https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105134
--- Comment #10 from piliu at redhat dot com --- (In reply to Andrew Pinski from comment #7) > I am trying to understand this. Is it ok to use the SSE registers inside > purgatory or not? > SSE can speed up the program, and if possible it is suggested to turn on. Any guideline about when it can not be used? > Now that the vectorizer is used turned on at -O2 and above, without > -mno-sse, on x86_64 target, the vector instructions are generated. and since > this is inside a tiny bootloader, I am suspecting you can't use SSE > instructions here. > What is broken by SSE? That can be more persuaded. Thanks, Pingfan
