use WebAssembly-1.0 compliant function names

These functions were renamed in 2018, before the WebAssembly 1.0 spec
was finalized. wabt 1.0.25 dropped support for pre-1.0 names and the
sources fail to compile with errors like:

```
$ wat2wasm lz4-block-codec.wat
lz4-block-codec.wat:71:5: error: unexpected token get_local, expected ).
    get_local $ilen
    ^^^^^^^^^
lz4-block-codec.wat:78:5: error: unexpected token get_local.
    get_local $ilen
    ^^^^^^^^^
```
This commit is contained in:
Dominik 'Rathann' Mierzejewski 2022-05-22 17:34:12 +02:00
parent 7b2319b7cd
commit 798338e7fa
4 changed files with 601 additions and 601 deletions

View file

@ -64,92 +64,92 @@
(local $x i32)
(local $y i32)
;; trie index is a uint32 offset, need to convert to uint8 offset
get_local $icell
local.get $icell
i32.const 2
i32.shl
set_local $icell
local.set $icell
;; const buf32 = this.buf32;
;; const buf8 = this.buf8;
;; const char0 = buf32[CHAR0_SLOT];
i32.const 2060
i32.load align=4
set_local $char0
local.set $char0
;; const aR = buf32[HAYSTACK_SIZE_SLOT];
i32.const 2048
i32.load align=4
set_local $aR
local.set $aR
;; let al = ai;
get_local $ai
set_local $al
local.get $ai
local.set $al
block $matchFound
block $matchNotFound
;; for (;;) {
loop $mainLoop
;; x = buf8[al];
get_local $al
local.get $al
i32.load8_u
set_local $x
local.set $x
;; al += 1;
get_local $al
local.get $al
i32.const 1
i32.add
set_local $al
local.set $al
;; // find matching segment
;; for (;;) {
block $nextSegment loop $findSegment
;; y = buf32[icell+SEGMENT_INFO];
get_local $icell
local.get $icell
i32.load offset=8 align=4
tee_local $y
local.tee $y
;; bl = char0 + (y & 0x00FFFFFF);
i32.const 0x00FFFFFF
i32.and
get_local $char0
local.get $char0
i32.add
tee_local $bl
local.tee $bl
;; if ( buf8[bl] === x ) {
i32.load8_u
get_local $x
local.get $x
i32.eq
if
;; y = (y >>> 24) - 1;
get_local $y
local.get $y
i32.const 24
i32.shr_u
i32.const 1
i32.sub
tee_local $y
local.tee $y
;; if ( n !== 0 ) {
if
;; x = al + y;
get_local $y
get_local $al
local.get $y
local.get $al
i32.add
tee_local $x
local.tee $x
;; if ( x > aR ) { return 0; }
get_local $aR
local.get $aR
i32.gt_u
br_if $matchNotFound
;; for (;;) {
loop
;; bl += 1;
get_local $bl
local.get $bl
i32.const 1
i32.add
tee_local $bl
local.tee $bl
;; if ( buf8[bl] !== buf8[al] ) { return 0; }
i32.load8_u
get_local $al
local.get $al
i32.load8_u
i32.ne
br_if $matchNotFound
;; al += 1;
get_local $al
local.get $al
i32.const 1
i32.add
tee_local $al
local.tee $al
;; if ( al === x ) { break; }
get_local $x
local.get $x
i32.ne
br_if 0
end
@ -158,11 +158,11 @@
br $nextSegment
end
;; icell = buf32[icell+CELL_OR];
get_local $icell
local.get $icell
i32.load offset=4 align=4
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; if ( icell === 0 ) { return 0; }
i32.eqz
br_if $matchNotFound
@ -171,14 +171,14 @@
end end
;; // next segment
;; icell = buf32[icell+CELL_AND];
get_local $icell
local.get $icell
i32.load align=4
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; const x = buf32[icell+BCELL_EXTRA];
i32.load offset=8 align=4
tee_local $x
local.tee $x
;; if ( x <= BCELL_EXTRA_MAX ) {
i32.const 0x00FFFFFF
i32.le_u
@ -186,43 +186,43 @@
;; if ( x !== 0 && this.matchesExtra(ai, al, x) !== 0 ) {
;; return 1;
;; }
get_local $x
local.get $x
if
get_local $ai
get_local $al
get_local $x
local.get $ai
local.get $al
local.get $x
call $matchesExtra
br_if $matchFound
end
;; x = buf32[icell+BCELL_ALT_AND];
get_local $icell
local.get $icell
i32.load offset=4 align=4
i32.const 2
i32.shl
tee_local $x
local.tee $x
;; if ( x !== 0 && this.matchesLeft(x, ai, al) !== 0 ) {
if
get_local $x
get_local $ai
get_local $al
local.get $x
local.get $ai
local.get $al
call $matchesLeft
br_if $matchFound
;; }
end
;; icell = buf32[icell+BCELL_NEXT_AND];
get_local $icell
local.get $icell
i32.load align=4
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; if ( icell === 0 ) { return 0; }
i32.eqz
br_if $matchNotFound
;; }
end
;; if ( al === aR ) { return 0; }
get_local $al
get_local $aR
local.get $al
local.get $aR
i32.ne
br_if $mainLoop
;; }
@ -255,60 +255,60 @@
;; const char0 = buf32[CHAR0_SLOT];
i32.const 2060
i32.load align=4
set_local $char0
local.set $char0
block $matchFound
block $matchNotFound
;; for (;;) {
loop $mainLoop
;; if ( ar === 0 ) { return 0; }
get_local $ar
local.get $ar
i32.eqz
br_if $matchNotFound
;; ar -= 1;
get_local $ar
local.get $ar
i32.const 1
i32.sub
tee_local $ar
local.tee $ar
;; x = buf8[ar];
i32.load8_u
set_local $x
local.set $x
;; // find matching segment
;; for (;;) {
block $nextSegment loop $findSegment
;; y = buf32[icell+SEGMENT_INFO];
get_local $icell
local.get $icell
i32.load offset=8 align=4
tee_local $y
local.tee $y
;; br = char0 + (y & 0x00FFFFFF);
i32.const 0x00FFFFFF
i32.and
get_local $char0
local.get $char0
i32.add
tee_local $br
local.tee $br
;; y = (y >>> 24) - 1;
get_local $y
local.get $y
i32.const 24
i32.shr_u
i32.const 1
i32.sub
tee_local $y
local.tee $y
;; br += y;
i32.add
tee_local $br
local.tee $br
;; if ( buf8[br] === x ) {
i32.load8_u
get_local $x
local.get $x
i32.eq
if
;; // all characters in segment must match
;; if ( y !== 0 ) {
get_local $y
local.get $y
if
;; x = ar - y;
get_local $ar
get_local $y
local.get $ar
local.get $y
i32.sub
tee_local $x
local.tee $x
;; if ( x < 0 ) { return 0; }
i32.const 0
i32.lt_s
@ -317,21 +317,21 @@
