[Bug rtl-optimization/17482] GCSE after reload replacing changing instructions

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2004-09-14 21:55 -------
It seems that we need to look at autoincrement in postreload gcse.  Before 
flow, there are no interesting autoincrements, but after reload, we do.  So I 
think that the bug is that we do not look for autoincs (either in the insn or 
via REG_INC notes) and mark regs appearing in them as modified in 
mark_oprs_set. 
 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17482