[Bug tree-optimization/96108] Different behavior in DSE pass

2020-07-08 Thread 499537630 at qq dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96108 --- Comment #6 from Jolyon <499537630 at qq dot com> --- I agree that we really can't do this in the test. GCC's inconsistencies with this behavior are beyond the developers' consideration(the behavior of DSE pass). I tr

[Bug tree-optimization/96108] Different behavior in DSE pass

2020-07-08 Thread 499537630 at qq dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96108 --- Comment #2 from Jolyon <499537630 at qq dot com> --- (In reply to Andrew Pinski from comment #1) > Did it only change when a is uninitialized or was this a reduction of a > bigger code and you reduced it too far? Or you could fix

[Bug c/96108] New: Different behavior in DSE pass

2020-07-08 Thread 499537630 at qq dot com
Assignee: unassigned at gcc dot gnu.org Reporter: 499537630 at qq dot com Target Milestone: --- There are different behavior in DSE pass between gcc10 and gcc7.3. BUT I do not known the correctness of dse_classify_store. In gcc7.3, we could get DSE_STORE_DEAD when we get