https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118806
Bug ID: 118806
Summary: [avr] Optimize running main (-mo-call-main)
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: gjl at gcc dot gnu.org
Target Milestone: ---
Add a new command line option -mno-call-main that uses a more efficient way of
running main as provided by the startup code from libmcu.a
XCALL main
XJMP exit
Instead, main can be put in .init9 so no call is required to run it.
Specifying -mno-call-main asserts that main does not return.
This option is useful for devices with very limited resources.
