[Bug target/82221] internal compiler error: in print_reg, at config/i386/i386.c:17656
jpoimboe at redhat dot com
gcc-bugzilla@gcc.gnu.org
Fri Sep 15 22:25:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82221
--- Comment #12 from Josh Poimboeuf <jpoimboe at redhat dot com> ---
While I know about DRAP, I'm otherwise not very familiar with GCC internals, so
I don't quite understand your points.
I would like to clarify that most of the time, when we use "sp" in the clobbers
list, the stack does *not* need to be realigned. And in those cases, we would
*not* want DRAP, because it's not needed. We would instead just want the
normal frame pointer setup.
For cases where the stack pointer *does* need to be realigned, DRAP is fine.
I can try out your patch next week to see what changes it makes to the
generated code. Thanks!
More information about the Gcc-bugs
mailing list