1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/ConstProp/bswap.ll b/test/Transforms/ConstProp/bswap.ll
new file mode 100644
index 0000000..2d7f964
--- /dev/null
+++ b/test/Transforms/ConstProp/bswap.ll
@@ -0,0 +1,22 @@
+; bswap should be constant folded when it is passed a constant argument
+
+; RUN: llvm-as < %s | opt -constprop | llvm-dis | not grep call
+
+declare ushort %llvm.bswap.i16(ushort)
+declare uint %llvm.bswap.i32(uint)
+declare ulong %llvm.bswap.i64(ulong)
+
+ushort %W() {
+	%Z = call ushort %llvm.bswap.i16(ushort 1)
+	ret ushort %Z
+}
+
+uint %X() {
+	%Z = call uint %llvm.bswap.i32(uint 1)
+	ret uint %Z
+}
+
+ulong %Y() {
+	%Z = call ulong %llvm.bswap.i64(ulong 1)
+	ret ulong %Z
+}