re PR middle-end/83977 (ICE in simd_clone_clauses_extract, at omp-simd-clone.c:184)

re PR middle-end/83977 (ICE in simd_clone_clauses_extract, at omp-simd-clone.c:184)

	PR middle-end/83977
	* ipa-fnsummary.c (compute_fn_summary): Clear can_change_signature
	on functions with #pragma omp declare simd or functions with simd
	attribute.
	* omp-simd-clone.c (expand_simd_clones): Revert 2018-01-24 change.
	* config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
	Remove trailing \n from warning_at calls.

	* c-c++-common/gomp/pr83977-1.c: Add -w to dg-options.

From-SVN: r257051