https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115640
--- Comment #3 from Andrew Stubbs <ams at gcc dot gnu.org> --- (In reply to Richard Biener from comment #2) > If you force GCN to use fixed length vectors (how?), does it work? How's > it behaving on aarch64 with SVE? (the CI was happy, but maybe doesn't > enable SVE) I believe "--param vect-partial-vector-usage=0" will disable the use of WHILE_ULT? The default is "2" for the standalone toolchain, and last I checked the value is inherited from the host in the offload toolchain; the default for x86_64 was "1", meaning approximately "only use partial vectors in epilogue loops".