loop
;; ar -= 1; br -= 1;
;; if ( buf8[ar] !== buf8[br] ) { return 0; }
get_local $ar
local.get $ar
i32.const 1
i32.sub
tee_local $ar
local.tee $ar
i32.load8_u
get_local $br
local.get $br
i32.const 1
i32.sub
tee_local $br
local.tee $br
i32.load8_u
i32.ne
br_if $matchNotFound
;; if ( ar === x ) { break; }
get_local $ar
get_local $x
local.get $ar
local.get $x
i32.ne
br_if 0
end
@ -340,11 +340,11 @@
br $nextSegment
end
;; icell = buf32[icell+CELL_OR];
get_local $icell
local.get $icell
i32.load offset=4 align=4
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; if ( icell === 0 ) { return 0; }
i32.eqz
br_if $matchNotFound
@ -353,14 +353,14 @@
end end
;; // next segment
;; icell = buf32[icell+CELL_AND];
get_local $icell
local.get $icell
i32.load align=4
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; const x = buf32[icell+BCELL_EXTRA];
i32.load offset=8 align=4
tee_local $x
local.tee $x
;; if ( x <= BCELL_EXTRA_MAX ) {
i32.const 0x00FFFFFF
i32.le_u
@ -368,20 +368,20 @@
;; if ( x !== 0 && this.matchesExtra(ar, r, x) !== 0 ) {
;; return 1;
;; }
get_local $x
local.get $x
if
get_local $ar
get_local $r
get_local $x
local.get $ar
local.get $r
local.get $x
call $matchesExtra
br_if $matchFound
end
;; icell = buf32[icell+BCELL_NEXT_AND];
get_local $icell
local.get $icell
i32.load align=4
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; if ( icell === 0 ) { return 0; }
i32.eqz
br_if $matchNotFound
@ -414,35 +414,35 @@
;; if ( ix !== 1 ) {
;; const iu = this.extraHandler(l, r, ix);
;; if ( iu === 0 ) { return 0; }
get_local $ix
local.get $ix
i32.const 1
i32.ne
if
get_local $l
get_local $r
get_local $ix
local.get $l
local.get $r
local.get $ix
call $extraHandler
tee_local $iu
local.tee $iu
i32.eqz
br_if $fail
;; } else {
;; iu = -1;
else
i32.const -1
set_local $iu
local.set $iu
;; }
end
;; this.buf32[RESULT_IU_SLOT] = iu;
i32.const 2076
get_local $iu
local.get $iu
i32.store align=4
;; this.buf32[RESULT_L_SLOT] = l;
i32.const 2068
get_local $l
local.get $l
i32.store align=4
;; this.buf32[RESULT_R_SLOT] = r;
i32.const 2072
get_local $r
local.get $r
i32.store align=4
end ;; $succeed
i32.const 1
@ -470,49 +470,49 @@
;; if ( haystackLeft < 0 || (haystackLeft + needleLen) > haystackRight ) {
;; return 0;
;; }
get_local $haystackLeft
local.get $haystackLeft
i32.const 0
i32.lt_s
br_if $fail
get_local $haystackLeft
get_local $needleLen
local.get $haystackLeft
local.get $needleLen
i32.add
get_local $haystackRight
local.get $haystackRight
i32.gt_u
br_if $fail
;; const charCodes = this.buf8;
;; needleLeft += this.buf32[CHAR0_SLOT];
get_local $needleLeft
local.get $needleLeft
i32.const 2060 ;; CHAR0_SLOT memory address
i32.load align=4 ;; CHAR0 memory address
i32.add ;; needle memory address
tee_local $needleLeft
local.tee $needleLeft
;; const needleRight = needleLeft + needleLen;
get_local $needleLen
local.get $needleLen
i32.add
set_local $needleRight
local.set $needleRight
;; while ( charCodes[haystackLeft] === charCodes[needleLeft] ) {
loop $compare
get_local $haystackLeft
local.get $haystackLeft
i32.load8_u
get_local $needleLeft
local.get $needleLeft
i32.load8_u
i32.ne
br_if $fail
;; needleLeft += 1;
get_local $needleLeft
local.get $needleLeft
i32.const 1
i32.add
tee_local $needleLeft
local.tee $needleLeft
;; if ( needleLeft === needleRight ) { return 1; }
get_local $needleRight
local.get $needleRight
i32.eq
br_if $succeed
;; haystackLeft += 1;
i32.const 1
get_local $haystackLeft
local.get $haystackLeft
i32.add
set_local $haystackLeft
local.set $haystackLeft
br $compare
end
;; }
@ -545,76 +545,76 @@
block $fail
block $succeed
;; if ( needleLen === 0 ) { return haystackLeft; }
get_local $needleLen
local.get $needleLen
i32.eqz
br_if $succeed
;; haystackEnd -= needleLen;
get_local $haystackEnd
get_local $needleLen
local.get $haystackEnd
local.get $needleLen
i32.sub
tee_local $haystackEnd
local.tee $haystackEnd
;; if ( haystackEnd < haystackLeft ) { return -1; }
get_local $haystackLeft
local.get $haystackLeft
i32.lt_s
br_if $fail
;; needleLeft += this.buf32[CHAR0_SLOT];
get_local $needleLeft
local.get $needleLeft
i32.const 2060 ;; CHAR0_SLOT memory address
i32.load align=4 ;; CHAR0 memory address
i32.add ;; needle memory address
tee_local $needleLeft
local.tee $needleLeft
;; const needleRight = needleLeft + needleLen;
get_local $needleLen
local.get $needleLen
i32.add
set_local $needleRight
local.set $needleRight
;; const charCodes = this.buf8;
;; for (;;) {
loop $mainLoop
;; let i = haystackLeft;
;; let j = needleLeft;
get_local $haystackLeft
set_local $i
get_local $needleLeft
set_local $j
local.get $haystackLeft
local.set $i
local.get $needleLeft
local.set $j
;; while ( charCodes[i] === charCodes[j] ) {
block $breakMatchChars loop $matchChars
get_local $i
local.get $i
i32.load8_u
get_local $j
local.get $j
i32.load8_u
i32.ne
br_if $breakMatchChars
;; j += 1;
get_local $j
local.get $j
i32.const 1
i32.add
tee_local $j
local.tee $j
;; if ( j === needleRight ) { return haystackLeft; }
get_local $needleRight
local.get $needleRight
i32.eq
br_if $succeed
;; i += 1;
get_local $i
local.get $i
i32.const 1
i32.add
set_local $i
local.set $i
br $matchChars
;; }
end end
;; haystackLeft += 1;
get_local $haystackLeft
local.get $haystackLeft
i32.const 1
i32.add
tee_local $haystackLeft
local.tee $haystackLeft
;; if ( haystackLeft > haystackEnd ) { break; }
