On 27/06/19 17:43, Markus Armbruster wrote: > The fine manual advises: > > '-O0' > Reduce compilation time and make debugging produce the expected > results. This is the default. > [...] > '-Og' > Optimize debugging experience. '-Og' should be the optimization > level of choice for the standard edit-compile-debug cycle, offering > a reasonable level of optimization while maintaining fast > compilation and a good debugging experience. It is a better choice > than '-O0' for producing debuggable code because some compiler > passes that collect debug information are disabled at '-O0'. > > Our configure --enable-debug effectively picks -O0. Should it pick -Og > instead? >
commit 48e56d503e18bd1e8a75463fd7cc1580bf7e7650 Author: Paolo Bonzini <pbonz...@redhat.com> Date: Tue Mar 6 11:32:44 2018 +0100 Revert "build-sys: compile with -Og or -O1 when --enable-debug" This reverts commit 906548689e37ab6cca1e93b3f8d9327a4e17e8af. Even with -Og, the debug experience is noticeably worse because gdb shows a lot more "<optimised out>" variables and function arguments. Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> :( Paolo