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* [TCWG CI] 444.namd grew in size by 2% after gcc: middle-end/101480 - overloaded global new/delete
@ 2021-11-12 22:46 ci_notify
0 siblings, 0 replies; 2+ messages in thread
From: ci_notify @ 2021-11-12 22:46 UTC (permalink / raw)
To: Richard Biener; +Cc: gcc-regression
After gcc commit 19dcea67ac40cfdeb396fa264ebbe04fbe61fdc0
Author: Richard Biener <rguenther@suse.de>
middle-end/101480 - overloaded global new/delete
the following benchmarks grew in size by more than 1%:
- 444.namd grew in size by 2% from 187543 to 191043 bytes
Below reproducer instructions can be used to re-build both "first_bad" and "last_good" cross-toolchains used in this bisection. Naturally, the scripts will fail when triggerring benchmarking jobs if you don't have access to Linaro TCWG CI.
For your convenience, we have uploaded tarballs with pre-processed source and assembly files at:
- First_bad save-temps: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/build-19dcea67ac40cfdeb396fa264ebbe04fbe61fdc0/save-temps/
- Last_good save-temps: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/build-580d66f5a0bdcd88dcdab2d4ace3bbbaae121af3/save-temps/
- Baseline save-temps: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/build-baseline/save-temps/
Configuration:
- Benchmark: SPEC CPU2006
- Toolchain: GCC + Glibc + GNU Linker
- Version: all components were built from their latest release branch
- Target: aarch64-linux-gnu
- Compiler flags: -Os
- Hardware: APM Mustang 8x X-Gene1
This benchmarking CI is work-in-progress, and we welcome feedback and suggestions at linaro-toolchain@lists.linaro.org . In our improvement plans is to add support for SPEC CPU2017 benchmarks and provide "perf report/annotate" data behind these reports.
THIS IS THE END OF INTERESTING STUFF. BELOW ARE LINKS TO BUILDS, REPRODUCTION INSTRUCTIONS, AND THE RAW COMMIT.
This commit has regressed these CI configurations:
- tcwg_bmk_gnu_apm/gnu-release-aarch64-spec2k6-Os
First_bad build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/build-19dcea67ac40cfdeb396fa264ebbe04fbe61fdc0/
Last_good build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/build-580d66f5a0bdcd88dcdab2d4ace3bbbaae121af3/
Baseline build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/build-baseline/
Even more details: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/
Reproduce builds:
<cut>
mkdir investigate-gcc-19dcea67ac40cfdeb396fa264ebbe04fbe61fdc0
cd investigate-gcc-19dcea67ac40cfdeb396fa264ebbe04fbe61fdc0
# Fetch scripts
git clone https://git.linaro.org/toolchain/jenkins-scripts
# Fetch manifests and test.sh script
mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/manifests/build-baseline.sh --fail
curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/manifests/build-parameters.sh --fail
curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-release-aarch64-spec2k6-Os/1/artifact/artifacts/test.sh --fail
chmod +x artifacts/test.sh
# Reproduce the baseline build (build all pre-requisites)
./jenkins-scripts/tcwg_bmk-build.sh @@ artifacts/manifests/build-baseline.sh
# Save baseline build state (which is then restored in artifacts/test.sh)
mkdir -p ./bisect
rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/
cd gcc
# Reproduce first_bad build
git checkout --detach 19dcea67ac40cfdeb396fa264ebbe04fbe61fdc0
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach 580d66f5a0bdcd88dcdab2d4ace3bbbaae121af3
../artifacts/test.sh
cd ..
</cut>
Full commit (up to 1000 lines):
<cut>
commit 19dcea67ac40cfdeb396fa264ebbe04fbe61fdc0
Author: Richard Biener <rguenther@suse.de>
Date: Mon Oct 11 16:06:03 2021 +0200
middle-end/101480 - overloaded global new/delete
The following fixes the issue of ignoring side-effects on memory
from overloaded global new/delete operators by not marking them
as effectively 'const' apart from other explicitely specified
side-effects.
