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* [Bug rtl-optimization/10050] ifcvt is not smart enough [not found] <bug-10050-4@http.gcc.gnu.org/bugzilla/> @ 2012-02-07 21:05 ` pinskia at gcc dot gnu.org 2023-05-26 1:01 ` [Bug middle-end/10050] " pinskia at gcc dot gnu.org 1 sibling, 0 replies; 2+ messages in thread From: pinskia at gcc dot gnu.org @ 2012-02-07 21:05 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10050 --- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-07 21:05:24 UTC --- Note this optimized I think is invalid with the C11/C++11 memory model. ^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug middle-end/10050] ifcvt is not smart enough [not found] <bug-10050-4@http.gcc.gnu.org/bugzilla/> 2012-02-07 21:05 ` [Bug rtl-optimization/10050] ifcvt is not smart enough pinskia at gcc dot gnu.org @ 2023-05-26 1:01 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 2+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-05-26 1:01 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=10050 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|rtl-optimization |middle-end --- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note for func2 we get: if (flag.0_2 != 0) goto <bb 4>; [50.00%] else goto <bb 3>; [50.00%] <bb 3> [local count: 536870912]: pretmp_18 = *a_10(D); pretmp_20 = MEM[(int *)a_10(D) + 4B]; goto <bb 5>; [100.00%] <bb 4> [local count: 536870913]: *a_10(D) = _9; MEM[(int *)a_10(D) + 4B] = _1; <bb 5> [local count: 1073741824]: # prephitmp_19 = PHI <pretmp_18(3), _9(4)> # prephitmp_21 = PHI <pretmp_20(3), _1(4)> the conditional stores are correct if not supplying -fallow-store-data-races . Now GCC does not optimize this even with -fallow-store-data-races but maybe it could. ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2023-05-26 1:01 UTC | newest] Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <bug-10050-4@http.gcc.gnu.org/bugzilla/> 2012-02-07 21:05 ` [Bug rtl-optimization/10050] ifcvt is not smart enough pinskia at gcc dot gnu.org 2023-05-26 1:01 ` [Bug middle-end/10050] " pinskia at gcc dot gnu.org
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