https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82965
--- Comment #7 from amker at gcc dot gnu.org ---
While I am understanding the issue. The dump of ifcvt pass is as below:
;; basic block 2, loop depth 0, count 118111601 (estimated locally), maybe
hot
;; prev block 0, next block 3, flags: (NEW, REACHABLE, VISITED)
;; pred: ENTRY [always] count:118111601 (estimated locally)
(FALLTHRU,EXECUTABLE)
# VUSE <.MEM_12(D)>
c.1_17 = cD.1595;
if (c.1_17 > 0)
goto <bb 3>; [89.00%]
else
goto <bb 5>; [11.00%]
;; succ: 3 [89.0% (guessed)] count:105119325 (estimated locally)
(TRUE_VALUE,EXECUTABLE)
;; 5 [11.0% (guessed)] count:12992276 (estimated locally)
(FALSE_VALUE,EXECUTABLE)
;; basic block 3, loop depth 0, count 105119325 (estimated locally), maybe
hot
;; prev block 2, next block 4, flags: (NEW, REACHABLE, VISITED)
;; pred: 2 [89.0% (guessed)] count:105119325 (estimated locally)
(TRUE_VALUE,EXECUTABLE)
# VUSE <.MEM_12(D)>
;;...
;; succ: 4 [always] count:105119325 (estimated locally)
(FALLTHRU,EXECUTABLE)
;; basic block 4, loop depth 1, count 955630224 (estimated locally), maybe
hot
;; prev block 3, next block 6, flags: (NEW, REACHABLE, VISITED)
;; pred: 3 [always] count:105119325 (estimated locally)
(FALLTHRU,EXECUTABLE)
;; 6 [always] count:850510900 (estimated locally)
(FALLTHRU,DFS_BACK,EXECUTABLE)
# RANGE [0, 2147483647] NONZERO 2147483647
# i_18 = PHI <0(3), i_14(6)>
;;...
if (i_14 < c.1_17)
goto <bb 6>; [89.00%]
else
goto <bb 5>; [11.00%]
;; succ: 6 [89.0% (guessed)] count:850510900 (estimated locally)
(TRUE_VALUE,EXECUTABLE)
;; 5 [11.0% (guessed)] count:105119324 (estimated locally)
(FALSE_VALUE,EXECUTABLE)
;; basic block 6, loop depth 1, count 850510900 (estimated locally), maybe
hot
;; prev block 4, next block 5, flags: (NEW, VISITED)
;; pred: 4 [89.0% (guessed)] count:850510900 (estimated locally)
(TRUE_VALUE,EXECUTABLE)
goto <bb 4>; [100.00%]
;; succ: 4 [always] count:850510900 (estimated locally)
(FALLTHRU,DFS_BACK,EXECUTABLE)
;; basic block 5, loop depth 0, count 118111601 (estimated locally), maybe
hot
;; prev block 6, next block 1, flags: (NEW, REACHABLE, VISITED)
;; pred: 2 [11.0% (guessed)] count:12992276 (estimated locally)
(FALSE_VALUE,EXECUTABLE)
;; 4 [11.0% (guessed)] count:105119324 (estimated locally)
(FALSE_VALUE,EXECUTABLE)
;;...
return;
;; succ: EXIT [always (guessed)] count:118111601 (estimated locally)
Question is for edges <bb2, bb5> and <bb4, bb5> and local count as:
basic block 2, loop depth 0, count 118111601
basic block 4, loop depth 1, count 955630224
basic block 5, loop depth 0, count 118111601
Is count of bb5 is wrong?
