1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/iabs.ll b/test/CodeGen/ARM/iabs.ll
new file mode 100644
index 0000000000000..f10591f41f765
--- /dev/null
+++ b/test/CodeGen/ARM/iabs.ll
@@ -0,0 +1,22 @@
+; RUN: llvm-as < %s | llc -march=arm -stats |& \
+; RUN:   grep {3 .*Number of machine instrs printed}
+; RUN: llvm-as < %s | llc -march=thumb -stats |& \
+; RUN:   grep {4 .*Number of machine instrs printed}
+
+;; Integer absolute value, should produce something as good as: ARM:
+;;   add r3, r0, r0, asr #31
+;;   eor r0, r3, r0, asr #31
+;;   bx lr
+;; Thumb:
+;;   asr r2, r0, #31
+;;   add r0, r0, r2
+;;   eor r0, r2
+;;   bx lr
+
+define i32 @test(i32 %a) {
+        %tmp1neg = sub i32 0, %a
+        %b = icmp sgt i32 %a, -1
+        %abs = select i1 %b, i32 %a, i32 %tmp1neg
+        ret i32 %abs
+}
+