[Bug tree-optimization/88732] different results on -O0 and -O1, -O2, -O3, -Os

2019-01-06 Thread amocywang at gmail dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88732 --- Comment #2 from Amos Wang --- (In reply to Marc Glisse from comment #1) > Why not read the documentation for that function? > "If x is 0, the result is undefined." Why the results are different at different optimizing optionss? If it's an un

[Bug tree-optimization/88732] New: different results on -O0 and -O1, -O2, -O3, -Os

2019-01-06 Thread amocywang at gmail dot com
: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: amocywang at gmail dot com Target Milestone: --- > $ gcc