Roberto Ierusalimschy
a006514ea1
Big revamp in the implmentation of labels/gotos
...
Added restriction that, when a label is created, there cannot be
another label with the same name visible. That allows backward goto's
to be resolved when they are read. Backward goto's get a close if
they jump out of the scope of some variable; labels get a close only
if previous goto to it jumps out of the scope of some upvalue.
2018-10-29 14:26:48 -03:00
Roberto Ierusalimschy
4cd1f4aac0
Towards "to closed" local variables
...
Start of the implementation of "scoped variables" or "to be closed"
variables, local variables whose '__close' (or themselves) are called
when they go out of scope. This commit implements the syntax, the
opcode, and the creation of the corresponding upvalue, but it still
does not call the finalizations when the variable goes out of scope
(the most important part).
Currently, the syntax is 'local scoped name = exp', but that will
probably change.
2018-10-08 10:42:07 -03:00
Roberto Ierusalimschy
4d5de1c1fb
Fixed bug in line info. when using 'not' operator
...
When creating code for a jump on a 'not' condition, the code generator
was removing an instruction (the OP_NOT) without adjusting its
corresponding line information.
This fix also added tests for this case and extra functionality in
the test library to debug line info. structures.
2018-07-11 12:53:23 -03:00
Roberto Ierusalimschy
03c6a05ec8
no more nil-in-table
2018-04-04 11:23:41 -03:00
Roberto Ierusalimschy
0c7738240e
FALLTHROUGH comment must be last "statement"
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(so it does not work when inside a block)
2018-03-16 11:22:09 -03:00
Roberto Ierusalimschy
4a1612ff9b
new experimental syntax using reserved word 'undef'
2018-03-07 12:55:38 -03:00
Roberto Ierusalimschy
ef8263f81f
better names for macros for tags and types.
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rttype -> rawtt; ttyperaw -> withvariant; ttype -> ttypetag;
tnov -> ttype
2018-02-26 11:16:05 -03:00
Roberto Ierusalimschy
212095a601
new opcodes OP_GTI/OP_GEI
2018-02-21 12:49:32 -03:00
Roberto Ierusalimschy
465b474899
small reorganization of 'luaV_flttointeger'/'luaV_tointeger'
2018-02-21 09:54:26 -03:00
Roberto Ierusalimschy
49dae52d08
correct way to check stack space for vararg functions
2018-02-17 17:20:00 -02:00
Roberto Ierusalimschy
0682fe8169
some simplifications/optimizations in returns from Lua functions
2018-02-15 13:34:29 -02:00
Roberto Ierusalimschy
b1379936cf
vararg back to '...' (but with another implementation)
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new implementation should have zero overhead for non-vararg functions
2018-02-09 13:16:06 -02:00
Roberto Ierusalimschy
e2b15aa21d
janitor work on casts
2018-01-28 13:13:26 -02:00
Roberto Ierusalimschy
5bd8d388de
OP_CONCAT does not move its result (to simplify its execution)
2018-01-27 14:56:33 -02:00
Roberto Ierusalimschy
28f215ecf8
comments
2018-01-18 14:24:31 -02:00
Roberto Ierusalimschy
33e3774f44
keep more opcode arguments byte-aligned
2018-01-09 09:24:12 -02:00
Roberto Ierusalimschy
f360e7778b
assert cannot use instruction after the last
2017-12-22 14:43:59 -02:00
Roberto Ierusalimschy
4676f6599e
new macros 'isOT'/'isIT'
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(plus exchanged parameters of OP_VARARG to make it similar to other
'isOT' instructions)
2017-12-22 12:16:46 -02:00
Roberto Ierusalimschy
ab07005568
new auxiliary function 'luaK_isKint' + removal of 'luaK_needclose',
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which was not being used anywhere.
2017-12-18 13:44:44 -02:00
Roberto Ierusalimschy
f8c1c1469a
some cleaning on signed opcode parameters
2017-12-15 16:53:48 -02:00
Roberto Ierusalimschy
e001d5aea6
'VRELOCABLE' -> 'VRELOC'
2017-12-14 12:24:02 -02:00
Roberto Ierusalimschy
86431a2f1c
new opcodes BANDK/BORK/BXORK. (They do not use immediate operands
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because, too often, masks in bitwise operations are integers larger
than one byte.)
