[Bug rtl-optimization/37889] [4.3/4.4 Regression] SEGV, conditional execution proactively executed the false arm.

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2008-10-22 16:28 -------
If the array has known bounds, we could say that accesses above bounds trap
and likely it wouldn't hurt much.  But for
extern const char *reg_names[];
where we don't know the bounds, we'd have to assume the worst, i.e. that all
indexes may trap.  I'm afraid that's going to penalize quite some code.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37889