Don't merge restore with tail call instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124167 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/call-tc.ll b/test/CodeGen/ARM/call-tc.ll
index 213db5e..a77aba0 100644
--- 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 @@
%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
+}