2018-06-06 Richard Biener <rguenther@suse.de>

2018-06-06  Richard Biener  <rguenther@suse.de>

	Backport from mainline
	2018-06-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/86038
	* tracer.c (find_best_successor): Check probability for
	being initialized, bail out if not.

	* gcc.dg/pr86038.c: New testcase.

	2018-05-30  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/85964
	* tracer.c (better_p): Drop initialized count check, we only
	call the function with initialized counts now.
	(find_best_successor): Do find a best edge if one
	has uninitialized count.
	(find_best_predecessor): Likewise.  Do BB frequency check only
	if count is initialized.

	2018-05-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85934
	* tree-vect-generic.c (expand_vector_operations_1): Hoist
	vector boolean check before scalar optimization.

	* gcc.target/i386/pr85934.c: New testcase.

	2018-05-22  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/85863
	* tree-vect-stmts.c (vect_is_simple_cond): Only widen invariant
	comparisons when vectype is specified.
	(vectorizable_condition): Do not specify vectype for
	vect_is_simple_cond when SLP vectorizing.

	* gfortran.fortran-torture/compile/pr85863.f: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-8-branch@261237 138bc75d-0d04-0410-961f-82ee72b054a4