Commit Graph

91289 Commits

Author SHA1 Message Date
Richard Henderson
4e858d96aa tcg/optimize: Use fold_xx_to_i for orc
Recognize the constant function for or-complement.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-28 20:55:07 -07:00
Richard Henderson
faa2e10045 tcg/optimize: Stop forcing z_mask to "garbage" for 32-bit values
This "garbage" setting pre-dates the addition of the type
changing opcodes INDEX_op_ext_i32_i64, INDEX_op_extu_i32_i64,
and INDEX_op_extr{l,h}_i64_i32.

So now we have a definitive points at which to adjust z_mask
to eliminate such bits from the 32-bit operands.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-28 20:55:07 -07:00
Richard Henderson
18cf3d07a2 tcg: Extend call args using the correct opcodes
Pretending that the source is i64 when it is in fact i32 is
incorrect; we have type-changing opcodes that must be used.
This bug trips up the subsequent change to the optimizer.

Fixes: 4f2331e5b6
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-28 20:54:52 -07:00
Richard Henderson
7a2f708452 tcg/optimize: Sink commutative operand swapping into fold functions
Most of these are handled by creating a fold_const2_commutative
to handle all of the binary operators.  The rest were already
handled on a case-by-case basis in the switch, and have their
own fold function in which to place the call.

We now have only one major switch on TCGOpcode.

Introduce NO_DEST and a block comment for swap_commutative in
order to make the handling of brcond and movcond opcodes cleaner.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:23 -07:00
Richard Henderson
9531c078ff tcg/optimize: Expand fold_addsub2_i32 to 64-bit ops
Rename to fold_addsub2.
Use Int128 to implement the wider operation.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
407112b03d tcg/optimize: Expand fold_mulu2_i32 to all 4-arg multiplies
Rename to fold_multiply2, and handle muls2_i32, mulu2_i64,
and muls2_i64.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
fae450ba47 tcg/optimize: Split out fold_masks
Move all of the known-zero optimizations into the per-opcode
functions.  Use fold_masks when there is a possibility of the
result being determined, and simply set ctx->z_mask otherwise.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
da48e27202 tcg/optimize: Split out fold_ix_to_i
Pull the "op r, 0, b => movi r, 0" optimization into a function,
and use it in fold_shift.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
a63ce0e9cb tcg/optimize: Split out fold_xi_to_x
Pull the "op r, a, i => mov r, a" optimization into a function,
and use them in the outer-most logical operations.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
9caca88a76 tcg/optimize: Split out fold_sub_to_neg
Even though there is only one user, place this more complex
conversion into its own helper.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
0e0a32bacb tcg/optimize: Split out fold_to_not
Split out the conditional conversion from a more complex logical
operation to a simple NOT.  Create a couple more helpers to make
this easy for the outer-most logical operations.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
67f84c9621 tcg/optimize: Add type to OptContext
Compute the type of the operation early.

There are at least 4 places that used a def->flags ladder
to determine the type of the operation being optimized.

There were two places that assumed !TCG_OPF_64BIT means
TCG_TYPE_I32, and so could potentially compute incorrect
results for vector operations.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
e8679955ec tcg/optimize: Split out fold_xi_to_i
Pull the "op r, a, 0 => movi r, 0" optimization into a function,
and use it in the outer opcode fold functions.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
ca7bb049a0 tcg/optimize: Split out fold_xx_to_x
Pull the "op r, a, a => mov r, a" optimization into a function,
and use it in the outer opcode fold functions.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
cbe42fb2f2 tcg/optimize: Split out fold_xx_to_i
Pull the "op r, a, a => movi r, 0" optimization into a function,
and use it in the outer opcode fold functions.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
2cfac7fa48 tcg/optimize: Split out fold_mov
This is the final entry in the main switch that was in a
different form.  After this, we have the option to convert
the switch into a function dispatch table.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
8cdb3fcb8e tcg/optimize: Split out fold_dup, fold_dup2
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
09bacdc263 tcg/optimize: Split out fold_bswap
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
30dd0bfeb5 tcg/optimize: Split out fold_count_zeros
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
1b1907b846 tcg/optimize: Split out fold_deposit
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
b6617c8821 tcg/optimize: Split out fold_extract, fold_sextract
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
dcd08996c9 tcg/optimize: Split out fold_extract2
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
0c310a3005 tcg/optimize: Split out fold_movcond
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
e3f7dc2167 tcg/optimize: Split out fold_addsub2_i32
Add two additional helpers, fold_add2_i32 and fold_sub2_i32
which will not be simple wrappers forever.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
6b8ac0d149 tcg/optimize: Split out fold_mulu2_i32
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
c63ff55cc5 tcg/optimize: Split out fold_setcond
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
079b08040e tcg/optimize: Split out fold_brcond
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
764d2aba08 tcg/optimize: Split out fold_brcond2
Reduce some code duplication by folding the NE and EQ cases.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
bc47b1aa5b tcg/optimize: Split out fold_setcond2
Reduce some code duplication by folding the NE and EQ cases.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
2f9f08ba43 tcg/optimize: Split out fold_const{1,2}
Split out a whole bunch of placeholder functions, which are
currently identical.  That won't last as more code gets moved.

