https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112559
Bug ID: 112559
Summary: The -fno-builtin option affects the instruction
generation of the program
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: mumuxi_ll at outlook dot com
Target Milestone: ---
Created attachment 56600
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56600&action=edit
C source code
Upon compiling a function, it was observed that adding the -fno-builtin option
resulted in the compilation of line 2795, where the set_head_size function in
the mEMALIGn function occurs. Without the -fno-builtin option, the
set_head_size does not appear in the assembly code. Does the gcc behavior
change when processing -fno-builtin?