This will cause
FAIL: g++.dg/warn/Warray-bounds-16.C -std=gnu++1? (test for excess errors)
because we now no longer statically see the initialization loop
never executes because the call to operator new can now clobber 'a.m'.
This seems to be an issue with the warning code and/or ranger so
I'm leaving this FAIL to be addressed as followup.
2021-10-11 Richard Biener <rguenther@suse.de>
PR middle-end/101480
* gimple.c (gimple_call_fnspec): Do not mark operator new/delete
as const.
* g++.dg/torture/pr10148.C: New testcase.
(cherry picked from commit 09a0affdb0598a54835ac4bb0dd6b54122c12916)
---
gcc/gimple.c | 4 +--
gcc/testsuite/g++.dg/torture/pr10148.C | 52 ++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+), 2 deletions(-)
diff --git a/gcc/gimple.c b/gcc/gimple.c
index c6f7c2d4900..61126cf94b3 100644
--- a/gcc/gimple.c
+++ b/gcc/gimple.c
@@ -1516,12 +1516,12 @@ gimple_call_fnspec (const gcall *stmt)
&& DECL_IS_OPERATOR_DELETE_P (fndecl)
&& DECL_IS_REPLACEABLE_OPERATOR (fndecl)
&& gimple_call_from_new_or_delete (stmt))
- return ".co ";
+ return ". o ";
/* Similarly operator new can be treated as malloc. */
if (fndecl
&& DECL_IS_REPLACEABLE_OPERATOR_NEW_P (fndecl)
&& gimple_call_from_new_or_delete (stmt))
- return "mC";
+ return "m ";
return "";
}
diff --git a/gcc/testsuite/g++.dg/torture/pr10148.C b/gcc/testsuite/g++.dg/torture/pr10148.C
new file mode 100644
index 00000000000..ed278f9f8d8
--- /dev/null
+++ b/gcc/testsuite/g++.dg/torture/pr10148.C
@@ -0,0 +1,52 @@
+/* { dg-do run } */
+
+#include <stdlib.h>
+#include <assert.h>
+
+static bool flag = false;
+
+class C
+{
+ bool prev;
+
+public:
+ C() : prev(flag)
+ {
+ flag = true;
+ }
+
+ ~C() {
+ flag = prev;
+ }
+};
+
+void* operator new(size_t size)
+{
+ assert(flag);
+ return malloc(size);
+}
+
+void operator delete(void *p)
+{
+ free(p);
+}
+
+void g(int* p)
+{
+ delete p;
+}
+
+void f()
+{
+ int* p;
+ {
+ C c;
+ p = new int;
+ }
+ g(p);
+}
+
+int main(int, char**)
+{
+ f();
+}
</cut>
>From hjl@sc.intel.com Sat Nov 13 00:05:09 2021
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Date: Fri, 12 Nov 2021 16:05:05 -0800
To: skpgkp2@gmail.com, hjl.tools@gmail.com, gcc-regression@gcc.gnu.org
Subject: Regressions on master at commit r12-5215 vs commit r12-5198 on
Linux/x86_64
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New failures:
FAIL: g++.dg/pr98499.C -std=gnu++14 execution test
FAIL: g++.dg/pr98499.C -std=gnu++14 execution test
FAIL: g++.dg/pr98499.C -std=gnu++14 execution test
FAIL: g++.dg/pr98499.C -std=gnu++17 execution test
FAIL: g++.dg/pr98499.C -std=gnu++17 execution test
FAIL: g++.dg/pr98499.C -std=gnu++17 execution test
FAIL: g++.dg/pr98499.C -std=gnu++2a execution test
FAIL: g++.dg/pr98499.C -std=gnu++2a execution test
FAIL: g++.dg/pr98499.C -std=gnu++2a execution test
FAIL: g++.dg/pr98499.C -std=gnu++98 execution test
FAIL: g++.dg/pr98499.C -std=gnu++98 execution test
FAIL: g++.dg/pr98499.C -std=gnu++98 execution test
New passes:
FAIL: 18_support/nested_exception/rethrow_if_nested.cc (test for excess errors)
FAIL: 18_support/nested_exception/rethrow_if_nested.cc (test for excess errors)
FAIL: 18_support/nested_exception/rethrow_if_nested.cc (test for excess errors)
FAIL: 20_util/variant/run.cc (test for excess errors)
FAIL: 20_util/variant/run.cc (test for excess errors)
FAIL: 20_util/variant/run.cc (test for excess errors)
FAIL: std/ranges/adaptors/join.cc (test for excess errors)
^ permalink raw reply [flat|nested] 2+ messages in thread
