r278777 - in /trunk/gcc: ChangeLog combine.c te...

[jakub@gcc.gnu.org]

Author: jakub
Date: Wed Nov 27 16:32:54 2019
New Revision: 278777

URL: https://gcc.gnu.org/viewcvs?rev=278777&root=gcc&view=rev
Log:
	PR rtl-optimization/92510
	* combine.c (gen_lowpart_for_combine): Only transform lowpart subreg
	of comparison into a comparison with different mode if both imode and
	omode are scalar integral modes.

	* gcc.dg/pr92510.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr92510.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/testsuite/ChangeLog