get_local $haystackEnd
local.get $haystackEnd
i32.gt_u
br_if $fail
br $mainLoop
;; }
end
end ;; $succeed
get_local $haystackLeft
local.get $haystackLeft
return
end ;; $fail
;; return -1;
@ -640,82 +640,82 @@
(local $j i32)
(local $c0 i32)
;; if ( needleLen === 0 ) { return haystackBeg; }
get_local $needleLen
local.get $needleLen
i32.eqz
if
get_local $haystackBeg
local.get $haystackBeg
return
end
block $fail
block $succeed
;; let haystackLeft = haystackEnd - needleLen;
get_local $haystackEnd
get_local $needleLen
local.get $haystackEnd
local.get $needleLen
i32.sub
tee_local $haystackLeft
local.tee $haystackLeft
;; if ( haystackLeft < haystackBeg ) { return -1; }
get_local $haystackBeg
local.get $haystackBeg
i32.lt_s
br_if $fail
;; needleLeft += this.buf32[CHAR0_SLOT];
get_local $needleLeft
local.get $needleLeft
i32.const 2060 ;; CHAR0_SLOT memory address
i32.load align=4 ;; CHAR0 memory address
i32.add ;; needle memory address
tee_local $needleLeft
local.tee $needleLeft
;; const needleRight = needleLeft + needleLen;
get_local $needleLen
local.get $needleLen
i32.add
set_local $needleRight
local.set $needleRight
;; const charCodes = this.buf8;
;; for (;;) {
loop $mainLoop
;; let i = haystackLeft;
;; let j = needleLeft;
get_local $haystackLeft
set_local $i
get_local $needleLeft
set_local $j
local.get $haystackLeft
local.set $i
local.get $needleLeft
local.set $j
;; while ( charCodes[i] === charCodes[j] ) {
block $breakMatchChars loop $matchChars
get_local $i
local.get $i
i32.load8_u
get_local $j
local.get $j
i32.load8_u
i32.ne
br_if $breakMatchChars
;; j += 1;
get_local $j
local.get $j
i32.const 1
i32.add
tee_local $j
local.tee $j
;; if ( j === needleRight ) { return haystackLeft; }
get_local $needleRight
local.get $needleRight
i32.eq
br_if $succeed
;; i += 1;
get_local $i
local.get $i
i32.const 1
i32.add
set_local $i
local.set $i
br $matchChars
;; }
end end
;; if ( haystackLeft === haystackBeg ) { break; }
;; haystackLeft -= 1;
get_local $haystackLeft
get_local $haystackBeg
local.get $haystackLeft
local.get $haystackBeg
i32.eq
br_if $fail
get_local $haystackLeft
local.get $haystackLeft
i32.const 1
i32.sub
set_local $haystackLeft
local.set $haystackLeft
br $mainLoop
;; }
end
end ;; $succeed
get_local $haystackLeft
local.get $haystackLeft
return
end ;; $fail
;; return -1;

View file

@ -64,19 +64,19 @@
;;
i32.const 264 ;; start of char section is stored at addr 264
i32.load
set_local $char0
local.set $char0
;; let ineedle = this.buf[255];
i32.const 255 ;; addr of needle is stored at addr 255
i32.load8_u
set_local $ineedle
local.set $ineedle
;; let icell = this.buf32[iroot+0];
get_local $iroot
local.get $iroot
i32.const 2
i32.shl
i32.load
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; if ( icell === 0 ) { return -1; }
i32.eqz
if
@ -86,43 +86,43 @@
;; for (;;) {
block $noSegment loop $nextSegment
;; if ( ineedle === 0 ) { return -1; }
get_local $ineedle
local.get $ineedle
i32.eqz
if
i32.const -1
return
end
;; ineedle -= 1;
get_local $ineedle
local.get $ineedle
i32.const -1
i32.add
tee_local $ineedle
local.tee $ineedle
;; let c = this.buf[ineedle];
i32.load8_u
set_local $c
local.set $c
;; for (;;) {
block $foundSegment loop $findSegment
;; v = this.buf32[icell+2];
get_local $icell
local.get $icell
i32.load offset=8
tee_local $v
local.tee $v
;; i0 = char0 + (v >>> 8);
i32.const 8
i32.shr_u
get_local $char0
local.get $char0
i32.add
tee_local $i0
local.tee $i0
;; if ( this.buf[i0] === c ) { break; }
i32.load8_u
get_local $c
local.get $c
i32.eq
br_if $foundSegment
;; icell = this.buf32[icell+0];
get_local $icell
local.get $icell
i32.load
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
i32.eqz
if
i32.const -1
@ -131,44 +131,44 @@
br 0
end end
;; let n = v & 0x7F;
get_local $v
local.get $v
i32.const 0x7F
i32.and
tee_local $n
local.tee $n
;; if ( n > 1 ) {
i32.const 1
i32.gt_u
if
;; n -= 1;
get_local $n
local.get $n
i32.const -1
i32.add
tee_local $n
local.tee $n
;; if ( n > ineedle ) { return -1; }
get_local $ineedle
local.get $ineedle
i32.gt_u
if
i32.const -1
return
end
get_local $i0
local.get $i0
i32.const 1
i32.add
tee_local $i0
local.tee $i0
;; const i1 = i0 + n;
get_local $n
local.get $n
i32.add
set_local $i1
local.set $i1
;; do {
loop
;; ineedle -= 1;
get_local $ineedle
local.get $ineedle
i32.const -1
i32.add
tee_local $ineedle
local.tee $ineedle
;; if ( this.buf[i0] !== this.buf[ineedle] ) { return -1; }
i32.load8_u
get_local $i0
local.get $i0
i32.load8_u
i32.ne
if
@ -176,47 +176,47 @@
return
end
;; i0 += 1;
get_local $i0
local.get $i0
i32.const 1
i32.add
tee_local $i0
local.tee $i0
;; } while ( i0 < i1 );
get_local $i1
local.get $i1
i32.lt_u
br_if 0
end
end
;; if ( (v & 0x80) !== 0 ) {
get_local $v
local.get $v
i32.const 0x80
i32.and
if
;; if ( ineedle === 0 || buf8[ineedle-1] === 0x2E /* '.' */ ) {
;; return ineedle;
;; }
get_local $ineedle
local.get $ineedle
i32.eqz
if
i32.const 0
return
end
get_local $ineedle
local.get $ineedle
i32.const -1
i32.add
i32.load8_u
i32.const 0x2E
i32.eq
if
get_local $ineedle
local.get $ineedle
return
end
end
;; icell = this.buf32[icell+1];
get_local $icell
local.get $icell
i32.load offset=4
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; if ( icell === 0 ) { break; }
br_if 0
end end
@ -245,7 +245,7 @@
;; let lhnchar = this.buf[255];
i32.const 255
i32.load8_u
