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From: "andi-gcc at firstfloor dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/113765] New: autofdo: val-profiler-threads-1.c
 compilation,  error: probability of edge from entry block not initialized
Date: Mon, 05 Feb 2024 11:47:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113765

            Bug ID: 113765
           Summary: autofdo: val-profiler-threads-1.c compilation,  error:
                    probability of edge from entry block not initialized
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: gcov-profile
          Assignee: unassigned at gcc dot gnu.org
          Reporter: andi-gcc at firstfloor dot org
  Target Milestone: ---

With recent trunk (019dc63819be)

When running the test suite on a Intel system with autofdo installed

Executing on host: /home/ak/gcc/obj-full/gcc/xgcc -B/home/ak/gcc/obj-full/g=
cc/=20
/home/ak/gcc/gcc/gcc/testsuite/gcc.dg/tree-prof/val-profiler-threads-1.c=20=
=20=20
-fdi
agnostics-plain-output   -O0 -pthread -fprofile-update=3Datomic
-fauto-profile=3D/home/ak/gcc/obj-full/gcc/testsuite/gcc20/afdo.val-profile=
r-threads-1.gcda
-DFOR_AU
TOFDO_TESTING -fearly-inlining -dumpbase-ext .x02  -lm  -o
/home/ak/gcc/obj-full/gcc/testsuite/gcc20/val-profiler-threads-1.x02=20=20=
=20
(timeout =3D 300)
spawn -ignore SIGHUP /home/ak/gcc/obj-full/gcc/xgcc
-B/home/ak/gcc/obj-full/gcc/
/home/ak/gcc/gcc/gcc/testsuite/gcc.dg/tree-prof/val-profiler-threads-1.c -f=
diag
nostics-plain-output -O0 -pthread -fprofile-update=3Datomic
-fauto-profile=3D/home/ak/gcc/obj-full/gcc/testsuite/gcc20/afdo.val-profile=
r-threads-1.gcda
-DFOR_AUTOFD
O_TESTING -fearly-inlining -dumpbase-ext .x02 -lm -o
/home/ak/gcc/obj-full/gcc/testsuite/gcc20/val-profiler-threads-1.x02
/home/ak/gcc/gcc/gcc/testsuite/gcc.dg/tree-prof/val-profiler-threads-1.c: In
function 'copy_memory':
/home/ak/gcc/gcc/gcc/testsuite/gcc.dg/tree-prof/val-profiler-threads-1.c:13=
:7:
error: probability of edge from entry block not initialized
/home/ak/gcc/gcc/gcc/testsuite/gcc.dg/tree-prof/val-profiler-threads-1.c:13=
:7:
error: probability of edge 2->4 not initialized
/home/ak/gcc/gcc/gcc/testsuite/gcc.dg/tree-prof/val-profiler-threads-1.c:13=
:7:
error: probability of edge 5->1 not initialized
during GIMPLE pass: fixup_cfg
/home/ak/gcc/gcc/gcc/testsuite/gcc.dg/tree-prof/val-profiler-threads-1.c:13=
:7:
internal compiler error: verify_flow_info failed
0xafb91e verify_flow_info()
        ../../gcc/gcc/cfghooks.cc:287
0xf0e8a7 execute_function_todo
        ../../gcc/gcc/passes.cc:2100
0xf0edde execute_todo
        ../../gcc/gcc/passes.cc:2142
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
compiler exited with status 1

I'm not attaching the source because it also needs the autofdo gcov file to
reproduce and the test case is already in tree.=