https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109395
--- Comment #4 from Jakub Łukasiewicz <dev at joren dot ga> --- (In reply to Andrew Pinski from comment #3) > (In reply to Jakub Łukasiewicz from comment #2) > > Passing `-ftree-vrp` doesn't activate it either > > Because of another part of the documentation: > https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#Optimize-Options > > Most optimizations are completely disabled at -O0 or if an -O level is not > set on the command line, even if individual optimization flags are > specified. Similarly, -Og suppresses many optimization passes. So there is not way of detecting automatic VLA in "debug release"?
