Hi All,

The changes in this patch are limited to the rs6000 backend and only introduce a new machine mode (`TDOmode`) with corresponding rs6000-specific handling. Since the changes are target-specific, I'm not sure why they would cause a bootstrap failure on the ARM configuration.

Could this be an unrelated or flaky CI failure?

For context, the other CI results for this patch are: https://patchwork.sourceware.org/project/gcc/patch/993e1e61-3bb4-4d74-b507-6...

* `linaro-tcwg-bot/tcwg_simplebootstrap_build--master-arm-bootstrap`: **Failed** * `linaro-tcwg-bot/tcwg_gcc_build--master-aarch64`: **Passed** * `linaro-tcwg-bot/tcwg_gcc_build--master-arm`: **Passed** * `linaro-tcwg-bot/tcwg_simplebootstrap_build--master-aarch64-bootstrap`: **Passed**

Thanks, Jeevitha

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Dear contributor,

Our automatic CI has detected problems related to your patch(es). Please find some details below.

In simplebootstrap_build master-arm-bootstrap, after: | gcc patch https://patchwork.sourceware.org/patch/138844 | Author: jeevitha jeevitha@linux.ibm.com | Date: Fri Jul 10 00:08:25 2026 +0530 | | [PATCH] rs6000: Add TDOmode support | | Hi All, | | The following patch has been bootstrapped and regtested on powerpc64le-linux. | ... 15 lines of the commit log omitted. | ... applied on top of baseline commit: | d06b04d90ca Remove uses of `CONSTEXPR` macro

Produces Failure: | Results changed to | # reset_artifacts: | -10 | # true: | 0 | # build_abe bootstrap: | # FAILED | # First few build errors in logs: | # 01:33:42 make[2]: *** [Makefile:26651: compare] Error 1 | # 01:33:42 make[1]: *** [Makefile:26631: stage3-bubble] Error 2 | # 01:33:42 make: *** [Makefile:1140: all] Error 2 | | From | # reset_artifacts: | -10 | # true: | 0 | # build_abe bootstrap: | 1

Used configuration : *CI config* tcwg_simplebootstrap_build master-arm-bootstrap *configure and test flags:* none, autodetected on armv8l-unknown-linux-gnueabihf

If you have any questions regarding this report, please ask on linaro-toolchain@lists.linaro.org mailing list.

-----------------8<--------------------------8<--------------------------8<--------------------------

The information below contains the details of the failures, and the ways to reproduce a debug environment:

You can find the failure logs in * http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-arm-bootst... The full lists of regressions and improvements as well as configure and make commands are in * http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-arm-bootst...

Current build : http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-arm-bootst... Reference build : http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-arm-bootst...

Warning: we do not enable maintainer-mode nor automatically update generated files, which may lead to failures if the patch modifies the master files.