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Re: m68k does not build on head


>          ../../../gcc-head-test/libiberty/regex.c: In function
> 'byte_common_op_match_null_string_p':
>
> ../../../gcc-head-test/libiberty/regex.c:7724: error: insn does not
> satisfy its constraints:
>                      (insn 158 85 159 8
> ../../../gcc-head-test/libiberty/regex.c:7699 (set (reg:SI 2 %d2)
>
>        (sign_extend:SI (reg:HI 1 %d1 [59]))) 65 {*68k_extendhisi2} (nil)
>            (nil))
>                 ../../../gcc-head-test/libiberty/regex.c:7724: internal
> compiler error: in reload_cse_simplify_operands, at postreload.c:393

I'm also seeing this on m68-elf.

It appears to have been caused by the following patch (r106804)

2005-11-12  Hans-Peter Nilsson  <hp@axis.com>

       PR middle-end/24750
       * reload.c (find_reloads_address_1) <case TRUNCATE, SIGN_EXTEND,
       ZERO_EXTEND>: New cases.


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