tee_local $lhnchar
local.tee $lhnchar
;; if ( lhnchar === 0 ) { return 0; }
i32.eqz
if
@ -281,21 +281,21 @@
end
end
;; let icell = this.buf32[iroot+0];
get_local $iroot
local.get $iroot
i32.const 2
i32.shl
tee_local $iroot
local.tee $iroot
i32.load
i32.const 2
i32.shl
tee_local $icell
local.tee $icell
;; if ( this.buf32[icell+2] === 0 ) {
i32.eqz
if
;; this.buf32[iroot+0] = this.addLeafCell(lhnchar);
;; return 1;
get_local $iroot
get_local $lhnchar
local.get $iroot
local.get $lhnchar
call $addLeafCell
i32.store
i32.const 1
@ -304,37 +304,37 @@
;; const char0 = this.buf32[HNBIGTRIE_CHAR0_SLOT];
i32.const 264
i32.load
set_local $char0
local.set $char0
;; for (;;) {
loop $nextSegment
;; const v = this.buf32[icell+2];
get_local $icell
local.get $icell
i32.load offset=8
tee_local $v
local.tee $v
;; let isegchar0 = char0 + (v >>> 8);
i32.const 8
i32.shr_u
get_local $char0
local.get $char0
i32.add
tee_local $isegchar0
local.tee $isegchar0
;; if ( this.buf[isegchar0] !== this.buf[lhnchar-1] ) {
i32.load8_u
get_local $lhnchar
local.get $lhnchar
i32.const -1
i32.add
i32.load8_u
i32.ne
if
;; inext = this.buf32[icell+0];
get_local $icell
local.get $icell
i32.load
tee_local $inext
local.tee $inext
;; if ( inext === 0 ) {
i32.eqz
if
;; this.buf32[icell+0] = this.addLeafCell(lhnchar);
get_local $icell
get_local $lhnchar
local.get $icell
local.get $lhnchar
call $addLeafCell
i32.store
;; return 1;
@ -342,25 +342,25 @@
return
end
;; icell = inext;
get_local $inext
local.get $inext
i32.const 2
i32.shl
set_local $icell
local.set $icell
br $nextSegment
end
;; let isegchar = 1;
i32.const 1
set_local $isegchar
local.set $isegchar
;; lhnchar -= 1;
get_local $lhnchar
local.get $lhnchar
i32.const -1
i32.add
set_local $lhnchar
local.set $lhnchar
;; const lsegchar = v & 0x7F;
get_local $v
local.get $v
i32.const 0x7F
i32.and
tee_local $lsegchar
local.tee $lsegchar
;; if ( lsegchar !== 1 ) {
i32.const 1
i32.ne
@ -368,69 +368,69 @@
;; for (;;) {
block $mismatch loop
;; if ( isegchar === lsegchar ) { break; }
get_local $isegchar
get_local $lsegchar
local.get $isegchar
local.get $lsegchar
i32.eq
br_if $mismatch
get_local $lhnchar
local.get $lhnchar
i32.eqz
br_if $mismatch
;; if ( this.buf[isegchar0+isegchar] !== this.buf[lhnchar-1] ) { break; }
get_local $isegchar0
get_local $isegchar
local.get $isegchar0
local.get $isegchar
i32.add
i32.load8_u
get_local $lhnchar
local.get $lhnchar
i32.const -1
i32.add
i32.load8_u
i32.ne
br_if $mismatch
;; isegchar += 1;
get_local $isegchar
local.get $isegchar
i32.const 1
i32.add
set_local $isegchar
local.set $isegchar
;; lhnchar -= 1;
get_local $lhnchar
local.get $lhnchar
i32.const -1
i32.add
set_local $lhnchar
local.set $lhnchar
br 0
end end
end
;; const boundaryBit = v & 0x80;
get_local $v
local.get $v
i32.const 0x80
i32.and
set_local $boundaryBit
local.set $boundaryBit
;; if ( isegchar === lsegchar ) {
get_local $isegchar
get_local $lsegchar
local.get $isegchar
local.get $lsegchar
i32.eq
if
;; if ( lhnchar === 0 ) {
get_local $lhnchar
local.get $lhnchar
i32.eqz
if
;; if ( boundaryBit !== 0 ) { return 0; }
get_local $boundaryBit
local.get $boundaryBit
if
i32.const 0
return
end
;; this.buf32[icell+2] = v | 0x80;
get_local $icell
get_local $v
local.get $icell
local.get $v
i32.const 0x80
i32.or
i32.store offset=8
else
;; if ( boundaryBit !== 0 ) {
get_local $boundaryBit
local.get $boundaryBit
if
;; if ( this.buf[lhnchar-1] === 0x2E /* '.' */ ) { return -1; }
get_local $lhnchar
local.get $lhnchar
i32.const -1
i32.add
i32.load8_u
@ -442,36 +442,36 @@
end
end
;; inext = this.buf32[icell+1];
get_local $icell
local.get $icell
i32.load offset=4
tee_local $inext
local.tee $inext
;; if ( inext !== 0 ) {
if
;; icell = inext;
get_local $inext
local.get $inext
i32.const 2
i32.shl
set_local $icell
local.set $icell
;; continue;
br $nextSegment
end
;; this.buf32[icell+1] = this.addLeafCell(lhnchar);
get_local $icell
get_local $lhnchar
local.get $icell
local.get $lhnchar
call $addLeafCell
i32.store offset=4
end
else
;; isegchar0 -= char0;
get_local $icell
get_local $isegchar0
get_local $char0
local.get $icell
local.get $isegchar0
local.get $char0
i32.sub
tee_local $isegchar0
local.tee $isegchar0
;; this.buf32[icell+2] = isegchar0 << 8 | isegchar;
i32.const 8
i32.shl
get_local $isegchar
local.get $isegchar
i32.or
i32.store offset=8
;; inext = this.addCell(
@ -479,39 +479,39 @@
;; this.buf32[icell+1],
;; isegchar0 + isegchar << 8 | boundaryBit | lsegchar - isegchar
;; );
get_local $icell
local.get $icell
i32.const 0
get_local $icell
local.get $icell
i32.load offset=4
get_local $isegchar0
get_local $isegchar
local.get $isegchar0
local.get $isegchar
i32.add
i32.const 8
i32.shl
get_local $boundaryBit
local.get $boundaryBit
i32.or
get_local $lsegchar
get_local $isegchar
local.get $lsegchar
local.get $isegchar
i32.sub
i32.or
call $addCell
tee_local $inext
local.tee $inext
;; this.buf32[icell+1] = inext;
i32.store offset=4
;; if ( lhnchar !== 0 ) {
get_local $lhnchar
local.get $lhnchar
if
;; this.buf32[inext+0] = this.addLeafCell(lhnchar);
get_local $inext
local.get $inext
i32.const 2
i32.shl
get_local $lhnchar
local.get $lhnchar
call $addLeafCell
i32.store
else
;; this.buf32[icell+2] |= 0x80;
get_local $icell
get_local $icell
local.get $icell
local.get $icell
i32.load offset=8
i32.const 0x80
i32.or
@ -547,24 +547,24 @@
i32.const 260
i32.const 260
