On 09/16/2016 09:02 PM, Senthil Kumar Selvaraj wrote:
Does this make sense? I ran a reg test for the avr target with a
slightly older version of this patch, it did not show any regressions.
If this is the right fix, I'll make sure to run reg tests on x86_64
after backporting to a gcc version where that target used reload.
It's hard to say, and could have different effects on different targets.
One thing though, at the very least the reg_class_size test would have
to be adapted - the idea is to find the largest class, and there's a
risk here of ending up with a large class that only has one valid register.
You'll also want to verify this against
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54814
Bernd
