[Bug target/41055] libgcc functions and -mregparm don't work well together

[hpa at zytor dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41055

--- Comment #7 from H. Peter Anvin <hpa at zytor dot com> ---
Created attachment 45861
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45861&action=edit
Test case (assembly output)