i32.load
tee_local $icell
local.tee $icell
i32.const 12
i32.add
i32.store
;; this.buf32[icell+0] = idown;
get_local $icell
get_local $idown
local.get $icell
local.get $idown
i32.store
;; this.buf32[icell+1] = iright;
get_local $icell
get_local $iright
local.get $icell
local.get $iright
i32.store offset=4
;; this.buf32[icell+2] = v;
get_local $icell
get_local $v
local.get $icell
local.get $v
i32.store offset=8
;; return icell;
get_local $icell
local.get $icell
i32.const 2
i32.shr_u
)
@ -582,58 +582,58 @@
;; const r = this.buf32[TRIE1_SLOT] >>> 2;
i32.const 260
i32.load
tee_local $r
local.tee $r
;; let i = r;
set_local $i
local.set $i
;; while ( lsegchar > 127 ) {
block $lastSegment loop
get_local $lsegchar
local.get $lsegchar
i32.const 127
i32.le_u
br_if $lastSegment
;; this.buf32[i+0] = 0;
get_local $i
local.get $i
i32.const 0
i32.store
;; this.buf32[i+1] = i + 3;
get_local $i
get_local $i
local.get $i
local.get $i
i32.const 12
i32.add
i32.const 2
i32.shr_u
i32.store offset=4
;; this.buf32[i+2] = this.addSegment(lsegchar, lsegchar - 127);
get_local $i
get_local $lsegchar
get_local $lsegchar
local.get $i
local.get $lsegchar
local.get $lsegchar
i32.const 127
i32.sub
call $addSegment
i32.store offset=8
;; lsegchar -= 127;
get_local $lsegchar
local.get $lsegchar
i32.const 127
i32.sub
set_local $lsegchar
local.set $lsegchar
;; i += 3;
get_local $i
local.get $i
i32.const 12
i32.add
set_local $i
local.set $i
br 0
end end
;; this.buf32[i+0] = 0;
get_local $i
local.get $i
i32.const 0
i32.store
;; this.buf32[i+1] = 0;
get_local $i
local.get $i
i32.const 0
i32.store offset=4
;; this.buf32[i+2] = this.addSegment(lsegchar, 0) | 0x80;
get_local $i
get_local $lsegchar
local.get $i
local.get $lsegchar
i32.const 0
call $addSegment
i32.const 0x80
@ -641,12 +641,12 @@
i32.store offset=8
;; this.buf32[TRIE1_SLOT] = i + 3 << 2;
i32.const 260
get_local $i
local.get $i
i32.const 12
i32.add
i32.store
;; return r;
get_local $r
local.get $r
i32.const 2
i32.shr_u
)
@ -666,7 +666,7 @@
(local $i i32) ;; iterator
;;
;; if ( lsegchar === 0 ) { return 0; }
get_local $lsegchar
local.get $lsegchar
i32.eqz
if
i32.const 0
@ -675,45 +675,45 @@
;; let char1 = this.buf32[HNBIGTRIE_CHAR1_SLOT];
i32.const 268
i32.load
tee_local $char1
local.tee $char1
;; const isegchar = char1 - this.buf32[HNBIGTRIE_CHAR0_SLOT];
i32.const 264
i32.load
i32.sub
set_local $isegchar
local.set $isegchar
;; let i = lsegchar;
get_local $lsegchar
set_local $i
local.get $lsegchar
local.set $i
;; do {
loop
;; this.buf[char1++] = this.buf[--i];
get_local $char1
get_local $i
local.get $char1
local.get $i
i32.const -1
i32.add
tee_local $i
local.tee $i
i32.load8_u
i32.store8
get_local $char1
local.get $char1
i32.const 1
i32.add
set_local $char1
local.set $char1
;; } while ( i !== lsegend );
get_local $i
get_local $lsegend
local.get $i
local.get $lsegend
i32.ne
br_if 0
end
;; this.buf32[HNBIGTRIE_CHAR1_SLOT] = char1;
i32.const 268
get_local $char1
local.get $char1
i32.store
;; return isegchar << 8 | lsegchar - lsegend;
get_local $isegchar
local.get $isegchar
i32.const 8
i32.shl
get_local $lsegchar
get_local $lsegend
local.get $lsegchar
local.get $lsegend
i32.sub
i32.or
)

View file

@ -68,15 +68,15 @@
(func (export "lz4BlockEncodeBound")
(param $ilen i32)
(result i32)
get_local $ilen
local.get $ilen
i32.const 0x7E000000
i32.gt_u
if
i32.const 0
return
end
get_local $ilen
get_local $ilen
local.get $ilen
local.get $ilen
i32.const 255
i32.div_u
i32.add
@ -123,14 +123,14 @@
(local $llen i32) ;; length of found literals
(local $moffset i32) ;; offset to found match from current input position
(local $mlen i32) ;; length of found match
get_local $ilen ;; empty input = empty output
local.get $ilen ;; empty input = empty output
i32.const 0x7E000000 ;; max input size: 0x7E000000
i32.gt_u
if
i32.const 0
return
end
get_local $ilen ;; "blocks < 13 bytes cannot be compressed"
local.get $ilen ;; "blocks < 13 bytes cannot be compressed"
i32.const 13
i32.lt_u
if
@ -138,78 +138,78 @@
return
end
call $getLinearMemoryOffset ;; hash table is at start of usable memory
set_local $hashPtrBeg
get_local $inPtr
tee_local $anchorPtr
get_local $ilen
local.set $hashPtrBeg
local.get $inPtr
local.tee $anchorPtr
local.get $ilen
i32.add
tee_local $inPtrEnd
local.tee $inPtrEnd
i32.const -5 ;; "The last 5 bytes are always literals."
i32.add
tee_local $inPtrEnd2
local.tee $inPtrEnd2
i32.const -7 ;; "The last match must start at least 12 bytes before end of block"
i32.add
set_local $inPtrEnd1
get_local $outPtr
set_local $outPtrBeg
local.set $inPtrEnd1
local.get $outPtr
local.set $outPtrBeg
;;
;; sequence processing loop
;;
block $noMoreSequence loop $nextSequence
get_local $inPtr
get_local $inPtrEnd1
local.get $inPtr
local.get $inPtrEnd1
i32.ge_u ;; 5 or less bytes left?
br_if $noMoreSequence
get_local $inPtr ;; first sequence of 3 bytes before match-finding loop
local.get $inPtr ;; first sequence of 3 bytes before match-finding loop
i32.load8_u
i32.const 8
i32.shl
get_local $inPtr
local.get $inPtr
i32.load8_u offset=1
i32.const 16
i32.shl
i32.or
get_local $inPtr
local.get $inPtr
i32.load8_u offset=2
i32.const 24
i32.shl
i32.or
set_local $seq32
local.set $seq32
;;
;; match-finding loop
;;
loop $findMatch block $noMatchFound
get_local $inPtr
get_local $inPtrEnd2
local.get $inPtr
local.get $inPtrEnd2
i32.gt_u ;; less than 12 bytes left?
