1 files changed, 34 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/sub-cmp-peephole.ll b/test/CodeGen/ARM/sub-cmp-peephole.ll
new file mode 100644
index 0000000000..b3a9dc5124
--- /dev/null
+++ b/test/CodeGen/ARM/sub-cmp-peephole.ll
@@ -0,0 +1,34 @@
+; RUN: llc < %s -march=arm | FileCheck %s
+
+define i32 @f(i32 %a, i32 %b) nounwind ssp {
+entry:
+; CHECK: _f:
+; CHECK: subs
+; CHECK-NOT: cmp
+  %cmp = icmp sgt i32 %a, %b
+  %sub = sub nsw i32 %a, %b
+  %sub. = select i1 %cmp, i32 %sub, i32 0
+  ret i32 %sub.
+}
+
+define i32 @g(i32 %a, i32 %b) nounwind ssp {
+entry:
+; CHECK: _g:
+; CHECK: subs
+; CHECK-NOT: cmp
+  %cmp = icmp slt i32 %a, %b
+  %sub = sub nsw i32 %b, %a
+  %sub. = select i1 %cmp, i32 %sub, i32 0
+  ret i32 %sub.
+}
+
+define i32 @h(i32 %a, i32 %b) nounwind ssp {
+entry:
+; CHECK: _h:
+; CHECK: subs
+; CHECK-NOT: cmp
+  %cmp = icmp sgt i32 %a, 3
+  %sub = sub nsw i32 %a, 3
+  %sub. = select i1 %cmp, i32 %sub, i32 %b
+  ret i32 %sub.
+}