[Bug tree-optimization/34371] [4.3 Regression] verify_stmts failed (incorrect sharing of tree nodes)

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2007-12-10 22:49 -------
Subject: Bug 34371

Author: jakub
Date: Mon Dec 10 22:49:43 2007
New Revision: 130755

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130755
Log:
        PR tree-optimization/34371
        * tree-vectorizer.h (struct _loop_vec_info): Add num_iters_unchanged
        field.
        (LOOP_VINFO_NITERS_UNCHANGED): Define to num_iters_unchanged field.
        * tree-vectorizer.c (set_prologue_iterations,
        slpeel_tree_peel_loop_to_edge): Call unshare_expr on
        LOOP_VINFO_NITERS_UNCHANGED before using it.

        * gcc.c-torture/compile/20071207-1.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/20071207-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vectorizer.c
    trunk/gcc/tree-vectorizer.h


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34371