https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92424
Fangrui Song <i at maskray dot me> changed:
What |Removed |Added
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CC| |i at maskray dot me
--- Comment #8 from Fangrui Song <i at maskray dot me> ---
Where shall we place .cfi_startproc?
Clang HEAD (and clang 10)'s placement is:
foo:
.loc 1 3 0 # line number
.cfi_startproc # CFI
bti c
.Lpatch0: # __patchable_function_entries label
nop
Not placing .cfi_startproc (as GCC current does) will make addr2line on the
function entry address print ??:0
For M>0, clang does not attach line number information for NOPs before the
function entry label.