* [TCWG CI] 444.namd grew in size by 2% after gcc: middle-end/101480 - overloaded global new/delete
@ 2021-10-12 22:48 ci_notify
0 siblings, 0 replies; 2+ messages in thread
From: ci_notify @ 2021-10-12 22:48 UTC (permalink / raw)
To: Richard Biener; +Cc: gcc-regression
After gcc commit 09a0affdb0598a54835ac4bb0dd6b54122c12916
Author: Richard Biener <rguenther@suse.de>
middle-end/101480 - overloaded global new/delete
the following benchmarks grew in size by more than 1%:
- 444.namd grew in size by 2% from 187631 to 191179 bytes
Below reproducer instructions can be used to re-build both "first_bad" and "last_good" cross-toolchains used in this bisection. Naturally, the scripts will fail when triggerring benchmarking jobs if you don't have access to Linaro TCWG CI.
For your convenience, we have uploaded tarballs with pre-processed source and assembly files at:
- First_bad save-temps: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/build-09a0affdb0598a54835ac4bb0dd6b54122c12916/save-temps/
- Last_good save-temps: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/build-a40970cf043553f0ca09a3b7be1c5a949623d915/save-temps/
- Baseline save-temps: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/build-baseline/save-temps/
Configuration:
- Benchmark: SPEC CPU2006
- Toolchain: GCC + Glibc + GNU Linker
- Version: all components were built from their tip of trunk
- Target: aarch64-linux-gnu
- Compiler flags: -Os
- Hardware: APM Mustang 8x X-Gene1
This benchmarking CI is work-in-progress, and we welcome feedback and suggestions at linaro-toolchain@lists.linaro.org . In our improvement plans is to add support for SPEC CPU2017 benchmarks and provide "perf report/annotate" data behind these reports.
THIS IS THE END OF INTERESTING STUFF. BELOW ARE LINKS TO BUILDS, REPRODUCTION INSTRUCTIONS, AND THE RAW COMMIT.
This commit has regressed these CI configurations:
- tcwg_bmk_gnu_apm/gnu-master-aarch64-spec2k6-Os
First_bad build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/build-09a0affdb0598a54835ac4bb0dd6b54122c12916/
Last_good build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/build-a40970cf043553f0ca09a3b7be1c5a949623d915/
Baseline build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/build-baseline/
Even more details: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/
Reproduce builds:
<cut>
mkdir investigate-gcc-09a0affdb0598a54835ac4bb0dd6b54122c12916
cd investigate-gcc-09a0affdb0598a54835ac4bb0dd6b54122c12916
# Fetch scripts
git clone https://git.linaro.org/toolchain/jenkins-scripts
# Fetch manifests and test.sh script
mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/manifests/build-baseline.sh --fail
curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/manifests/build-parameters.sh --fail
curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_apm-gnu-master-aarch64-spec2k6-Os/4/artifact/artifacts/test.sh --fail
chmod +x artifacts/test.sh
# Reproduce the baseline build (build all pre-requisites)
./jenkins-scripts/tcwg_bmk-build.sh @@ artifacts/manifests/build-baseline.sh
# Save baseline build state (which is then restored in artifacts/test.sh)
mkdir -p ./bisect
rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/
cd gcc
# Reproduce first_bad build
git checkout --detach 09a0affdb0598a54835ac4bb0dd6b54122c12916
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach a40970cf043553f0ca09a3b7be1c5a949623d915
../artifacts/test.sh
cd ..