br_if $noMoreSequence
get_local $seq32 ;; update last byte of current sequence
local.get $seq32 ;; update last byte of current sequence
i32.const 8
i32.shr_u
get_local $inPtr
local.get $inPtr
i32.load8_u offset=3
i32.const 24
i32.shl
i32.or
tee_local $seq32
local.tee $seq32
i32.const 0x9E3779B1 ;; compute 16-bit hash
i32.mul
i32.const 16
i32.shr_u ;; hash value is at top of stack
i32.const 2 ;; lookup refPtr at hash entry
i32.shl
get_local $hashPtrBeg
local.get $hashPtrBeg
i32.add
tee_local $hashPtr
local.tee $hashPtr
i32.load
set_local $refPtr
get_local $hashPtr ;; update hash entry with inPtr
get_local $inPtr
local.set $refPtr
local.get $hashPtr ;; update hash entry with inPtr
local.get $inPtr
i32.store
get_local $inPtr
get_local $refPtr
local.get $inPtr
local.get $refPtr
i32.sub
tee_local $moffset ;; remember match offset, we will need it in case of match
local.tee $moffset ;; remember match offset, we will need it in case of match
i32.const 0xFFFF
i32.gt_s ;; match offset > 65535 = unusable match
br_if $noMatchFound
@ -217,177 +217,177 @@
;; confirm match: different sequences can yield same hash
;; compare-branch each byte to potentially save memory read ops
;;
get_local $seq32 ;; byte 0
local.get $seq32 ;; byte 0
i32.const 0xFF
i32.and
get_local $refPtr
local.get $refPtr
i32.load8_u
i32.ne ;; refPtr[0] !== inPtr[0]
br_if $noMatchFound
get_local $seq32 ;; byte 1
local.get $seq32 ;; byte 1
i32.const 8
i32.shr_u
i32.const 0xFF
i32.and
get_local $refPtr
local.get $refPtr
i32.load8_u offset=1
i32.ne
br_if $noMatchFound ;; refPtr[1] !== inPtr[1]
get_local $seq32 ;; byte 2
local.get $seq32 ;; byte 2
i32.const 16
i32.shr_u
i32.const 0xFF
i32.and
get_local $refPtr
local.get $refPtr
i32.load8_u offset=2
i32.ne ;; refPtr[2] !== inPtr[2]
br_if $noMatchFound
get_local $seq32 ;; byte 3
local.get $seq32 ;; byte 3
i32.const 24
i32.shr_u
i32.const 0xFF
i32.and
get_local $refPtr
local.get $refPtr
i32.load8_u offset=3
i32.ne ;; refPtr[3] !== inPtr[3]
br_if $noMatchFound
;;
;; a valid match has been found at this point
;;
get_local $inPtr ;; compute length of literals
get_local $anchorPtr
local.get $inPtr ;; compute length of literals
local.get $anchorPtr
i32.sub
set_local $llen
get_local $inPtr ;; find match length
local.set $llen
local.get $inPtr ;; find match length
i32.const 4 ;; skip over confirmed 4-byte match
i32.add
set_local $inPtr
get_local $refPtr
local.set $inPtr
local.get $refPtr
i32.const 4
i32.add
tee_local $mlen ;; remember refPtr to later compute match length
set_local $refPtr
local.tee $mlen ;; remember refPtr to later compute match length
local.set $refPtr
block $endOfMatch loop ;; scan input buffer until match ends
get_local $inPtr
get_local $inPtrEnd2
local.get $inPtr
local.get $inPtrEnd2
i32.ge_u
br_if $endOfMatch
get_local $inPtr
local.get $inPtr
i32.load8_u
get_local $refPtr
local.get $refPtr
i32.load8_u
i32.ne
br_if $endOfMatch
get_local $inPtr
local.get $inPtr
i32.const 1
i32.add
set_local $inPtr
get_local $refPtr
local.set $inPtr
local.get $refPtr
i32.const 1
i32.add
set_local $refPtr
local.set $refPtr
br 0
end end $endOfMatch
;; encode token
get_local $outPtr ;; output token
get_local $llen
get_local $refPtr
get_local $mlen
local.get $outPtr ;; output token
local.get $llen
local.get $refPtr
local.get $mlen
i32.sub
tee_local $mlen
local.tee $mlen
call $writeToken
get_local $outPtr
local.get $outPtr
i32.const 1
i32.add
set_local $outPtr
get_local $llen ;; encode/write length of literals if needed
local.set $outPtr
local.get $llen ;; encode/write length of literals if needed
i32.const 15
i32.ge_s
if
get_local $outPtr
get_local $llen
local.get $outPtr
local.get $llen
call $writeLength
set_local $outPtr
local.set $outPtr
end
;; copy literals
get_local $outPtr
get_local $anchorPtr
get_local $llen
local.get $outPtr
local.get $anchorPtr
local.get $llen
call $copy
get_local $outPtr
get_local $llen
local.get $outPtr
local.get $llen
i32.add
set_local $outPtr
local.set $outPtr
;; encode match offset
get_local $outPtr
get_local $moffset
local.get $outPtr
local.get $moffset
i32.store8
get_local $outPtr
get_local $moffset
local.get $outPtr
local.get $moffset
i32.const 8
i32.shr_u
i32.store8 offset=1
get_local $outPtr
local.get $outPtr
i32.const 2
i32.add
set_local $outPtr
get_local $mlen ;; encode/write length of match if needed
local.set $outPtr
local.get $mlen ;; encode/write length of match if needed
i32.const 15
i32.ge_s
if
get_local $outPtr
get_local $mlen
local.get $outPtr
local.get $mlen
call $writeLength
set_local $outPtr
local.set $outPtr
end
get_local $inPtr ;; advance anchor to current position
set_local $anchorPtr
local.get $inPtr ;; advance anchor to current position
local.set $anchorPtr
br $nextSequence
end $noMatchFound
get_local $inPtr ;; no match found: advance to next byte
local.get $inPtr ;; no match found: advance to next byte
i32.const 1
i32.add
set_local $inPtr
local.set $inPtr
br $findMatch end ;; match offset > 65535 = unusable match
end end $noMoreSequence
;;
;; generate last (match-less) sequence if compression succeeded
;;
get_local $outPtr
get_local $outPtrBeg
local.get $outPtr
local.get $outPtrBeg
i32.eq
if
i32.const 0
return
end
get_local $outPtr
get_local $inPtrEnd
get_local $anchorPtr
local.get $outPtr
local.get $inPtrEnd
local.get $anchorPtr
i32.sub
tee_local $llen
local.tee $llen
i32.const 0
call $writeToken
get_local $outPtr
local.get $outPtr
i32.const 1
i32.add
set_local $outPtr
get_local $llen
local.set $outPtr
local.get $llen
i32.const 15
i32.ge_u
if
get_local $outPtr
get_local $llen
local.get $outPtr
local.get $llen
call $writeLength
set_local $outPtr
local.set $outPtr
end
get_local $outPtr
get_local $anchorPtr
get_local $llen
local.get $outPtr
local.get $anchorPtr
local.get $llen
call $copy
get_local $outPtr ;; return number of written bytes
get_local $llen
local.get $outPtr ;; return number of written bytes
local.get $llen
i32.add
get_local $outPtrBeg
local.get $outPtrBeg
i32.sub
)
@ -413,128 +413,128 @@
(local $token i32) ;; sequence token
(local $clen i32) ;; number of bytes to copy
(local $_ i32) ;; general purpose variable
get_local $ilen ;; if ( ilen == 0 ) { return 0; }
local.get $ilen ;; if ( ilen == 0 ) { return 0; }
i32.eqz
if
i32.const 0
return
end
get_local $inPtr0
