1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/Hexagon/maxh.ll b/test/CodeGen/Hexagon/maxh.ll
new file mode 100644
index 000000000000..79b5e922c1bb
--- /dev/null
+++ b/test/CodeGen/Hexagon/maxh.ll
@@ -0,0 +1,23 @@
+; RUN: llc -march=hexagon < %s | FileCheck %s
+; The result of max(half-word, half-word) is also half-word.
+; Check that we are not producing a sign extend after the max.
+; CHECK-NOT: sxth
+
+define i64 @test_cast(i64 %arg0, i16 zeroext %arg1, i16 zeroext %arg2) nounwind readnone {
+entry:
+  %conv.i = zext i16 %arg1 to i32
+  %conv1.i = zext i16 %arg2 to i32
+  %sub.i = sub nsw i32 %conv.i, %conv1.i
+  %sext.i = shl i32 %sub.i, 16
+  %cmp.i = icmp slt i32 %sext.i, 65536
+  %0 = ashr exact i32 %sext.i, 16
+  %conv7.i = select i1 %cmp.i, i32 1, i32 %0
+  %cmp8.i = icmp sgt i32 %conv7.i, 4
+  %conv7.op.i = add i32 %conv7.i, 65535
+  %shl = shl i64 %arg0, 2
+  %.mask = and i32 %conv7.op.i, 65535
+  %1 = zext i32 %.mask to i64
+  %conv = select i1 %cmp8.i, i64 3, i64 %1
+  %or = or i64 %conv, %shl
+  ret i64 %or
+}