| Age | Commit message (Collapse) | Author |
|---|
|
Instead of having one i_select_val_sfI instruction that uses
the GetArg1() macro to fetch the controlling expression, use
three separate instructions for each of the register types.
That will save one word when selecting on the {x,0} register.
It should also be slightly faster since a conditional branch
is eliminated.
Although it seems that the BEAM compiler will never generate
a constant controlling expression (even with optimizations
turned off), we still make sure that they will work by
evaluating the select_val instruction at load time.
Handle the select_tuple_arity instruction in the same way.
|
|
The tmp_arg1 and tmp_arg2 variables are intended for transferring
values from the fetch/2 instructions to instructions such as
i_plus/3. In many places, however, tmp_arg1 and tmp_arg2 are used
as general temporary variables within a single instruction.
Improve the code generation by replacing sloppy use of tmp_arg1
and tmp_arg2 with block-local variables. In most cases, that will
allow the temporary values to be kept in registers.
|
|
By default, GCC will inline calls to helper functions. Since
process_main() is already huge, there is no reason to inline
the helper functions (and some of them are used very seldom).
|
|
There were two separate functions (call_error_handler() and
call_breakpoint_handler()) that were identical except for
the name of the function in the error_handler module being
called. Generalize call_error_handler() by adding a function
name argument so that it can be used for both purposes.
Also let the call_error_handler() return the new program
counter instead of passing it in c_p->i. That slightly decrease
the code size at the call site.
There is also no need to use the Dispatch() macro to yet again
decrease the reduction counter, because that has just been done by
the call instruction that caused the execution of the
call_error_handler or i_debug_breakpoint instruction.
|
|
The compiler does not generate select_val instructions that only
selects one value, but the loader may previously have created such
an instruction when it splitted a select_val instruction that
selected on bignums.
|
|
Combine the put_tuple/2 and all following put/1 instructions
to one i_put_tuple/2 instruction. In general, that will reduce
the number of instruction words by 50 percent.
Measurements seem to indicate that the speed is about the same.
|
|
|
|
|
|
|
|
In many (not all) cases, the value for the 'I' type will
fit into 32 bits.
|
|
We don't want the packable types listed in two places.
|
|
|
|
|
|
|
|
|
|
Introduce a new 'Q' type, similar to 'P' except that it
can be packed.
|
|
In the 32-bit BEAM emulator, it is only possible to pack
3 register operands into one word. Therefore, the move2
instruction (that has 4 operands) needs two words for its
operands.
Take advantage of the larger wordsize in the 64-bit emulator
and pack up to 4 operands into a single word.
|
|
Giving the beam_makeops script access to the external word
size (=the size of instruction words) will allow it to pack
more operands into a word for the 64 bits emulator.
|
|
In the transformation engine in the loader, an is_eq/1 instruction
is currently always preceded by an is_type/1 instruction. Therefore,
save a word and slight amount of time by combining those
instructions into an is_type_eq/2 instruction.
|
|
|
|
The i_jump_on_val_zero/3 and i_select_tuple_arity/3 instructions
were not disassembled correctly.
|
|
|
|
|
|
|
|
It would only really work in simple case like:
select_val S=q Fail=f Size=u Rest=* => ...
where all operands for a single instruction where bound to
variables, and not for more complicated cases such as:
i_put_tuple Dst Arity Puts=* | put PutSrc => ...
|
|
There was a version of the BEAM loader and emulator that
had two versions of the fmove/2 instruction, one version
that allocated heap space internally and a newer version that
assumed that a previous test_heap/2 instruction had already
allocated the heap space.
Though the allocating fmove/2 instruction is no longer
supported, some vestiges of it still remains.
|
|
|
|
|
|
erts_debug:instructions/0 is useful for finding which specific
instructions that are not used at all.
|
|
Also added ASSERTion in beam_emu.c that the tmp-heap-counter in 0.
|
|
|
|
* egil/timer-wheel-min-time/OTP-8990:
Teach timer-wheel slots to use double linked lists
Remove timer-thread implementation
Refactor timer interface
Teach timer-wheel to keep min time
|
|
Conflicts:
erts/emulator/beam/erl_time.h
|
|
* bjorn/bs-zero-width-bug/OTP-8997:
Fix type-checking of variable used in zero-width bit syntax construction
|
|
<<A:0>> will always produce an empty binary, regardless of the
type of A. The bug is in the run-time system. Fix it so that a
non-numeric value for A will cause a badarg exception.
Reported-by: Zvi
|
|
|
|
|
|
Increases the speed of the timer-wheel
|
|
* pan/r14b01-file-driver-fix:
Correct usage of pointer-to-size in unix_efile
|
|
* pan/bad-dist-msg/OTP-8993:
Remove ancient distribution message DOP_NODE_LINK from all code
Teach VM not to dump core on bad dist message structure
|
|
* pan/werl-scrollwheel/OTP-8985:
Teach win_con.c about scroll wheels
|
|
|
|
* raimo/getifaddrs_ifa_addr_NULL/OTP-8996:
Fix segfault for NULL return value fields from getifaddrs()
|
|
* rickard/exit/2-refc/OTP-9005:
Decrement refc after unlock in exit/2
|
|
|
|
|
|
* rickard/fix-warnings/R14B02:
Remove unused variable
Remove stray semicolons in erl_term.h
|
|
* rickard/ets-no-write-refc/OTP-9000:
Stop using reference counter when write accessing ETS-tables
Conflicts:
erts/emulator/beam/erl_db.c
|
|
* rickard/ets-tab-delete/OTP-8999:
Safe deallocation of ETS-table structures
Fix rwlock resource leak when hitting system limit
Conflicts:
erts/emulator/beam/erl_process.h
erts/emulator/beam/erl_process.c
|
|
* rickard/atomic-type/OTP-8974:
Use 32-bit atomics for system block
Use 32-bit atomics for misc scheduling specific information
Use 32-bit atomic for uaflgs in thread specific events
Use 32-bit atomics for process lock flags
Add 32-bit atomics to emulator APIs
Use new atomic types in emulator
Use 32-bit atomics for ethr_thr_create
Use 32-bit atomics for mutex and rwmutex flags
Use 32-bit atomics for events
Add support for 32-bit atomics
Move atomic API into own files
Add support for 64-bit atomics on Windows
Remove unused ethread time functionality
Introduce ethr_sint_t and use it for atomics
|
