Re: A lot of additional testsuite failures when bootstrapping with "--with-arch=native --with-tune=native" on AMD Threadripper

[Rainer Emrich]

Am 12.04.2023 um 12:57 schrieb Richard Biener:

On Wed, Apr 12, 2023 at 11:03 AM Rainer Emrich
<rai...@emrich-ebersheim.de> wrote:

I did some optimization testing by bootstrapping with "--with-arch=native 
--with-tune=native"
on an AMD Threadripper system, that's "znver2".

I'm not sure that's really supported, it appears to be not resolved at
configure time at least.

The bootstrap is successful.

I got a lot of additional testsuite failures especially in the jit testsuite.

Are you doing an LTO bootstrap?  Please quote the full configure and
make commands.

That doesn't matter, I did both normal bootstrap and LTO bootstrap. The example failure is from normal bootstrap:

Platform: x86_64-pc-linux-gnu


The make command is:
"make -j 16"

Compiler version: 13.0.1 20230406 (experimental) [master r13-7112-gd2a499a9881] (GCC) configure flags: --prefix=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test --with-gnu-as --with-as=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/bin/as --with-gnu-ld --with-ld=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/bin/ld --build=x86_64-pc-linux-gnu --enable-threads=posix --enable-shared --enable-__cxa_atexit --enable-plugin --enable-languages=all --with-gmp-include=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/include --with-gmp-lib=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/lib64 --with-mpfr-include=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/include --with-mpfr-lib=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/lib64 --with-mpc-include=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/include --with-mpc-lib=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/lib64 --with-isl-include=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/include --with-isl-lib=/opt/devel/gnu/gcc/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test/lib64 --with-local-prefix=/opt/devel/tec/devel/Linux/x86_64-pc-linux-gnu/Ubuntu_20.04/gcc-13.0.1-test --enable-checking=release --disable-werror --disable-multilib --with-sphinx-build=/home/rainer/sphinx-gcc/bin/sphinx-build --enable-host-shared --with-arch=native --with-tune=native 20 15:54:19 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Does it work when you don't enable jit?As I said above, the bootstrap is successful. There are some additional

testsuite failures, but not many, only in the jit testsuite I get more than 500 additional failures.

This is on Ubuntu 22.04.

Additional info, even combined LTO profiled bootstrap is working, with all languages enabled: c,ada,c++,d,fortran,go,jit,lto,m2,objc,obj-c++,rust

 >> The log shows a lot of failures of the following form:

libgccjit.so: error: bad value 'native' for '-march=' switch
libgccjit.so: note: valid arguments to '-march=' switch are: nocona core2 
nehalem corei7 westmere sandybridge corei7-avx ivybridge core-avx-i haswell 
core-avx2 broadwell skylake skylake-avx512 cannonlake icelake-client rocketlake 
icelake-server cascadelake tigerlake cooperlake sapphirerapids emeraldrapids 
alderlake raptorlake meteorlake graniterapids bonnell atom silvermont slm 
goldmont goldmont-plus tremont sierraforest grandridge knl knm x86-64 x86-64-v2 
x86-64-v3 x86-64-v4 eden-x2 nano nano-1000 nano-2000 nano-3000 nano-x2 eden-x4 
nano-x4 lujiazui k8 k8-sse3 opteron opteron-sse3 athlon64 athlon64-sse3 
athlon-fx amdfam10 barcelona bdver1 bdver2 bdver3 bdver4 znver1 znver2 znver3 
znver4 btver1 btver2 native
DISCARDED exp6 : libgccjit.so: error: bad value 'native' for '-march=' switch
DISCARDED exp6 : libgccjit.so: note: valid arguments to '-march=' switch are: 
nocona core2 nehalem corei7 westmere sandybridge corei7-avx ivybridge 
core-avx-i haswell core-avx2 broadwell skylake skylake-avx512 cannonlake 
icelake-client rocketlake icelake-server cascadelake tigerlake cooperlake 
sapphirerapids emeraldrapids alderlake raptorlake meteorlake graniterapids 
bonnell atom silvermont slm goldmont goldmont-plus tremont sierraforest 
grandridge knl knm x86-64 x86-64-v2 x86-64-v3 x86-64-v4 eden-x2 nano nano-1000 
nano-2000 nano-3000 nano-x2 eden-x4 nano-x4 lujiazui k8 k8-sse3 opteron 
opteron-sse3 athlon64 athlon64-sse3 athlon-fx amdfam10 barcelona bdver1 bdver2 
bdver3 bdver4 znver1 znver2 znver3 znver4 btver1 btver2 native
Assembler messages:
Error: can't open /tmp/libgccjit-uacKEw/fake.s for reading: No such file or 
directory
DISCARDED exp6 : Assembler messages:
DISCARDED exp6 : Error: can't open /tmp/libgccjit-uacKEw/fake.s for reading: No 
such file or directory
libgccjit.so: error: error invoking gcc driver
DISCARDED exp6 : libgccjit.so: error: error invoking gcc driver

So, the "-march" switch in libgccjit.so is wrong!

I can open a PR if neccessary.

Rainer

OpenPGP_0x917D882CE22A6AD2_and_old_rev.asc
Description: OpenPGP public key

OpenPGP_signature
Description: OpenPGP digital signature