r278925 - in /trunk/gcc: ChangeLog match.pd tes...

[jakub@gcc.gnu.org]

Author: jakub
Date: Tue Dec  3 09:20:43 2019
New Revision: 278925

URL: https://gcc.gnu.org/viewcvs?rev=278925&root=gcc&view=rev
Log:
	PR tree-optimization/92734
	* match.pd ((CST1 - A) +- CST2 -> CST3 - A,
	CST1 - (CST2 - A) -> CST3 + A): Handle nop casts around
	inner subtraction.

	* gcc.dg/tree-ssa/pr92734.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr92734.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog