diff options
Diffstat (limited to 'src/parseTools.js')
| -rw-r--r-- | src/parseTools.js | 31 |
1 files changed, 4 insertions, 27 deletions
diff --git a/src/parseTools.js b/src/parseTools.js index a7d089ea..d01f32f2 100644 --- a/src/parseTools.js +++ b/src/parseTools.js @@ -1248,7 +1248,6 @@ function makeSetValueAsm(ptr, pos, value, type, noNeedFirst, ignore, align, noSa return makeSetValue(ptr, pos, value, type, noNeedFirst, ignore, align, noSafe, sep, forcedAlign, true); } -var SEEK_OPTIMAL_ALIGN_MIN = 20; var UNROLL_LOOP_MAX = 8; function makeSetValues(ptr, pos, value, type, num, align) { @@ -1268,7 +1267,7 @@ function makeSetValues(ptr, pos, value, type, num, align) { } else { // USE_TYPED_ARRAYS == 2 // If we don't know how to handle this at compile-time, or handling it is best done in a large amount of code, call memset // TODO: optimize the case of numeric num but non-numeric value - if (!isNumber(num) || !isNumber(value) || (align < 4 && parseInt(num) >= SEEK_OPTIMAL_ALIGN_MIN)) { + if (!isNumber(num) || !isNumber(value) || (parseInt(num)/align >= UNROLL_LOOP_MAX)) { return '_memset(' + asmCoercion(getFastValue(ptr, '+', pos), 'i32') + ', ' + asmCoercion(value, 'i32') + ', ' + asmCoercion(num, 'i32') + ')'; } num = parseInt(num); @@ -1283,16 +1282,7 @@ function makeSetValues(ptr, pos, value, type, num, align) { [4, 2, 1].forEach(function(possibleAlign) { if (num == 0) return; if (align >= possibleAlign) { - if (num <= UNROLL_LOOP_MAX*possibleAlign) { - ret.push(unroll('i' + (possibleAlign*8), Math.floor(num/possibleAlign), possibleAlign, values[possibleAlign])); - } else { - ret.push('var $$dest = ' + getFastValue(ptr, '+', pos) + '; ' + - 'var $$stop = ($$dest + ' + num + ')|0; ' + - 'while (($$dest|0) < ($$stop|0)) {' + - ' HEAP' + (possibleAlign*8) + '[$$dest' + (possibleAlign > 1 ? '>>' + log2(possibleAlign) : '') + '] = ' + values[possibleAlign] + '; ' + - ' $$dest = ($$dest + ' + possibleAlign + ')|0; ' + - '}'); - } + ret.push(unroll('i' + (possibleAlign*8), Math.floor(num/possibleAlign), possibleAlign, values[possibleAlign])); pos = getFastValue(pos, '+', Math.floor(num/possibleAlign)*possibleAlign); num %= possibleAlign; } @@ -1329,7 +1319,7 @@ function makeCopyValues(dest, src, num, type, modifier, align, sep) { unroll(type, 1) + ' }'; } else { // USE_TYPED_ARRAYS == 2 // If we don't know how to handle this at compile-time, or handling it is best done in a large amount of code, call memset - if (!isNumber(num) || (align < 4 && parseInt(num) >= SEEK_OPTIMAL_ALIGN_MIN)) { + if (!isNumber(num) || (parseInt(num)/align >= UNROLL_LOOP_MAX)) { return '_memcpy(' + dest + ', ' + src + ', ' + num + ')'; } num = parseInt(num); @@ -1337,20 +1327,7 @@ function makeCopyValues(dest, src, num, type, modifier, align, sep) { [4, 2, 1].forEach(function(possibleAlign) { if (num == 0) return; if (align >= possibleAlign) { - // If we can unroll the loop, do so. Also do so if we must unroll it (we do not create real loops when inlined) - if (num <= UNROLL_LOOP_MAX*possibleAlign || sep == ',') { - ret.push(unroll('i' + (possibleAlign*8), Math.floor(num/possibleAlign), possibleAlign)); - } else { - assert(sep == ';'); - ret.push('var $$src = ' + src + '; ' + - 'var $$dest = ' + dest + '; ' + - 'var $$stop = ($$src + ' + num + ')|0; ' + - 'while (($$src|0) < ($$stop|0)) { ' + - ' HEAP' + (possibleAlign*8) + '[' + getHeapOffset('$$dest', 'i' + (possibleAlign*8)) + '] = HEAP' + (possibleAlign*8) + '[' + getHeapOffset('$$src', 'i' + (possibleAlign*8)) + ']; ' + - ' $$src = ($$src + ' + possibleAlign + ')|0; ' + - ' $$dest = ($$dest + ' + possibleAlign + ')|0; ' + - '}'); - } + ret.push(unroll('i' + (possibleAlign*8), Math.floor(num/possibleAlign), possibleAlign)); src = getFastValue(src, '+', Math.floor(num/possibleAlign)*possibleAlign); dest = getFastValue(dest, '+', Math.floor(num/possibleAlign)*possibleAlign); num %= possibleAlign; |