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diff --git a/docs/sections/troubleshooting.md b/docs/sections/troubleshooting.md index d5224c4..0b6f4f9 100644 --- a/docs/sections/troubleshooting.md +++ b/docs/sections/troubleshooting.md @@ -9,6 +9,7 @@ - [No matching distribution found for ethos-u-vela==3.5.0](./troubleshooting.md#no-matching-distribution-found-for-ethos_u_vela) - [How to update Python3 package to 3.7 version](./troubleshooting.md#how-to-update-python3-package-to-newer-version) - [Error trying to build on Arm Virtual Hardware](./troubleshooting.md#error-trying-to-build-on-arm-virtual-hardware) + - [Internal Compiler Error](./troubleshooting.md#internal-compiler-error) ## Inference results are incorrect for my custom files @@ -247,4 +248,29 @@ You can then try rebuilding again e.g. ```commandline python3 ./build_default.py ``` -and the error should be fixed.
\ No newline at end of file +and the error should be fixed. + +## Internal Compiler Error + +There is a known issue with the Arm GNU toolchain version 12.2 (release December 22, 2022). +Compiler from this toolchain throws up this error: + +``` +during RTL pass: combine +/home/user/ml-embedded-evaluation-kit/dependencies/cmsis-nn/Source/SoftmaxFunctions/arm_softmax_s8.c: In function 'arm_exp_on_negative_values_mve_32x4': +/home/user/ml-embedded-evaluation-kit/dependencies/cmsis-nn/Source/SoftmaxFunctions/arm_softmax_s8.c:74:1: internal compiler error: in trunc_int_for_mode, at explow.cc:59 + 74 | } + | ^ +0x7f0343d9b082 __libc_start_main + ../csu/libc-start.c:308 +Please submit a full bug report, with preprocessed source (by using -freport-bug). +Please include the complete backtrace with any bug report. +See <https://bugs.linaro.org/> for instructions. +``` + +This is expected to be fixed in the next release of the toolchain. We recommend using the previous version 11.3.Rel1 +(from August 2022). + +See +- [GCC patches: PR107987](https://gcc.gnu.org/pipermail/gcc-patches/2022-December/607963.html) +- [CMSIS-NN issue 13](https://github.com/ARM-software/CMSIS-NN/issues/13) |