2017-12-13 16:32:09 -02:00
Roberto Ierusalimschy
c7ee7fe026
new opcodes OP_SHLI/OP_SHRI
2017-12-04 15:41:30 -02:00
Roberto Ierusalimschy
ac78b914b6
warnings from Visual Studio /W3
2017-11-30 13:37:16 -02:00
Roberto Ierusalimschy
10b8c99bbb
small peephole optimizations
2017-11-30 11:29:18 -02:00
Roberto Ierusalimschy
745eb41993
new opcodes OP_RETURN0/OP_RETURN1
2017-11-29 14:57:36 -02:00
Roberto Ierusalimschy
36aecd4548
order opcodes cannot use 'K' operands
2017-11-28 13:26:15 -02:00
Roberto Ierusalimschy
ff5fe51044
using register 'k' for conditions in tests (we only need one bit there)
2017-11-28 10:58:18 -02:00
Roberto Ierusalimschy
599f1742c6
detail (typo in comments)
2017-11-23 17:29:04 -02:00
Roberto Ierusalimschy
3c230cc825
using 'A' for register instead of 'B' in relational opcodes
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('R(A)' is already created by default for all instructions.)
2017-11-22 17:15:44 -02:00
Roberto Ierusalimschy
41f2936d8f
new opcode 'OP_EQI' for equality with immediate numbers
2017-11-22 16:41:20 -02:00
Roberto Ierusalimschy
4c0e36a46e
new instruction 'OP_EQK' (for equality with constants)
2017-11-16 10:59:14 -02:00
Roberto Ierusalimschy
26679ea35b
new function 'luaV_flttointeger' to convert floats to integers (without
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string coercions) + string operands to bitwise operations handled
by string metamethods
2017-11-08 12:50:23 -02:00
Roberto Ierusalimschy
c3e5946fb2
new format for JUMP instructions (to allow larger offsets)
2017-11-07 15:20:42 -02:00
Roberto Ierusalimschy
a1ef58b3a5
eplicit 1-bit opcode operand 'k'
2017-10-04 18:56:32 -03:00
Roberto Ierusalimschy
8fbe9e3470
new opcodes with immediate integer operand for all arithmetic operations
2017-10-04 12:49:24 -03:00
Roberto Ierusalimschy
f3b3d9b5c2
string constants (Kstr) must fit into 'B' register
2017-10-02 19:50:57 -03:00
Roberto Ierusalimschy
bc1b0733b8
avoid the use of bit 'Bk' ('B' will lose this bit soon)
2017-10-01 16:13:43 -03:00
Roberto Ierusalimschy
722bdbe17d
no more 'getBMode'-'getCMode' (imprecise + we will need more space
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for op mode) + better control of op modes
2017-09-28 13:53:29 -03:00
Roberto Ierusalimschy
00e728af88
binary operators use R instead of RK
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faster + nobody uses RK(B), so B can be smaller (freeing one bit
for more opcodes, soon)
2017-09-26 15:14:45 -03:00
Roberto Ierusalimschy
13256a4173
detail
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put explicit all cases for a switch of an enumeration
2017-09-26 14:10:49 -03:00
Roberto Ierusalimschy
abb17cf19b
new opcode OP_LOADF (load immediate float)
2017-09-19 15:38:14 -03:00
Roberto Ierusalimschy
80d9b09f35
jumps do not close upvalues (to be faster and simpler);
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explicit instruction to close upvalues; command 'break' not
handled like a 'goto' (to optimize removal of uneeded 'close'
instructions)
2017-09-13 16:50:08 -03:00
Roberto Ierusalimschy
f96497397a
new type 'StackValue' for stack elements
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(we may want to put extra info there in the future)
2017-06-29 12:06:44 -03:00
Roberto Ierusalimschy
b42430fd3a
'lineinfo' in prototypes saved as differences instead of absolute
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values, so that the array can use bytes instead of ints, reducing
its size. (A new array 'abslineinfo' is used when line differences
do not fit in a byte.)
2017-06-27 08:35:31 -03:00
Roberto Ierusalimschy
de74289049
table field names for dedicated opcodes can be restricted to
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small strings for slightly faster access
2017-05-18 16:44:19 -03:00
Roberto Ierusalimschy
502a1d1108
new opcodes for table access with constant keys (strings and integers)
2017-04-28 17:57:45 -03:00
Roberto Ierusalimschy
173e41b2eb
new opcode OP_ADDI (for immediate integer operand) (Experimental)
2017-04-26 14:46:52 -03:00
Roberto Ierusalimschy
a3f9c1a77a
detail (using unsigned comparison in range check for LOADI)
2017-04-25 17:01:14 -03:00
Roberto Ierusalimschy
6dbae1b5d9
registers in a VINDEXED expression must be freed in order
2017-04-25 15:28:25 -03:00