Use CASE_32_64_VEC for some logical operators that previously
missed the addition of vectors.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
3eefdf2b58 tcg/optimize: Split out fold_mb, fold_qemu_{ld,st}
This puts the separate mb optimization into the same framework
as the others.  While fold_qemu_{ld,st} are currently identical,
that won't last as more code gets moved.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
404a148d89 tcg/optimize: Use a boolean to avoid a mass of continues
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
137f1f4429 tcg/optimize: Split out finish_folding
Copy z_mask into OptContext, for writeback to the
first output within the new function.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
6b99d5bf38 tcg/optimize: Return true from tcg_opt_gen_{mov,movi}
This will allow callers to tail call to these functions
and return true indicating processing complete.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
8d57bf1e82 tcg/optimize: Change fail return for do_constant_folding_cond*
Return -1 instead of 2 for failure, so that we can
use comparisons against 0 for all cases.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
ec5d4cbeef tcg/optimize: Drop nb_oargs, nb_iargs locals
Rather than try to keep these up-to-date across folding,
re-read nb_oargs at the end, after re-reading the opcode.

A couple of asserts need dropping, but that will take care
of itself as we split the function further.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
5cf32be7d8 tcg/optimize: Split out fold_call
Calls are special in that they have a variable number
of arguments, and need to be able to clobber globals.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
8774dded02 tcg/optimize: Split out copy_propagate
Continue splitting tcg_optimize.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
e2577ea24f tcg/optimize: Split out init_arguments
There was no real reason for calls to have separate code here.
Unify init for calls vs non-calls using the call path, which
handles TCG_CALL_DUMMY_ARG.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
d0ed5151b1 tcg/optimize: Move prev_mb into OptContext
This will expose the variable to subroutines that
will be broken out of tcg_optimize.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
dc84988a5f tcg/optimize: Change tcg_opt_gen_{mov,movi} interface
Adjust the interface to take the OptContext parameter instead
of TCGContext or both.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
b10f38339b tcg/optimize: Remove do_default label
Break the final cleanup clause out of the main switch
statement.  When fully folding an opcode to mov/movi,
use "continue" to process the next opcode, else break
to fall into the final cleanup.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
3b3f847d75 tcg/optimize: Split out OptContext
Provide what will become a larger context for splitting
the very large tcg_optimize function.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Richard Henderson
b1fde411d0 tcg/optimize: Rename "mask" to "z_mask"
Prepare for tracking different masks by renaming this one.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:11:22 -07:00
Luis Pires
023462978a host-utils: add unit tests for divu128/divs128
Signed-off-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211025191154.350831-5-luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:10:00 -07:00
Luis Pires
40f3e79a86 host-utils: add 128-bit quotient support to divu128/divs128
These will be used to implement new decimal floating point
instructions from Power ISA 3.1.

The remainder is now returned directly by divu128/divs128,
freeing up phigh to receive the high 64 bits of the quotient.

Signed-off-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211025191154.350831-4-luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:10:00 -07:00
Luis Pires
8ac2d6c526 host-utils: move udiv_qrnnd() to host-utils
Move udiv_qrnnd() from include/fpu/softfloat-macros.h to host-utils,
so it can be reused by divu128().

Signed-off-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211025191154.350831-3-luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:10:00 -07:00
Luis Pires
9276a31c34 host-utils: move checks out of divu128/divs128
In preparation for changing the divu128/divs128 implementations
to allow for quotients larger than 64 bits, move the div-by-zero
and overflow checks to the callers.

Signed-off-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211025191154.350831-2-luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:10:00 -07:00
Frédéric Pétrot
1c46937358 qemu/int128: Add int128_{not,xor}
Addition of not and xor on 128-bit integers.

Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr>
Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org>
Message-Id: <20211025122818.168890-3-frederic.petrot@univ-grenoble-alpes.fr>
[rth: Split out logical operations.]
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 17:10:00 -07:00
Richard Henderson
c52d69e7db 9pfs: performance fix and cleanup
* First patch fixes suboptimal I/O performance on guest due to previously
   incorrect block size being transmitted to 9p client.
 
 * Subsequent patches are cleanup ones intended to reduce code complexity.
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Merge remote-tracking branch 'remotes/cschoenebeck/tags/pull-9p-20211027' into staging

9pfs: performance fix and cleanup

* First patch fixes suboptimal I/O performance on guest due to previously
  incorrect block size being transmitted to 9p client.

* Subsequent patches are cleanup ones intended to reduce code complexity.

* remotes/cschoenebeck/tags/pull-9p-20211027:
  9pfs: use P9Array in v9fs_walk()
  9pfs: make V9fsPath usable via P9Array API
  9pfs: make V9fsString usable via P9Array API
  fsdev/p9array.h: check scalar type in P9ARRAY_NEW()
  9pfs: introduce P9Array
  9pfs: simplify blksize_to_iounit()
  9pfs: deduplicate iounit code
  9pfs: fix wrong I/O block size in Rgetattr

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-27 11:45:18 -07:00