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
