From: "wcohen at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/25549] Systemtap unable to find many probe points available in code compiled with LTO enable
Date: Fri, 01 May 2020 18:31:45 +0000 [thread overview]
Message-ID: <bug-25549-6586-ifX2ad4w1X@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-25549-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=25549
--- Comment #1 from William Cohen <wcohen at redhat dot com> ---
Created attachment 12499
--> https://sourceware.org/bugzilla/attachment.cgi?id=12499&action=edit
Much smaller reproduer example
This very small example demonstrates the problem. When -flto is enabled no
probeable lines listed. Remove -flto and systemtap is able to list the two
lines of executable code:
$ g++ -o pr25549 -g -O2 -flto pr25549.cxx
$ ~/research/profiling/systemtap_write/install/bin/stap -L
'process("./pr25549").statement("main@*:*")'
$ g++ -o pr25549 -g -O2 pr25549.cxx
$ ~/research/profiling/systemtap_write/install/bin/stap -L
'process("./pr25549").statement("main@*:*")'
process("/home/wcohen/rpmbuild/BUILDROOT/pr25549").statement("main@/home/wcohen/rpmbuild/BUILDROOT/pr25549.cxx:4")
$argc:int $argv:char**
process("/home/wcohen/rpmbuild/BUILDROOT/pr25549").statement("main@/home/wcohen/rpmbuild/BUILDROOT/pr25549.cxx:6")
$argc:int $argv:char**
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next prev parent reply other threads:[~2020-05-01 18:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 15:40 [Bug translator/25549] New: " wcohen at redhat dot com
2020-05-01 18:31 ` wcohen at redhat dot com [this message]
2020-05-04 20:18 ` [Bug translator/25549] " wcohen at redhat dot com
2020-05-05 15:41 ` wcohen at redhat dot com
2020-05-05 20:49 ` woodard at redhat dot com
2020-05-07 2:06 ` fche at redhat dot com
2020-05-07 3:26 ` mark at klomp dot org
2020-05-07 10:27 ` fche at redhat dot com
2020-05-07 10:28 ` fche at redhat dot com
2020-05-07 11:36 ` mark at klomp dot org
2020-05-07 13:58 ` wcohen at redhat dot com
2020-05-07 17:55 ` wcohen at redhat dot com
2020-05-08 10:15 ` mark at klomp dot org
2020-05-08 14:02 ` wcohen at redhat dot com
2020-05-08 17:25 ` mark at klomp dot org
2020-05-08 20:07 ` wcohen at redhat dot com
2020-07-10 3:00 ` fche at redhat dot com
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