Ping. On 6/3/25 01:08, Richard Henderson wrote:
We already track and use known 0's; do the same for 1's. This actually simplifies some of the logical operations, where before required checking for a constant value.Changes for v2: - Some simplifications suggested by Paolo. - Merge affected bit handling into fold_masks_zosa. There's an optimization ordering preference for 1) constant result 2) copy result 3) computed result Having fold_affected_mask separate performed 2 before 1. - Rearrange the and->extract optimization, because it would perform 3 before 1 and 2. r~ Richard Henderson (27): tcg/optimize: Introduce arg_const_val tcg/optimize: Add one's mask to TempOptInfo tcg/optimize: Introduce fold_masks_zosa tcg/optimize: Build and use o_bits in fold_and tcg/optimize: Build and use o_bits in fold_andc tcg/optimize: Build and use z_bits and o_bits in fold_eqv tcg/optimize: Build and use z_bits and o_bits in fold_nand tcg/optimize: Build and use z_bits and o_bits in fold_nor tcg/optimize: Build and use z_bits and o_bits in fold_not tcg/optimize: Build and use one and affected bits in fold_or tcg/optimize: Build and use zero, one and affected bits in fold_orc tcg/optimize: Build and use o_bits in fold_xor tcg/optimize: Build and use o_bits in fold_bswap tcg/optimize: Build and use o_bits in fold_deposit tcg/optimize: Build and use o_bits in fold_extract tcg/optimize: Build and use z_bits and o_bits in fold_extract2 tcg/optimize: Build and use o_bits in fold_exts tcg/optimize: Build and use o_bits in fold_extu tcg/optimize: Build and use o_bits in fold_movcond tcg/optimize: Build and use o_bits in fold_sextract tcg/optimize: Build and use o_bits in fold_shift tcg/optimize: Use fold_and in do_constant_folding_cond[12] tcg/optimize: Fold and to extract during optimize tcg/optimize: Simplify fold_and constant checks tcg/optimize: Simplify fold_andc constant checks tcg/optimize: Simplify fold_orc constant checks tcg/optimize: Simplify fold_eqv constant checks tcg/optimize.c | 456 +++++++++++++++++++++++++++++-------------------- 1 file changed, 274 insertions(+), 182 deletions(-)
