https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92539
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
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CC| |law at redhat dot com
--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
Am I reading the .einline dump wrong? It looks to me like early inlining
totally mucked up the saving of the "first" in eat_two when everything gets
inlined into main. The net result is we advance further through the input
array than we're supposed to.
;; basic block 5, loop depth 1, maybe hot
;; prev block 4, next block 6, flags: (NEW, REACHABLE, VISITED)
;; pred: 3 [11.0% (guessed)] (TRUE_VALUE,EXECUTABLE)
;; 8 [always] (FALLTHRU,DFS_BACK,EXECUTABLE)
# i_7 = PHI <0(3), i_12(8)>
# local_iterator_8 = PHI <"aa"(3), _11(8)>
if (i_7 == 3)
goto <bb 9>; [25.00%]
else
goto <bb 6>; [75.00%]
;; succ: 9 [25.0% (guessed)] (TRUE_VALUE,EXECUTABLE)
;; 6 [75.0% (guessed)] (FALSE_VALUE,EXECUTABLE)
;; basic block 6, loop depth 1, maybe hot
;; prev block 5, next block 7, flags: (NEW, REACHABLE, VISITED)
;; pred: 5 [75.0% (guessed)] (FALSE_VALUE,EXECUTABLE)
if (last_3 != local_iterator_8)
goto <bb 7>; [54.59%]
else
goto <bb 9>; [45.41%]
;; succ: 7 [54.6% (guessed)] (TRUE_VALUE,EXECUTABLE)
;; 9 [45.4% (guessed)] (FALSE_VALUE,EXECUTABLE)
;; basic block 7, loop depth 1, maybe hot
;; prev block 6, next block 8, flags: (NEW, REACHABLE, VISITED)
;; pred: 6 [54.6% (guessed)] (TRUE_VALUE,EXECUTABLE)
_10 = local_iterator_8 + 1;
if (last_3 != _10)
goto <bb 8>; [54.59%]
else
goto <bb 9>; [45.41%]
;; succ: 8 [54.6% (guessed)] (TRUE_VALUE,EXECUTABLE)
;; 9 [45.4% (guessed)] (FALSE_VALUE,EXECUTABLE)
;; basic block 8, loop depth 1, maybe hot
;; prev block 7, next block 9, flags: (NEW, REACHABLE, VISITED)
;; pred: 7 [54.6% (guessed)] (TRUE_VALUE,EXECUTABLE)
_11 = &MEM <const char> [(void *)local_iterator_8 + 2B];
i_12 = i_7 + 1;
goto <bb 5>; [100.00%]
