https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126619
--- Comment #4 from Roger Sayle <roger at nextmovesoftware dot com> --- Created attachment 65243 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65243&action=edit proposed patch Hi Hongtao, Here's my patch to dramatically improve the code generated for V4SF vector initialization, which also happens to do exactly as you propose, i.e. fall back to ix86_expand_vector_init_concat in the general case. This has survived bootstrap and is currently regression testing (which will identify the testcases that need to be updated, in addition to spotting any problems). Please let me know if you have any feedback before I officially post the full patch to gcc-patches for review. Sorry for any inconvenience.
