r261953 - in /branches/gcc-7-branch/gcc: Change...

[jakub@gcc.gnu.org]

Author: jakub
Date: Fri Jun 22 21:10:17 2018
New Revision: 261953

URL: https://gcc.gnu.org/viewcvs?rev=261953&root=gcc&view=rev
Log:
	Backported from mainline
	2018-04-10  Jakub Jelinek  <jakub@redhat.com>

	PR rtl-optimization/85300
	* combine.c (subst): Handle subst of CONST_SCALAR_INT_P new_rtx also
	into FLOAT and UNSIGNED_FLOAT like ZERO_EXTEND, return a CLOBBER if
	simplify_unary_operation fails.

	* gcc.dg/pr85300.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr85300.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/combine.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog