ %b = getelementptr inbounds %struct.E* %this, i32 0, i32 0
+ %call = tail call %struct.B* @B_ctor_complete(%struct.B* %b, i32 %x)
+ %b2 = getelementptr inbounds %struct.E* %this, i32 0, i32 1
+ %call2 = tail call %struct.B* @B_ctor_complete(%struct.B* %b2, i32 %x)
+ ret %struct.E* %this
+}