Alignment needs to be a compile-time constant. Previously the code
generators had to jump through hoops to ensure this was the case as the
alignment was passed as a CmmExpr in the arguments list. Now we take
care of this up front.
This fixes Trac #8131.
Authored-by: Reid Barton <firstname.lastname@example.org>
Dusted-off-by: Ben Gamari <email@example.com>
Tests for T8131