re PR rtl-optimization/42216 (changes in scheduling regress 464.h264ref 20%)

	PR rtl-opt/42216
	* regrename.c: Error out if MAX_RECOG_OPERANDS is larger than
	HOST_BITS_PER_WIDE_INT.
	(verify_reg_in_set): New function, broken out of verify_reg_tracked.
	(verify_reg_tracked): Use it.
	(scan_rtx_reg): When seeing a use involving a superset of the
	registers in an existing chain, enlarge that chain.  Otherwise,
	allow subsets and set fail_current_block for all other kinds of
	overlap.
	(hide_operands): New argument UNTRACKED_OPERANDS; callers changed.
	Do not modify operands when the bit with the corresponding number
	is set in that bitmap.
	(build_def_use): When we see matching operands with different
	modes, don't set fail_current_block, but keep track of such
	operands in a bitmap if their registers aren't already tracked
	in an open chain.  Pass this bitmap to all hide_operands calls.

From-SVN: r155134

0 files changed, 0 insertions, 0 deletions