Peter Maydell <peter.mayd...@linaro.org> writes: > On 16 January 2018 at 14:16, Paolo Bonzini <pbonz...@redhat.com> wrote: >> From: Marc-André Lureau <marcandre.lur...@redhat.com> >> >> When --enable-debug is turned on, configure doesn't set -O level, and >> uses default compiler -O0 level, which is slow. >> >> Instead, use -Og if supported by the compiler (optimize debugging >> experience), or -O1 (keeps code somewhat debuggable and works around >> compiler bugs). > > This gives me a noticeably worse debug experience (using -Og), > because gdb shows a lot more "<optimised out>" variables and > function arguments. (I've been mildly irritated by this for > the last few weeks and only just figured out why this was > happening.)
I was wondering why my: ./configure --enable-debug --enable-debug-tcg --extra-cflags="-O0 -g3" --target-list=aarch64-linux-user builds where showing that. > Can we go back to the previous behaviour, please ? I don't > care if the build is slow if I'm debugging, but I really do > care that I don't have my variables and arguments all > optimised away by the compiler so I can't tell what's going on. +1 There is a lot of other stuff enabled when debugging which slows stuff down anyway. -- Alex Bennée
