[Bug rtl-optimization/56005] [4.8 Regression] FAIL: gcc.target/i386/pr45352.c (internal compiler error)

[vmakarov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56005



--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> 2013-01-16 
16:39:21 UTC ---

(In reply to comment #1)

> See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55153#c4

> Let's close PR55153 as fixed and keep this PR to track the regression the fix

> caused.



Sorry, I forgot about selective scheduler which uses deps->readonly mechanism

for its own purposes.  The fix is really easy.  It is just adding an if-cond

when prefetch is added.





      if (!deps->readonly)

        add_insn_mem_dependence (deps, true, insn,

                                                     gen_rtx_MEM (Pmode, XEXP

(PATTERN (insn), 0)));



I'll submit the patch today.