5e606ed90a
Previously the SLP pattern matcher was using STMT_VINFO_SLP_VECT_ONLY as a way to dissolve the SLP only patterns during SLP cancellation. However it seems like the semantics for STMT_VINFO_SLP_VECT_ONLY are slightly different than what I expected. Namely that the non-SLP path can still use a statement marked STMT_VINFO_SLP_VECT_ONLY. One such example is masked loads which are used both in the SLP and non-SLP path. To fix this I now introduce a new flag STMT_VINFO_SLP_VECT_ONLY_PATTERN which is used only by the pattern matcher. gcc/ChangeLog: PR tree-optimization/98928 * tree-vect-loop.c (vect_analyze_loop_2): Change STMT_VINFO_SLP_VECT_ONLY to STMT_VINFO_SLP_VECT_ONLY_PATTERN. * tree-vect-slp-patterns.c (complex_pattern::build): Likewise. * tree-vectorizer.h (STMT_VINFO_SLP_VECT_ONLY_PATTERN): New. (class _stmt_vec_info): Add slp_vect_pattern_only_p. gcc/testsuite/ChangeLog: PR tree-optimization/98928 * gcc.target/i386/pr98928.c: New test. |
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