1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2010-11-29-PrologueBug.ll b/test/CodeGen/ARM/2010-11-29-PrologueBug.ll
new file mode 100644
index 0000000000000..8d7541feae949
--- /dev/null
+++ b/test/CodeGen/ARM/2010-11-29-PrologueBug.ll
@@ -0,0 +1,28 @@
+; RUN: llc < %s -mtriple=armv7-apple-darwin   | FileCheck %s --check-prefix=ARM
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s --check-prefix=THUMB2
+; rdar://8690640
+
+define i32* @t(i32* %x) nounwind {
+entry:
+; ARM: t:
+; ARM: push
+; ARM: mov r7, sp
+; ARM: bl _foo
+; ARM: bl _foo
+; ARM: bl _foo
+; ARM: ldmia sp!, {r7, pc}
+
+; THUMB2: t:
+; THUMB2: push
+; THUMB2: mov r7, sp
+; THUMB2: blx _foo
+; THUMB2: blx _foo
+; THUMB2: blx _foo
+; THUMB2: pop
+  %0 = tail call i32* @foo(i32* %x) nounwind
+  %1 = tail call i32* @foo(i32* %0) nounwind
+  %2 = tail call i32* @foo(i32* %1) nounwind
+  ret i32* %2
+}
+
+declare i32* @foo(i32*)