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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PATCH 00/48] tcg: optimize redundant sign extensions
Date: Sun, 29 Aug 2021 23:24:03 -0700	[thread overview]
Message-ID: <20210830062451.639572-1-richard.henderson@linaro.org> (raw)

Currently, we have support for optimizing redundant zero extensions,
which I think was done with x86 and aarch64 in mind, which zero-extend
all 32-bit operations into the 64-bit register.

But targets like Alpha, MIPS, and RISC-V do sign-extensions instead.
The last 5 patches address this.

But before that, split the quite massive tcg_optimize function.


r~


Richard Henderson (48):
  tcg/optimize: Rename "mask" to "z_mask"
  tcg/optimize: Split out OptContext
  tcg/optimize: Remove do_default label
  tcg/optimize: Change tcg_opt_gen_{mov,movi} interface
  tcg/optimize: Move prev_mb into OptContext
  tcg/optimize: Split out init_arguments
  tcg/optimize: Split out copy_propagate
  tcg/optimize: Split out fold_call
  tcg/optimize: Drop nb_oargs, nb_iargs locals
  tcg/optimize: Change fail return for do_constant_folding_cond*
  tcg/optimize: Return true from tcg_opt_gen_{mov,movi}
  tcg/optimize: Split out finish_folding
  tcg/optimize: Use a boolean to avoid a mass of continues
  tcg/optimize: Split out fold_mb, fold_qemu_{ld,st}
  tcg/optimize: Split out fold_const{1,2}
  tcg/optimize: Split out fold_setcond2
  tcg/optimize: Split out fold_brcond2
  tcg/optimize: Split out fold_brcond
  tcg/optimize: Split out fold_setcond
  tcg/optimize: Split out fold_mulu2_i32
  tcg/optimize: Split out fold_addsub2_i32
  tcg/optimize: Split out fold_movcond
  tcg/optimize: Split out fold_extract2
  tcg/optimize: Split out fold_extract, fold_sextract
  tcg/optimize: Split out fold_deposit
  tcg/optimize: Split out fold_count_zeros
  tcg/optimize: Split out fold_bswap
  tcg/optimize: Split out fold_dup, fold_dup2
  tcg/optimize: Split out fold_mov
  tcg/optimize: Split out fold_xx_to_i
  tcg/optimize: Split out fold_xx_to_x
  tcg/optimize: Split out fold_xi_to_i
  tcg/optimize: Add type to OptContext
  tcg/optimize: Split out fold_to_not
  tcg/optimize: Split out fold_sub_to_neg
  tcg/optimize: Split out fold_xi_to_x
  tcg/optimize: Split out fold_ix_to_i
  tcg/optimize: Split out fold_masks
  tcg/optimize: Expand fold_mulu2_i32 to all 4-arg multiplies
  tcg/optimize: Expand fold_addsub2_i32 to 64-bit ops
  tcg/optimize: Sink commutative operand swapping into fold functions
  tcg/optimize: Add more simplifications for orc
  tcg/optimize: Stop forcing z_mask to "garbage" for 32-bit values
  tcg/optimize: Optimize sign extensions
  tcg/optimize: Propagate sign info for logical operations
  tcg/optimize: Propagate sign info for setcond
  tcg/optimize: Propagate sign info for bit counting
  tcg/optimize: Propagate sign info for shifting

 tcg/optimize.c | 2594 +++++++++++++++++++++++++++++-------------------
 1 file changed, 1577 insertions(+), 1017 deletions(-)

