[Linaro-TCWG-CI] basepoints/gcc-14-3999-g3c834d85f2e: FAIL: 1 regressions

[Linaro-TCWG-CI] basepoints/gcc-14-3999-g3c834d85f2e: FAIL: 1 regressions

[ci_notify]

[-- Attachment #1: Type: text/plain, Size: 2792 bytes --]

Dear contributor, our automatic CI has detected problems related to your patch(es).  Please find some details below.  If you have any questions, please follow up on linaro-toolchain@lists.linaro.org mailing list, Libera's #linaro-tcwg channel, or ping your favourite Linaro toolchain developer on the usual project channel.

In CI config tcwg_gcc_check/master-arm after:

  | commit basepoints/gcc-14-3999-g3c834d85f2e
  | Author: Vladimir N. Makarov <vmakarov@redhat.com>
  | Date:   Thu Sep 14 10:26:48 2023 -0400
  | 
  |     [RA]: Improve cost calculation of pseudos with equivalences
  |     
  |     RISCV target developers reported that RA can spill pseudo used in a
  |     loop although there are enough registers to assign.  It happens when
  |     the pseudo has an equivalence outside the loop and the equivalence is
  |     not merged into insns using the pseudo.  IRA sets up that memory cost
  |     to zero when the pseudo has an equivalence and it means that the
  | ... 18 lines of the commit log omitted.

FAIL: 1 regressions

regressions.sum:
		=== gcc tests ===

Running gcc:gcc.target/arm/arm.exp ...
FAIL: gcc.target/arm/eliminate.c scan-assembler-times r0,[\\t ]*sp 3

		=== Results Summary ===

You can find the failure logs in *.log.1.xz files in
 - https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts/00-sumfiles/ .
The full lists of regressions and progressions are in
 - https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts/notify/ .
The list of [ignored] baseline and flaky failures are in
 - https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts/sumfiles/xfails.xfail .



-----------------8<--------------------------8<--------------------------8<--------------------------
The information below can be used to reproduce a debug environment:

Current build   : https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1010/artifact/artifacts

Reproduce last good and first bad builds: https://git.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/3c834d85f2ec42c60995c2b678196a06cb744959/tcwg_gcc_check/master-arm/reproduction_instructions.txt

Full commit : https://github.com/gcc-mirror/gcc/commit/3c834d85f2ec42c60995c2b678196a06cb744959

Latest bug report status : https://linaro.atlassian.net/browse/GNU-939

List of configurations that regressed due to this commit :
* tcwg_gcc_check
** master-arm
*** FAIL: 1 regressions
*** https://git.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/3c834d85f2ec42c60995c2b678196a06cb744959/tcwg_gcc_check/master-arm/details.txt
*** https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/

Re: [Linaro-TCWG-CI] basepoints/gcc-14-3999-g3c834d85f2e: FAIL: 1 regressions

[Maxim Kuvyrkov]

Hi Vladimir,

This commit adds a scan-assembler fail for 32-bit ARM, and, more interestingly, for AArch64 it increases code-size of several SPEC CPU2006 and CPU2017 benchmarks by 2-4% -- see [1].

Is the code-size increase expected or can it be avoided?  I'm ready to help in troubleshooting and analyzing this.

Thanks!

[1] https://linaro.atlassian.net/browse/GNU-939

--
Maxim Kuvyrkov
https://www.linaro.org

> On Sep 15, 2023, at 16:03, ci_notify--- via Gcc-regression <gcc-regression@gcc.gnu.org> wrote:
> 
> Dear contributor, our automatic CI has detected problems related to your patch(es).  Please find some details below.  If you have any questions, please follow up on linaro-toolchain@lists.linaro.org mailing list, Libera's #linaro-tcwg channel, or ping your favourite Linaro toolchain developer on the usual project channel.
> 
> In CI config tcwg_gcc_check/master-arm after:
> 
>  | commit basepoints/gcc-14-3999-g3c834d85f2e
>  | Author: Vladimir N. Makarov <vmakarov@redhat.com>
>  | Date:   Thu Sep 14 10:26:48 2023 -0400
>  | 
>  |     [RA]: Improve cost calculation of pseudos with equivalences
>  |     
>  |     RISCV target developers reported that RA can spill pseudo used in a
>  |     loop although there are enough registers to assign.  It happens when
>  |     the pseudo has an equivalence outside the loop and the equivalence is
>  |     not merged into insns using the pseudo.  IRA sets up that memory cost
>  |     to zero when the pseudo has an equivalence and it means that the
>  | ... 18 lines of the commit log omitted.
> 
> FAIL: 1 regressions
> 
> regressions.sum:
> === gcc tests ===
> 
> Running gcc:gcc.target/arm/arm.exp ...
> FAIL: gcc.target/arm/eliminate.c scan-assembler-times r0,[\\t ]*sp 3
> 
> === Results Summary ===
> 
> You can find the failure logs in *.log.1.xz files in
> - https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts/00-sumfiles/ .
> The full lists of regressions and progressions are in
> - https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts/notify/ .
> The list of [ignored] baseline and flaky failures are in
> - https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts/sumfiles/xfails.xfail .
> 
> 
> 
> -----------------8<--------------------------8<--------------------------8<--------------------------
> The information below can be used to reproduce a debug environment:
> 
> Current build   : https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/artifact/artifacts
> Reference build : https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1010/artifact/artifacts
> 
> Reproduce last good and first bad builds: https://git.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/3c834d85f2ec42c60995c2b678196a06cb744959/tcwg_gcc_check/master-arm/reproduction_instructions.txt
> 
> Full commit : https://github.com/gcc-mirror/gcc/commit/3c834d85f2ec42c60995c2b678196a06cb744959
> 
> Latest bug report status : https://linaro.atlassian.net/browse/GNU-939
> 
> List of configurations that regressed due to this commit :
> * tcwg_gcc_check
> ** master-arm
> *** FAIL: 1 regressions
> *** https://git.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/3c834d85f2ec42c60995c2b678196a06cb744959/tcwg_gcc_check/master-arm/details.txt
> *** https://ci.linaro.org/job/tcwg_gcc_check--master-arm-build/1014/

Re: [Linaro-TCWG-CI] basepoints/gcc-14-3999-g3c834d85f2e: FAIL: 1 regressions

[Vladimir Makarov]

On 9/28/23 06:28, Maxim Kuvyrkov wrote:
> Hi Vladimir,
>
> This commit adds a scan-assembler fail for 32-bit ARM, and, more interestingly, for AArch64 it increases code-size of several SPEC CPU2006 and CPU2017 benchmarks by 2-4% -- see [1].
>
> Is the code-size increase expected or can it be avoided?  I'm ready to help in troubleshooting and analyzing this.
>
Hi, Maxim.  Thank you for reporting this. I am leaning to revert the 
patch even if it improves x86-64 specfp2007.  People also reported 
performance regression for specint2017 on different targets because of 
the patch.