[llvm-bugs] [Bug 33965] New: compute_schedule: Invaliad write

Thu Jul 27 12:18:49 PDT 2017

https://bugs.llvm.org/show_bug.cgi?id=33965

            Bug ID: 33965
           Summary: compute_schedule: Invaliad write
           Product: Polly
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: isl
          Assignee: polly-dev at googlegroups.com
          Reporter: llvm at meinersbur.de
                CC: llvm-bugs at lists.llvm.org

Created attachment 18866
  --> https://bugs.llvm.org/attachment.cgi?id=18866&action=edit
symm_0.ll

The attached test case segfault while isl computes a schedule.

$ bin/opt  -polly-process-unprofitable    -polly-opt-isl -S < symm_0.ll
Segmentation fault (core dumped)

Valgrind memcheck report:
$ valgrind bin/opt  -polly-process-unprofitable -polly-opt-isl -S < symm_0.ll
==22670== Memcheck, a memory error detector
==22670== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==22670== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==22670== Command: bin/opt -polly-process-unprofitable -polly-remarks-minimal
-polly-use-llvm-names
-polly-import-jscop-dir=/mnt/c/Users/Meinersbur/src/llvm/tools/polly/test
-polly-opt-isl -S
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF90C: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91BF0: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267cc is 4 bytes before an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF916: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91BF0: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267d0 is 0 bytes inside an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF90C: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91C48: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267bc is 20 bytes before an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF916: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91C48: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267c0 is 16 bytes before an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF90C: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91C70: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267c4 is 12 bytes before an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF916: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91C70: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267c8 is 8 bytes before an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF90C: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91C95: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267e4 is 20 bytes inside an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF916: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91C95: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267e8 is 24 bytes inside an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF90C: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91CE6: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267d4 is 4 bytes inside an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF916: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91CE6: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267d8 is 8 bytes inside an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF90C: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91D07: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267dc is 12 bytes inside an unallocated block of size
79,888 in arena "client"
==22670==
==22670== Invalid write of size 4
==22670==    at 0x1CFF916: isl_dim_map_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C91D07: inter_dim_map.isra.31 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95E91: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==  Address 0x6d267e0 is 16 bytes inside an unallocated block of size
79,888 in arena "client"
==22670==
--22670-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) -
exiting
--22670-- si_code=1;  Faulting address: 0x306D267B0;  sp: 0x804515e00

valgrind: the 'impossible' happened:
   Killed by fatal signal

host stacktrace:
==22670==    at 0x38090281: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==22670==    by 0x380920F5: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==22670==    by 0x38050E84: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==22670==    by 0x38051056: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==22670==    by 0x380D4F7B: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==22670==    by 0x380E3946: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)

sched status:
  running_tid=1

Thread 1: status = VgTs_Runnable (lwpid 22670)
==22670==    at 0x4C2DB8F: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==22670==    by 0x1BE75C1: isl_malloc_or_die (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1CA481D: isl_space_alloc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1CA4C75: isl_space_dup (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA9123: isl_space_drop_dims (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1CA9A67: isl_space_range (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C95C58: lp_add_inter (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1CA1FE0: isl_basic_set_list_foreach (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C907C3: setup_carry_lp (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C97E5C: carry (in /root/build/llvm/release/bin/opt)
==22670==    by 0x1C9871A: compute_schedule_finish_band (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C99CE1: compute_schedule_wcc (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C577: compute_component_schedule.constprop.58 (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x1C9C8CD: isl_schedule_constraints_compute_schedule (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x168B05B: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) [clone .part.105]
[clone .constprop.156] (in /root/build/llvm/release/bin/opt)
==22670==    by 0x168C2D0: (anonymous
namespace)::IslScheduleOptimizer::runOnScop(polly::Scop&) (in
/root/build/llvm/release/bin/opt)
==22670==    by 0xAEB7A2: llvm::RGPassManager::runOnFunction(llvm::Function&)
(in /root/build/llvm/release/bin/opt)
==22670==    by 0xFB8AE2: llvm::FPPassManager::runOnFunction(llvm::Function&)
(in /root/build/llvm/release/bin/opt)
==22670==    by 0xFB8BAB: llvm::FPPassManager::runOnModule(llvm::Module&) (in
/root/build/llvm/release/bin/opt)
==22670==    by 0xFB864C: llvm::legacy::PassManagerImpl::run(llvm::Module&) (in
/root/build/llvm/release/bin/opt)
==22670==    by 0x6C3B3B: main (in /root/build/llvm/release/bin/opt)

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