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| author | Alon Zakai <alonzakai@gmail.com> | 2014-02-04 11:54:12 -0500 |
|---|---|---|
| committer | Alon Zakai <alonzakai@gmail.com> | 2014-02-04 11:54:12 -0500 |
| commit | 71c8f19c6e63539565641b5d992ba69d27e55475 (patch) | |
| tree | 6c6bad04664f37ae8e938285e61090f2d9780d65 /tools/js-optimizer.js | |
| parent | 3136112a0000d94024851347b3fc03e178481add (diff) | |
do not apply de-morgan's laws on floats, nans break them
Diffstat (limited to 'tools/js-optimizer.js')
| -rw-r--r-- | tools/js-optimizer.js | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/js-optimizer.js b/tools/js-optimizer.js index 905e80fc..6724e77f 100644 --- a/tools/js-optimizer.js +++ b/tools/js-optimizer.js @@ -1143,7 +1143,9 @@ function optimizeShiftsAggressive(ast) { // or such. Simplifying these saves space and time. function simplifyNotCompsDirect(node) { if (node[0] === 'unary-prefix' && node[1] === '!') { - if (node[2][0] === 'binary') { + // de-morgan's laws do not work on floats, due to nans >:( + if (node[2][0] === 'binary' && (!asm || (((node[2][2][0] === 'binary' && node[2][2][1] === '|') || node[2][2][0] === 'num') && + ((node[2][3][0] === 'binary' && node[2][3][1] === '|') || node[2][3][0] === 'num')))) { switch(node[2][1]) { case '<': return ['binary', '>=', node[2][2], node[2][3]]; case '>': return ['binary', '<=', node[2][2], node[2][3]]; |