https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98922
Bug ID: 98922
Summary: -fstack-usage not working with -flto
Product: gcc
Version: 8.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: Visda.vokhshoori at microchip dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
With link time optimization, -flto, the compiler doesn't print the stack usage
information to auxname.su file.
With -flto, the compiler dumps the stack usage of each function in
sourcfile/auxname.ltrans0.ltrans.su file.
However, maybe_unlink() in lto_wrapper.c removes all trans files, unless
--save-temps is specified.
To reproduce:
You can modify "gcc.dg/stack-usage-1.c": test case source to call foo() in
main(), and compile and link with flto and fstack-usage options, and scan for {
dg-final { scan-stack-usage "foo\t\(0\)\tstatic" } }
The scan will fail.
