1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb2/sign_extend_inreg.ll b/test/CodeGen/Thumb2/sign_extend_inreg.ll
new file mode 100644
index 000000000000..9a02c1caeb6f
--- /dev/null
+++ b/test/CodeGen/Thumb2/sign_extend_inreg.ll
@@ -0,0 +1,22 @@
+; RUN: llc < %s -mcpu=cortex-a8 | FileCheck %s -check-prefix=CHECK-A8
+; RUN: llc < %s -mcpu=cortex-m3 | FileCheck %s -check-prefix=CHECK-M3
+
+target triple = "thumbv7-apple-darwin10"
+
+define arm_apcscc i32 @f1(i16* %ptr) nounwind {
+; CHECK-A8: f1
+; CHECK-A8: sxth
+; CHECK-M3: f1
+; CHECK-M3-NOT: sxth
+; CHECK-M3: bx lr
+  %1 = load i16* %ptr
+  %2 = icmp eq i16 %1, 1
+  %3 = sext i16 %1 to i32
+  br i1 %2, label %.next, label %.exit
+
+.next:
+  br label %.exit
+
+.exit:
+  ret i32 %3
+}