[v1] tcg/optimize: Track and use known 1's

[PATCH 00/20] tcg/optimize: Track and use known 1's

Richard Henderson posted 20 patches 7 months, 2 weeks ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20250505202751.3510517-1-richard.henderson@linaro.org

Maintainers: Richard Henderson <richard.henderson@linaro.org>

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tcg/optimize.c | 359 +++++++++++++++++++++++++++++++------------------
1 file changed, 226 insertions(+), 133 deletions(-)

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[PATCH 00/20] tcg/optimize: Track and use known 1's

Posted by Richard Henderson 7 months, 2 weeks ago

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.


r~


Richard Henderson (20):
  tcg/optimize: Introduce arg_const_val
  tcg/optimize: Add one's mask to TempOptInfo
  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.c | 359 +++++++++++++++++++++++++++++++------------------
 1 file changed, 226 insertions(+), 133 deletions(-)

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2.43.0