[Bug bootstrap/33306] [4.3 regression] Bootstrap failure on alpha: ICE in convert_move, at expr.c:369

[ro at techfak dot uni-bielefeld dot de]

------- Comment #3 from ro at techfak dot uni-bielefeld dot de  2007-09-05 18:09 -------
Subject: Re:  [4.3 regression] Bootstrap failure on alpha: ICE in convert_move,
at expr.c:369

A reghunt revealed that this patch

2007-08-31  Richard Sandiford  <richard@codesourcery.com>

        * optabs.c (shift_optab_p, commutative_optab_p): New functions,
        split out from expand_binop.
        (avoid_expensive_constant): New function.
        (expand_binop_directly): Remove commutative_op argument and
        call cummutative_optab_p instead.  Do not change op0 or op1
        when swapping xop0 and xop1.  Apply avoid_expensive_constant
        to each argument after potential swapping.  Enforce the
        canonical order of commutative operands.
        (expand_binop): Use shift_optab_p and commutative_optab_p.
        Update the calls to expand_binop_directly.  Only force constants
        into registers when widening an operation.  Only swap operands
        once a direct expansion has been rejected.
        (expand_twoval_binop): Only force constants into registers when
        using a direct expansion.

is the culprit.

        Rainer


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33306