[Bug rtl-optimization/18420] [4.0 Regression] ICE compiling mesa at -O2

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-11 
00:34 -------
Found the patch which caused the problem:
        * simplify-rtx.c (simplify_gen_subreg): Fail if simplify_subreg
        has failed when passed a hard register.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18420