On 7/14/25 7:55 AM, Robin Dapp wrote:
Hi, In PR120297 we fuse vsetvl e8,mf2,... vsetvl e64,m1,... into vsetvl e64,m4,... Individually, that's ok but we also change the new vsetvl's demand to "SEW only" even though the first original one demanded SEW >= 8 and ratio = 16. As we forget the ratio after the merge we find that the vsetvl following the merged one has ratio = 64 demand and we fuse into vsetvl e64,m1,.. which obviously doesn't have ratio = 16 any more. Regtested on rv64gcv_zvl512b. Regards Robin PR target/120297 gcc/ChangeLog: * config/riscv/riscv-vsetvl.def: Do not forget ratio demand of previous vsetvl. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/pr120297.c: New test.
OK. jeff
