Don't merge restore with tail call instruction.

[oota-llvm.git] / test / CodeGen / ARM / call-tc.ll

diff --git a/test/CodeGen/ARM/call-tc.ll b/test/CodeGen/ARM/call-tc.ll
index 213db5e1d01eeaed3aa0cd753a20234a602799ec..a77aba037be5fd5bc982a6e6ef440750771b8789 100644 (file)
--- a/test/CodeGen/ARM/call-tc.ll
+++ b/test/CodeGen/ARM/call-tc.ll
@@ -1,5 +1,6 @@
 ; RUN: llc < %s -mtriple=armv6-apple-darwin -mattr=+vfp2 -arm-tail-calls | FileCheck %s -check-prefix=CHECKV6
 ; RUN: llc < %s -mtriple=armv6-linux-gnueabi -relocation-model=pic -mattr=+vfp2 -arm-tail-calls | FileCheck %s -check-prefix=CHECKELF
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin -arm-tail-calls | FileCheck %s -check-prefix=CHECKT2
 
 @t = weak global i32 ()* null           ; <i32 ()**> [#uses=1]
 
@@ -63,3 +64,24 @@ entry:
   %0 = sdiv i32 %a, %b
   ret i32 %0
 }
+
+; Make sure the tail call instruction isn't deleted
+; rdar://8309338
+declare void @foo() nounwind
+
+define void @t7() nounwind {
+entry:
+; CHECKT2: t7:
+; CHECKT2: blxeq _foo
+; CHECKT2-NEXT: pop.w
+; CHECKT2-NEXT: b.w _foo
+  br i1 undef, label %bb, label %bb1.lr.ph
+
+bb1.lr.ph:
+  tail call void @foo() nounwind
+  unreachable
+
+bb:
+  tail call void @foo() nounwind
+  ret void
+}