PHIOPT: Allow moving of some builtin calls

While moving working on moving
cond_removal_in_builtin_zero_pattern to match, I noticed
that functions were not allowed to move as we reject all
non-assignments.
This changes to allowing a few calls which are known not
to throw/trap. Right now it is restricted to ones
which cond_removal_in_builtin_zero_pattern handles but
adding more is just adding it to the switch statement.

gcc/ChangeLog:

	* tree-ssa-phiopt.cc (empty_bb_or_one_feeding_into_p):
	Allow some builtin/internal function calls which
	are known not to trap/throw.
	(phiopt_worker::match_simplify_replacement):
	Use name instead of getting the lhs again.

0 files changed, 0 insertions, 0 deletions