[Bug target/11092] [3.4 Regression] [altivec] ICE:unrecognizable insn (vector constant)

["pinskia at physics dot uc dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11092



------- Additional Comments From pinskia@physics.uc.edu  2003-06-16 21:47 -------
I think the regression was caused by this patch which causes constant vector generated by one 
instruction instead of in the const pool:
2003-02-31  Aldy Hernandez  <aldyh@redhat.com>

        * testsuite/gcc.c-torture/execute/simd-3.c: New.

        * expr.c (expand_expr): Handle VECTOR_CST.
        (const_vector_from_tree): New.

        * varasm.c (output_constant): Handle VECTOR_CST.

        * c-typeck.c (digest_init): Build a vector constant from a
        VECTOR_TYPE.

        * config/rs6000/rs6000.c: Remove prototype for  
        easy_vector_constant.
        (easy_vector_constant): Add mode parameter.  Rewrite to handle 
        more easy constants.
        (rs6000_emit_move): Pass mode to easy_vector_constant. 
        Call emit_easy_vector_insn for SPE V2SI vector constant moves.
        (emit_easy_vector_insn): New.
        (easy_vector_same): New.
        (EASY_VECTOR_15): New macro.
        (EASY_VECTOR_15_ADD_SELF): New macro.
        (bdesc_2arg): Rename to xorv2si3.
        (easy_vector_constant_add_self): New.
        (input_operand): Allow vector constants.

        * config/rs6000/rs6000.h (PREDICATE_CODES): Add
        easy_vector_constant, easy_vector_constant_add_self.
        (EXTRA_CONSTRAINT): Add 'W'.

        * config/rs6000/rs6000-protos.h: Add prototype for
        easy_vector_constant, emit_easy_vector_insn.

        * config/rs6000/altivec.md (xorv8hi3): New.
        (xorv16qi3): New.
        Remove all _const0 patterns.
        (movv4si_internal): Rewrite to use code.  Add vector constant to
        vector alternative.  Add splitter.
        (movv8hi_internal): Same.
        (movv16qi_internal): Same.
        (movv4sf_internal): Same.
        Change the unspecs for vspltis* to use constants.

        * config/rs6000/spe.md ("xorv4hi3"): New.
        ("spe_evxor"): Rename to xorv2si3.
        ("xorv1di3"): New.
        Remove all _const0 patterns.
        (movv2si_internal): Rewrite to use code.  Add vector constant to
        alternatives.  Add splitter.
        (movv4hi_internal): Add vector constant to alternatives.
        (movv1di_internal): Same.
        (movv2sf_internal): Same.