tee_local $inPtr ;; current position in input buffer
get_local $ilen
local.get $inPtr0
local.tee $inPtr ;; current position in input buffer
local.get $ilen
i32.add
set_local $inPtrEnd
get_local $outPtr0 ;; start of output buffer
set_local $outPtr ;; current position in output buffer
local.set $inPtrEnd
local.get $outPtr0 ;; start of output buffer
local.set $outPtr ;; current position in output buffer
block $noMoreSequence loop ;; iterate through all sequences
get_local $inPtr
get_local $inPtrEnd
local.get $inPtr
local.get $inPtrEnd
i32.ge_u
br_if $noMoreSequence ;; break when nothing left to read in input buffer
get_local $inPtr ;; read token -- consume one byte
local.get $inPtr ;; read token -- consume one byte
i32.load8_u
get_local $inPtr
local.get $inPtr
i32.const 1
i32.add
set_local $inPtr
tee_local $token ;; extract length of literals from token
local.set $inPtr
local.tee $token ;; extract length of literals from token
i32.const 4
i32.shr_u
tee_local $clen ;; consume extra length bytes if present
local.tee $clen ;; consume extra length bytes if present
i32.eqz
if else
get_local $clen
local.get $clen
i32.const 15
i32.eq
if loop
get_local $inPtr
local.get $inPtr
i32.load8_u
get_local $inPtr
local.get $inPtr
i32.const 1
i32.add
set_local $inPtr
tee_local $_
get_local $clen
local.set $inPtr
local.tee $_
local.get $clen
i32.add
set_local $clen
get_local $_
local.set $clen
local.get $_
i32.const 255
i32.eq
br_if 0
end end
get_local $outPtr ;; copy literals to ouput buffer
get_local $inPtr
get_local $clen
local.get $outPtr ;; copy literals to ouput buffer
local.get $inPtr
local.get $clen
call $copy
get_local $outPtr ;; advance output buffer pointer past copy
get_local $clen
local.get $outPtr ;; advance output buffer pointer past copy
local.get $clen
i32.add
set_local $outPtr
get_local $clen ;; advance input buffer pointer past literals
get_local $inPtr
local.set $outPtr
local.get $clen ;; advance input buffer pointer past literals
local.get $inPtr
i32.add
tee_local $inPtr
get_local $inPtrEnd ;; exit if this is the last sequence
local.tee $inPtr
local.get $inPtrEnd ;; exit if this is the last sequence
i32.eq
br_if $noMoreSequence
end
get_local $outPtr ;; read match offset
get_local $inPtr
local.get $outPtr ;; read match offset
local.get $inPtr
i32.load8_u
get_local $inPtr
local.get $inPtr
i32.load8_u offset=1
i32.const 8
i32.shl
i32.or
i32.sub
tee_local $matchPtr
get_local $outPtr ;; match position can't be outside input buffer bounds
local.tee $matchPtr
local.get $outPtr ;; match position can't be outside input buffer bounds
i32.eq
br_if $noMoreSequence
get_local $matchPtr
get_local $inPtrEnd
local.get $matchPtr
local.get $inPtrEnd
i32.lt_u
br_if $noMoreSequence
get_local $inPtr ;; advance input pointer past match offset bytes
local.get $inPtr ;; advance input pointer past match offset bytes
i32.const 2
i32.add
set_local $inPtr
get_local $token ;; extract length of match from token
local.set $inPtr
local.get $token ;; extract length of match from token
i32.const 15
i32.and
i32.const 4
i32.add
tee_local $clen
local.tee $clen
i32.const 19 ;; consume extra length bytes if present
i32.eq
if loop
get_local $inPtr
local.get $inPtr
i32.load8_u
get_local $inPtr
local.get $inPtr
i32.const 1
i32.add
set_local $inPtr
tee_local $_
get_local $clen
local.set $inPtr
local.tee $_
local.get $clen
i32.add
set_local $clen
get_local $_
local.set $clen
local.get $_
i32.const 255
i32.eq
br_if 0
end end
get_local $outPtr ;; copy match to ouput buffer
get_local $matchPtr
get_local $clen
local.get $outPtr ;; copy match to ouput buffer
local.get $matchPtr
local.get $clen
call $copy
get_local $clen ;; advance output buffer pointer past copy
get_local $outPtr
local.get $clen ;; advance output buffer pointer past copy
local.get $outPtr
i32.add
set_local $outPtr
local.set $outPtr
br 0
end end $noMoreSequence
get_local $outPtr ;; return number of written bytes
get_local $outPtr0
local.get $outPtr ;; return number of written bytes
local.get $outPtr0
i32.sub
)
@ -552,18 +552,18 @@
(param $outPtr i32)
(param $llen i32)
(param $mlen i32)
get_local $outPtr
get_local $llen
local.get $outPtr
local.get $llen
i32.const 15
get_local $llen
local.get $llen
i32.const 15
i32.lt_u
select
i32.const 4
i32.shl
get_local $mlen
local.get $mlen
i32.const 15
get_local $mlen
local.get $mlen
i32.const 15
i32.lt_u
select
@ -582,32 +582,32 @@
(param $outPtr i32)
(param $len i32)
(result i32)
get_local $len
local.get $len
i32.const 15
i32.sub
set_local $len
local.set $len
loop
get_local $outPtr
get_local $len
local.get $outPtr
local.get $len
i32.const 255
get_local $len
local.get $len
i32.const 255
i32.lt_u
select
i32.store8
get_local $outPtr
local.get $outPtr
i32.const 1
i32.add
set_local $outPtr
get_local $len
local.set $outPtr
local.get $len
i32.const 255
i32.sub
tee_local $len
local.tee $len
i32.const 0
i32.ge_s
br_if 0
end
get_local $outPtr
local.get $outPtr
)
;;
@ -621,119 +621,119 @@
(param $src i32)
(param $len i32)
block $lessThan8 loop
get_local $len
local.get $len
i32.const 8
i32.lt_u
br_if $lessThan8
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u
i32.store8
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=1
i32.store8 offset=1
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=2
i32.store8 offset=2
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=3
i32.store8 offset=3
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=4
i32.store8 offset=4
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=5
i32.store8 offset=5
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=6
i32.store8 offset=6
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=7
i32.store8 offset=7
get_local $dst
local.get $dst
i32.const 8
i32.add
set_local $dst
get_local $src
local.set $dst
local.get $src
i32.const 8
i32.add
set_local $src
get_local $len
local.set $src
local.get $len
i32.const -8
i32.add
set_local $len
local.set $len
br 0
end end $lessThan8
get_local $len
local.get $len
i32.const 4
i32.ge_u
if
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u
i32.store8
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=1
i32.store8 offset=1
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=2
i32.store8 offset=2
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=3
i32.store8 offset=3
get_local $dst
