On May 26, 2024, "Kewen.Lin" <li...@linux.ibm.com> wrote: > Hi, > on 2024/4/22 17:38, Alexandre Oliva wrote: >> Ping? >> https://gcc.gnu.org/pipermail/gcc-patches/2021-March/566530.html >> (modified version follows)
> Segher originated this test case, I was expecting he can chime in this. :) Me too ;-) >> We've observed failures of this test on powerpc configurations that >> default to different calling conventions and alignment requirements. > It seems that it was using the original "BE" and "LE" guards to shadow > ABIs, could you share some more on how you found this failure? It seems > that your test environment with -mstrict-align turned on by default? And > also having a ABI which passing small struct return value in register? Exactly, AdaCore's ppc64-vx7r2 are configured so as to enable -mstrict-align and -freg-struct-return by default. But since these settings may change depending on the target variant, I figured it would be useful to record what the assumptions are that the test makes. That one of these settings changed depending on endianness and affected codegen was, to me, further evidence that this would be useful, so, with the explicit settings, I could restore the original test's expectations. -- Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/ Free Software Activist GNU Toolchain Engineer More tolerance and less prejudice are key for inclusion and diversity Excluding neuro-others for not behaving ""normal"" is *not* inclusive
