1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/subh.ll b/llvm/test/CodeGen/Hexagon/subh.ll
new file mode 100644
index 00000000000..299687d7592
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/subh.ll
@@ -0,0 +1,24 @@
+; RUN: llc -march=hexagon < %s | FileCheck %s
+; CHECK: r{{[0-9]+}} = sub(r{{[0-9]+}}.{{L|l}},r{{[0-9]+}}.{{L|l}})
+
+; Function Attrs: nounwind readnone
+define i64 @f0(i64 %a0, i16 zeroext %a1, i16 zeroext %a2) #0 {
+b0:
+  %v0 = zext i16 %a1 to i32
+  %v1 = zext i16 %a2 to i32
+  %v2 = sub nsw i32 %v0, %v1
+  %v3 = shl i32 %v2, 16
+  %v4 = icmp slt i32 %v3, 65536
+  %v5 = ashr exact i32 %v3, 16
+  %v6 = select i1 %v4, i32 1, i32 %v5
+  %v7 = icmp sgt i32 %v6, 4
+  %v8 = add i32 %v6, 65535
+  %v9 = shl i64 %a0, 2
+  %v10 = and i32 %v8, 65535
+  %v11 = zext i32 %v10 to i64
+  %v12 = select i1 %v7, i64 3, i64 %v11
+  %v13 = or i64 %v12, %v9
+  ret i64 %v13
+}
+
+attributes #0 = { nounwind readnone }