[gcc r14-7549] gccrs: Add test from issue 1446

[Arthur Cohen]

https://gcc.gnu.org/g:a365e3ed705caf88509acc9237cfba1bffcea797

commit r14-7549-ga365e3ed705caf88509acc9237cfba1bffcea797
Author: Owen Avery <powerboat9.gamer@gmail.com>
Date:   Tue May 2 20:21:42 2023 -0400

    gccrs: Add test from issue 1446
    
    gcc/testsuite/ChangeLog:
    
            * rust/compile/issue-1446.rs: New test.
    
    Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

Diff:
---
 gcc/testsuite/rust/compile/issue-1446.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/gcc/testsuite/rust/compile/issue-1446.rs b/gcc/testsuite/rust/compile/issue-1446.rs
new file mode 100644
index 00000000000..8bfa42b9dac
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-1446.rs
@@ -0,0 +1,10 @@
+pub fn to_le(this: u32) -> u32 {
+    #[cfg(target_endian = "little")]
+    {
+        this
+    }
+    #[cfg(not(target_endian = "little"))]
+    {
+        this.swap_bytes()
+    }
+}