[Bug rtl-optimization/104637] [10/11 Regression] ICE: maximum number of LRA assignment passes is achieved (30) with -Og -fno-forward-propagate -mavx since r9-5221-gd8fcab689435a29d
cvs-commit at gcc dot gnu.org
Tue Jun 14 15:48:48 GMT 2022
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Vladimir Makarov
Author: Vladimir N. Makarov <email@example.com>
Date: Mon Feb 28 16:43:50 2022 -0500
[PR104637] LRA: Split hard regs as many as possible on one subpass
LRA hard reg split subpass is a small subpass used as the last
resort for LRA when it can not assign a hard reg to a reload
pseudo by other ways (e.g. by spilling non-reload pseudos). For
simplicity the subpass works on one split base (as each split
changes pseudo live range info). In this case it results in
reaching maximal possible number of subpasses. The patch
implements as many non-overlapping hard reg splits
splits as possible on each subpass.
* lra-assigns.c (lra_split_hard_reg_for): Split hard regs as many
as possible on one subpass.
* gcc.target/i386/pr104637.c: New.
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