r256525 - in /trunk/gcc: ChangeLog caller-save.c

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Thu Jan 11 09:54:26 2018
New Revision: 256525

URL: https://gcc.gnu.org/viewcvs?rev=256525&root=gcc&view=rev
Log:
Fix mode_for_size units in caller-save.c (PR83761)

The new opt_mode asserts triggered for replace_reg_with_saved_mem
because it was passing bytes rather than bits to mode_for_size.
Previously we ended up with a BLKmode register instead, but
presumably that didn't matter because this is "only" used for
debug insns.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR rtl-optimization/83761
	* caller-save.c (replace_reg_with_saved_mem): Pass bits rather
	than bytes to mode_for_size.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/caller-save.c