[Bug tree-optimization/51074] No constant folding performed for VEC_PERM_EXPR, VEC_INTERLEAVE*EXPR, VEC_EXTRACT*EXPR

Fri, 11 Nov 2011 11:56:03 -0800 

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51074

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-11 
19:55:26 UTC ---
Author: jakub
Date: Fri Nov 11 19:55:23 2011
New Revision: 181297

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181297
Log:
    PR tree-optimization/51074
    * fold-const.c (vec_cst_ctor_to_array, fold_vec_perm): New functions.
    (fold_binary_loc): Handle VEC_EXTRACT_EVEN_EXPR,
    VEC_EXTRACT_ODD_EXPR, VEC_INTERLEAVE_HIGH_EXPR and
    VEC_INTERLEAVE_LOW_EXPR with VECTOR_CST or CONSTRUCTOR operands.
    (fold_ternary_loc): Handle VEC_PERM_EXPR with VECTOR_CST or
    CONSTRUCTOR operands.
    * tree-ssa-propagate.c (valid_gimple_rhs_p): Handle ternary
    expressions.
    * tree-vect-generic.c (lower_vec_perm): Mask sel_int elements
    to 0 .. 2 * elements - 1.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/tree-ssa-propagate.c
    trunk/gcc/tree-vect-generic.c

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