--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/llvm/test/Feature/fold-fpcast.ll	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | llvm-dis | not grep bitcast
+
+define i32 @test1() {
+   ret i32 bitcast(float 0x400D9999A0000000 to i32)
+}
+
+define float @test2() {
+  ret float bitcast(i32 17 to float)
+}
+
+define i64 @test3() {
+  ret i64 bitcast (double 0x400921FB4D12D84A to i64)
+}
+
+define double @test4() {
+  ret double bitcast (i64 42 to double)
+}
+