-- 
2.25.1



             reply	other threads:[~2021-08-30  6:26 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-30  6:24 Richard Henderson [this message]
2021-08-30  6:24 ` [PATCH 01/48] tcg/optimize: Rename "mask" to "z_mask" Richard Henderson
2021-08-30  9:15   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 02/48] tcg/optimize: Split out OptContext Richard Henderson
2021-08-30  6:24 ` [PATCH 03/48] tcg/optimize: Remove do_default label Richard Henderson
2021-08-30  6:24 ` [PATCH 04/48] tcg/optimize: Change tcg_opt_gen_{mov,movi} interface Richard Henderson
2021-08-30  6:24 ` [PATCH 05/48] tcg/optimize: Move prev_mb into OptContext Richard Henderson
2021-08-30  6:24 ` [PATCH 06/48] tcg/optimize: Split out init_arguments Richard Henderson
2021-08-30  9:17   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 07/48] tcg/optimize: Split out copy_propagate Richard Henderson
2021-08-30  9:18   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 08/48] tcg/optimize: Split out fold_call Richard Henderson
2021-08-30  6:24 ` [PATCH 09/48] tcg/optimize: Drop nb_oargs, nb_iargs locals Richard Henderson
2021-08-30  6:24 ` [PATCH 10/48] tcg/optimize: Change fail return for do_constant_folding_cond* Richard Henderson
2021-08-30  6:24 ` [PATCH 11/48] tcg/optimize: Return true from tcg_opt_gen_{mov,movi} Richard Henderson
2021-08-30  9:20   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 12/48] tcg/optimize: Split out finish_folding Richard Henderson
2021-08-30  6:24 ` [PATCH 13/48] tcg/optimize: Use a boolean to avoid a mass of continues Richard Henderson
2021-08-30  9:23   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 14/48] tcg/optimize: Split out fold_mb, fold_qemu_{ld,st} Richard Henderson
2021-08-30  6:24 ` [PATCH 15/48] tcg/optimize: Split out fold_const{1,2} Richard Henderson
2021-08-30  6:24 ` [PATCH 16/48] tcg/optimize: Split out fold_setcond2 Richard Henderson
2021-08-30  6:24 ` [PATCH 17/48] tcg/optimize: Split out fold_brcond2 Richard Henderson
2021-08-30  6:24 ` [PATCH 18/48] tcg/optimize: Split out fold_brcond Richard Henderson
2021-08-30  6:24 ` [PATCH 19/48] tcg/optimize: Split out fold_setcond Richard Henderson
2021-08-30  6:24 ` [PATCH 20/48] tcg/optimize: Split out fold_mulu2_i32 Richard Henderson
2021-08-30  6:24 ` [PATCH 21/48] tcg/optimize: Split out fold_addsub2_i32 Richard Henderson
2021-08-30  6:24 ` [PATCH 22/48] tcg/optimize: Split out fold_movcond Richard Henderson
2021-08-30  6:24 ` [PATCH 23/48] tcg/optimize: Split out fold_extract2 Richard Henderson
2021-08-30  6:24 ` [PATCH 24/48] tcg/optimize: Split out fold_extract, fold_sextract Richard Henderson
2021-08-30  6:24 ` [PATCH 25/48] tcg/optimize: Split out fold_deposit Richard Henderson
2021-08-30  6:24 ` [PATCH 26/48] tcg/optimize: Split out fold_count_zeros Richard Henderson
2021-08-30  6:24 ` [PATCH 27/48] tcg/optimize: Split out fold_bswap Richard Henderson
2021-08-30 21:17   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 28/48] tcg/optimize: Split out fold_dup, fold_dup2 Richard Henderson
2021-08-30  6:24 ` [PATCH 29/48] tcg/optimize: Split out fold_mov Richard Henderson
2021-08-30 21:57   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 30/48] tcg/optimize: Split out fold_xx_to_i Richard Henderson
2021-08-30 21:56   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 31/48] tcg/optimize: Split out fold_xx_to_x Richard Henderson
2021-08-30 21:55   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 32/48] tcg/optimize: Split out fold_xi_to_i Richard Henderson
2021-08-30 21:53   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 33/48] tcg/optimize: Add type to OptContext Richard Henderson
2021-08-30  6:24 ` [PATCH 34/48] tcg/optimize: Split out fold_to_not Richard Henderson
2021-08-30  6:24 ` [PATCH 35/48] tcg/optimize: Split out fold_sub_to_neg Richard Henderson
2021-08-30  6:24 ` [PATCH 36/48] tcg/optimize: Split out fold_xi_to_x Richard Henderson
2021-08-30  6:24 ` [PATCH 37/48] tcg/optimize: Split out fold_ix_to_i Richard Henderson
2021-08-30  6:24 ` [PATCH 38/48] tcg/optimize: Split out fold_masks Richard Henderson
2021-08-30  6:24 ` [PATCH 39/48] tcg/optimize: Expand fold_mulu2_i32 to all 4-arg multiplies Richard Henderson
2021-08-30  6:24 ` [PATCH 40/48] tcg/optimize: Expand fold_addsub2_i32 to 64-bit ops Richard Henderson
2021-08-30 21:47   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 41/48] tcg/optimize: Sink commutative operand swapping into fold functions Richard Henderson
2021-08-30  6:24 ` [PATCH 42/48] tcg/optimize: Add more simplifications for orc Richard Henderson
2021-08-30  6:24 ` [PATCH 43/48] tcg/optimize: Stop forcing z_mask to "garbage" for 32-bit values Richard Henderson
2021-08-30  6:24 ` [PATCH 44/48] tcg/optimize: Optimize sign extensions Richard Henderson
2021-08-30  6:24 ` [PATCH 45/48] tcg/optimize: Propagate sign info for logical operations Richard Henderson
2021-08-30 21:49   ` Philippe Mathieu-Daudé
2021-08-30  6:24 ` [PATCH 46/48] tcg/optimize: Propagate sign info for setcond Richard Henderson
2021-08-30  6:24 ` [PATCH 47/48] tcg/optimize: Propagate sign info for bit counting Richard Henderson
2021-08-30  6:24 ` [PATCH 48/48] tcg/optimize: Propagate sign info for shifting Richard Henderson
2021-08-30 22:00 ` [PATCH 00/48] tcg: optimize redundant sign extensions Philippe Mathieu-Daudé
2021-08-31  3:50   ` Richard Henderson

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