Disable specific function call optimization
Wed Apr 19 14:28:00 GMT 2017
(I'm working on 32-bit arm in case it matters.)
There's an obvious optimization, when a function ends with
a function call, to issue a jump instead of a call.
Thus, upon return from the leaf function, we avoid a return
instruction. My problem is that this optimization breaks
tools that print function back traces :-)
I would guess the optimization is enabled by -foptimize-sibling-calls
So -fno-optimize-sibling-calls would disable it?
More information about the Gcc-help