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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Notice when the input is known to be zero-extended and force
the TCG_BSWAP_IZ flag on. Honor the TCG_BSWAP_OS bit during
constant folding. Propagate the input to the output mask.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We're going to change how to look up the call flags from a TCGop,
so extract it as a helper.
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Because we now store uint64_t in TCGTemp, we can now always
store the full 64-bit duplicate immediate. So remove the
difference between 32- and 64-bit hosts.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not allocate a large block for indexing. Instead, allocate
for each temporary as they are seen.
In general, this will use less memory, if we consider that most
TBs do not touch every target register. This also allows us to
allocate TempOptInfo for new temps created during optimization.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These will hold a single constant for the duration of the TB.
They are hashed, so that each value has one temp across the TB.
Not used yet, this is all infrastructure.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
