[Bug tree-optimization/86924] tree-slp-vectorize may create unaligned memory access, causing segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86924 --- Comment #3 from Mario Rohkrämer --- Created attachment 44567 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44567=edit Zipped temp output encoder.i by lupo... This is the "-save-temps" output which user lupo... attached in comment 12 to the Chromium bug report I linked above.
[Bug tree-optimization/86924] tree-slp-vectorize may create unaligned memory access, causing segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86924 --- Comment #2 from Mario Rohkrämer --- Unfortunately, I do not have much experience in running a compile manually. I only let the "media-autobuild suite" batch run. https://github.com/jb-alvarado/media-autobuild_suite/ I would not know for sure where to manipulate these batch/shell files to add the requested argument, or how to manually run the compilation for one specific file. It's all automated. But I will ask around and try to get advice.
[Bug tree-optimization/86924] tree-slp-vectorize may create unaligned memory access, causing segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86924 Richard Biener changed: What|Removed |Added Target||x86_64-w64-mingw32 Status|UNCONFIRMED |WAITING Last reconfirmed||2018-08-21 Ever confirmed|0 |1 --- Comment #1 from Richard Biener --- The question is where rcx comes from and why it isn't suitably aligned. This is very likely an issue in chromium, not gcc. The workaround patch shows the things to look at, namely the type declarations of *cpi and ordered_bwd and where they are allocated. Please attach preprocessed source for encoder.c as you use it when compiling for x86_64-w64-mingw32 (just add -save-temps to the compile that reproduces the failure).
