new testcases for integer abs function
llvm-svn: 35880
diff --git a/llvm/test/CodeGen/ARM/iabs.ll b/llvm/test/CodeGen/ARM/iabs.ll
new file mode 100644
index 0000000..26819de
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/iabs.ll
@@ -0,0 +1,20 @@
+; RUN: llvm-as < %s | llc -march=arm -stats 2>&1 | grep '3 .*Number of machine instrs printed' &&
+; RUN: llvm-as < %s | llc -march=thumb -stats 2>&1 | 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
+}
+