https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111760
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Robin Dapp <rd...@gcc.gnu.org>: https://gcc.gnu.org/g:0c42741ad95af3a1e3ac07350da4c3a94865ed63 commit r14-5151-g0c42741ad95af3a1e3ac07350da4c3a94865ed63 Author: Robin Dapp <rd...@ventanamicro.com> Date: Wed Oct 25 22:19:43 2023 +0200 internal-fn: Add VCOND_MASK_LEN. In order to prevent simplification of a COND_OP with degenerate mask (CONSTM1_RTX) into just an OP in the presence of length masking this patch introduces a length-masked analog to VEC_COND_EXPR: IFN_VCOND_MASK_LEN. It also adds new match patterns that allow the combination of unconditional unary, binary and ternay operations with the VCOND_MASK_LEN into a conditional operation if the target supports it. gcc/ChangeLog: PR tree-optimization/111760 * config/riscv/autovec.md (vcond_mask_len_<mode><vm>): Add expander. * config/riscv/riscv-protos.h (enum insn_type): Add. * config/riscv/riscv-v.cc (needs_fp_rounding): Add !pred_mov. * doc/md.texi: Add vcond_mask_len. * gimple-match-exports.cc (maybe_resimplify_conditional_op): Create VCOND_MASK_LEN when length masking. * gimple-match.h (gimple_match_op::gimple_match_op): Always initialize len and bias. * internal-fn.cc (vec_cond_mask_len_direct): Add. (direct_vec_cond_mask_len_optab_supported_p): Add. (internal_fn_len_index): Add VCOND_MASK_LEN. (internal_fn_mask_index): Ditto. * internal-fn.def (VCOND_MASK_LEN): New internal function. * match.pd: Combine unconditional unary, binary and ternary operations into the respective COND_LEN operations. * optabs.def (OPTAB_D): Add vcond_mask_len optab. gcc/testsuite/ChangeLog: * gcc.dg/vect/vect-cond-arith-2.c: No vect cost model for riscv_v.