local.get $dst
i32.const 4
i32.add
set_local $dst
get_local $src
local.set $dst
local.get $src
i32.const 4
i32.add
set_local $src
get_local $len
local.set $src
local.get $len
i32.const -4
i32.add
set_local $len
local.set $len
end
get_local $len
local.get $len
i32.const 2
i32.ge_u
if
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u
i32.store8
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u offset=1
i32.store8 offset=1
get_local $dst
local.get $dst
i32.const 2
i32.add
set_local $dst
get_local $src
local.set $dst
local.get $src
i32.const 2
i32.add
set_local $src
get_local $len
local.set $src
local.get $len
i32.const -2
i32.add
set_local $len
local.set $len
end
get_local $len
local.get $len
i32.eqz
if else
get_local $dst
get_local $src
local.get $dst
local.get $src
i32.load8_u
i32.store8
end

View file

@ -83,133 +83,133 @@
;; const iCharData = buf32[CHARDATA_PTR_SLOT];
i32.const 404
i32.load
set_local $iCharData
local.set $iCharData
;; let iNode = pslBuffer32[RULES_PTR_SLOT];
i32.const 400
i32.load
i32.const 2
i32.shl
set_local $iNode
local.set $iNode
;; let iLabel = LABEL_INDICES_SLOT;
i32.const 256
set_local $iLabel
local.set $iLabel
;; let cursorPos = -1;
i32.const -1
set_local $cursorPos
local.set $cursorPos
;; label-lookup loop
;; for (;;) {
block $labelLookupDone loop $labelLookup
;; // Extract label indices
;; const labelBeg = buf8[iLabel+1];
;; const labelLen = buf8[iLabel+0] - labelBeg;
get_local $iLabel
local.get $iLabel
i32.load8_u
get_local $iLabel
local.get $iLabel
i32.load8_u offset=1
tee_local $labelBeg
local.tee $labelBeg
i32.sub
set_local $labelLen
local.set $labelLen
;; // Match-lookup loop: binary search
;; let r = buf32[iNode+0] >>> 16;
;; if ( r === 0 ) { break; }
get_local $iNode
local.get $iNode
i32.load16_u offset=2
tee_local $r
local.tee $r
i32.eqz
br_if $labelLookupDone
;; const iCandidates = buf32[iNode+2];
get_local $iNode
local.get $iNode
i32.load offset=8
i32.const 2
i32.shl
set_local $iCandidates
local.set $iCandidates
;; let l = 0;
;; let iFound = 0;
i32.const 0
tee_local $l
set_local $iFound
local.tee $l
local.set $iFound
;; while ( l < r ) {
block $binarySearchDone loop $binarySearch
get_local $l
get_local $r
local.get $l
local.get $r
i32.ge_u
br_if $binarySearchDone
;; const iCandidate = l + r >>> 1;
get_local $l
get_local $r
local.get $l
local.get $r
i32.add
i32.const 1
i32.shr_u
tee_local $iCandidate
local.tee $iCandidate
;; const iCandidateNode = iCandidates + iCandidate + (iCandidate << 1);
i32.const 2
i32.shl
tee_local $_1
get_local $_1
local.tee $_1
local.get $_1
i32.const 1
i32.shl
i32.add
get_local $iCandidates
local.get $iCandidates
i32.add
tee_local $iCandidateNode
local.tee $iCandidateNode
;; const candidateLen = buf32[iCandidateNode+0] & 0x000000FF;
i32.load8_u
set_local $candidateLen
local.set $candidateLen
;; let d = labelLen - candidateLen;
get_local $labelLen
get_local $candidateLen
local.get $labelLen
local.get $candidateLen
i32.sub
tee_local $d
local.tee $d
;; if ( d === 0 ) {
i32.eqz
if
;; const iCandidateChar = candidateLen <= 4
get_local $candidateLen
local.get $candidateLen
i32.const 4
i32.le_u
if
;; ? iCandidateNode + 1 << 2
get_local $iCandidateNode
local.get $iCandidateNode
i32.const 4
i32.add
set_local $iCandidateChar
local.set $iCandidateChar
else
;; : buf32[CHARDATA_PTR_SLOT] + buf32[iCandidateNode+1];
get_local $iCharData
get_local $iCandidateNode
local.get $iCharData
local.get $iCandidateNode
i32.load offset=4
i32.add
set_local $iCandidateChar
local.set $iCandidateChar
end
;; for ( let i = 0; i < labelLen; i++ ) {
get_local $labelBeg
tee_local $_1
get_local $labelLen
local.get $labelBeg
local.tee $_1
local.get $labelLen
i32.add
set_local $_3
get_local $iCandidateChar
set_local $_2
local.set $_3
local.get $iCandidateChar
local.set $_2
block $findDiffDone loop $findDiff
;; d = buf8[labelBeg+i] - buf8[iCandidateChar+i];
;; if ( d !== 0 ) { break; }
get_local $_1
local.get $_1
i32.load8_u
get_local $_2
local.get $_2
i32.load8_u
i32.sub
tee_local $d
local.tee $d
br_if $findDiffDone
get_local $_1
local.get $_1
i32.const 1
i32.add
tee_local $_1
get_local $_3
local.tee $_1
local.get $_3
i32.eq
br_if $findDiffDone
get_local $_2
local.get $_2
i32.const 1
i32.add
set_local $_2
local.set $_2
br $findDiff
;; }
end end
@ -217,32 +217,32 @@
end
;; if ( d < 0 ) {
;; r = iCandidate;
get_local $d
local.get $d
i32.const 0
i32.lt_s
if
get_local $iCandidate
set_local $r
local.get $iCandidate
local.set $r
br $binarySearch
end
;; } else if ( d > 0 ) {
;; l = iCandidate + 1;
get_local $d
local.get $d
i32.const 0
i32.gt_s
if
get_local $iCandidate
local.get $iCandidate
i32.const 1
i32.add
set_local $l
local.set $l
br $binarySearch
end
;; } else /* if ( d === 0 ) */ {
;; iFound = iCandidateNode;
;; break;
;; }
get_local $iCandidateNode
set_local $iFound
local.get $iCandidateNode
local.set $iFound
end end
;; }
;; // 2. If no rules match, the prevailing rule is "*".
@ -251,10 +251,10 @@
;; buf8[SUFFIX_NOT_FOUND_SLOT] = 1;
;; iFound = iCandidates;
;; }
get_local $iFound
local.get $iFound
i32.eqz
if
get_local $iCandidates
local.get $iCandidates
i32.load offset=4
i32.const 0x2A
i32.ne
@ -262,12 +262,12 @@
i32.const 399
i32.const 1
i32.store8
get_local $iCandidates
set_local $iFound
local.get $iCandidates
local.set $iFound
end
;; iNode = iFound;
get_local $iFound
tee_local $iNode
local.get $iFound
local.tee $iNode
;; // 5. If the prevailing rule is a exception rule, modify it by
;; // removing the leftmost label.
;; if ( (buf32[iNode+0] & 0x00000200) !== 0 ) {
@ -277,15 +277,15 @@
;; break;
;; }
i32.load8_u offset=1
tee_local $_1
local.tee $_1
i32.const 0x02
i32.and
if
get_local $iLabel
local.get $iLabel
i32.const 256
i32.gt_u
if
get_local $iLabel
local.get $iLabel
i32.const -2
i32.add
return
@ -295,25 +295,25 @@
;; if ( (buf32[iNode+0] & 0x00000100) !== 0 ) {
;; cursorPos = labelBeg;
;; }
get_local $_1
local.get $_1
i32.const 0x01
i32.and
if
get_local $iLabel
set_local $cursorPos
local.get $iLabel
local.set $cursorPos
end
;; if ( labelBeg === 0 ) { break; }
get_local $labelBeg
local.get $labelBeg
i32.eqz
br_if $labelLookupDone
;; iLabel += 2;
get_local $iLabel
local.get $iLabel
i32.const 2
i32.add
set_local $iLabel
local.set $iLabel
br $labelLookup
end end
get_local $cursorPos
local.get $cursorPos
)
;;