</cut>
Full commit (up to 1000 lines):
<cut>
commit 09a0affdb0598a54835ac4bb0dd6b54122c12916
Author: Richard Biener <rguenther@suse.de>
Date: Mon Oct 11 16:06:03 2021 +0200
middle-end/101480 - overloaded global new/delete
The following fixes the issue of ignoring side-effects on memory
from overloaded global new/delete operators by not marking them
as effectively 'const' apart from other explicitely specified
side-effects.
This will cause
FAIL: g++.dg/warn/Warray-bounds-16.C -std=gnu++1? (test for excess errors)
because we now no longer statically see the initialization loop
never executes because the call to operator new can now clobber 'a.m'.
This seems to be an issue with the warning code and/or ranger so
I'm leaving this FAIL to be addressed as followup.
2021-10-11 Richard Biener <rguenther@suse.de>
PR middle-end/101480
* gimple.c (gimple_call_fnspec): Do not mark operator new/delete
as const.
* g++.dg/torture/pr10148.C: New testcase.
---
gcc/gimple.c | 4 +--
gcc/testsuite/g++.dg/torture/pr10148.C | 52 ++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+), 2 deletions(-)
diff --git a/gcc/gimple.c b/gcc/gimple.c
index bed7ff9e71c..cc7a88e822b 100644
--- a/gcc/gimple.c
+++ b/gcc/gimple.c
@@ -1549,12 +1549,12 @@ gimple_call_fnspec (const gcall *stmt)
&& DECL_IS_OPERATOR_DELETE_P (fndecl)
&& DECL_IS_REPLACEABLE_OPERATOR (fndecl)
&& gimple_call_from_new_or_delete (stmt))
- return ".co ";
+ return ". o ";
/* Similarly operator new can be treated as malloc. */
if (fndecl
&& DECL_IS_REPLACEABLE_OPERATOR_NEW_P (fndecl)
&& gimple_call_from_new_or_delete (stmt))
- return "mC";
+ return "m ";
return "";
}
diff --git a/gcc/testsuite/g++.dg/torture/pr10148.C b/gcc/testsuite/g++.dg/torture/pr10148.C
new file mode 100644
index 00000000000..ed278f9f8d8
--- /dev/null
+++ b/gcc/testsuite/g++.dg/torture/pr10148.C
@@ -0,0 +1,52 @@
+/* { dg-do run } */
+
+#include <stdlib.h>
+#include <assert.h>
+
+static bool flag = false;
+
+class C
+{
+ bool prev;
+
+public:
+ C() : prev(flag)
+ {
+ flag = true;
+ }
+
+ ~C() {
+ flag = prev;
+ }
+};
+
+void* operator new(size_t size)
+{
+ assert(flag);
+ return malloc(size);
+}
+
+void operator delete(void *p)
+{
+ free(p);
+}
+
+void g(int* p)
+{
+ delete p;
+}
+
+void f()
+{
+ int* p;
+ {
+ C c;
+ p = new int;
+ }
+ g(p);
+}
+
+int main(int, char**)
+{
+ f();
+}
</cut>
>From hjl@sc.intel.com Tue Oct 12 23:02:11 2021
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Date: Tue, 12 Oct 2021 16:02:05 -0700
To: skpgkp2@gmail.com, hjl.tools@gmail.com, gcc-regression@gcc.gnu.org
Subject: Regressions on master at commit r12-4359 vs commit r12-4351 on
Linux/i686
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New failures:
FAIL: g++.dg/modules/xtreme-tr1_b.C -std=c++2b (internal compiler error)
FAIL: g++.dg/modules/xtreme-tr1_b.C -std=c++2b (test for excess errors)
New passes:
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