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Re: [PATCH, vectorizer]: Fix PR tree-optimization/32216, ICE: verify_stmts failed (invalid reference prefix)

On 6/6/07, Uros Bizjak <ubizjak@gmail.com> wrote:
Hello!

We should always determine signedness of FIX_TRUNC_EXPR and derived
vectorized expressions based on the signedness of output operand.
Signendness of FLOAT_EXPR and derived vectorized expressions should be
determined based on the signedness of input operand.

Attached patch cleans this mess and fixes pr32216. Patch was
bootstrapped on i686-pc-linux-gnu, regression tested for all default
languages. OK for mainline?

This is ok.

Thanks,
Richard.

2007-06-06 Uros Bizjak <ubizjak@gmail.com>

        PR tree-optimization/32216
        * tree-vectorizer.c (supportable_widening_operation): Determine
        signedness of FIX_TRUNC_EXPR from output operand.
        (supportable_narrowing_operation): Ditto.
        * tree-vect-generic.c (expand_vector_operations_1): Determine
        signedness of VEC_UNPACK_FLOAT_HI_EXPR and VEC_UNPACK_FLOAT_LO_EXPR
        from input operand.

testsuite/ChangeLog:

2007-06-06 Uros Bizjak <ubizjak@gmail.com>

        PR tree-optimization/32216
        * gcc.dg/vect/pr32216.c: New test.

Uros.



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