tree 6bb218dd5d7d3f36c4dae8669d558f65b531c994
parent 856c493db1d5e2fa9377f4a0c438afbcaf6c7e01
author Richard Biener <rguenther@suse.de> 1746448174 +0200
committer Richard Biener <rguenther@suse.de> 1746953656 +0200

tree-optimization/120089 - force all PHIs live for early-break vect

The following makes sure to even mark unsupported PHIs live when
doing early-break vectorization since otherwise we fail to validate
we can vectorize those and generate wrong code based on the scalar
PHIs which would only work with a vectorization factor of one.

	PR tree-optimization/120089
	* tree-vect-stmts.cc (vect_stmt_relevant_p): Mark all
	PHIs live when not already so and doing early-break
	vectorization.
	(vect_mark_stmts_to_be_vectorized): Skip virtual PHIs.
	* tree-vect-slp.cc (vect_analyze_slp): Robustify handling
	of early-break forced IVs.

	* gcc.dg/vect/vect-early-break_134-pr120089.c: New testcase.

(cherry picked from commit 9def392a1b63a198d15d972f73b4afc888389d7c)