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LibJS: Add fast path for division of two numbers
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Browse source 
We already had fast paths for Add, Sub and Mul. Might as well do Div.

1.18x speed-up on this micro-benchmark:

    (() => {
        let a = 1234;
        for (let i = 0; i < 100_000_000; ++i)
            a / a;
    })()
This commit is contained in:
Andreas Kling 2025-10-11 17:33:34 +02:00 • committed by Andreas Kling
commit a76f420207
Notes: github-actions[bot] 2025-10-11 18:09:55 +00:00
2 changed files with 16 additions and 1 deletions
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2
Libraries/LibJS/Bytecode/Op.h
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@ -113,6 +113,7 @@ private:
O(BitwiseAnd, bitwise_and) \
O(BitwiseOr, bitwise_or) \
O(BitwiseXor, bitwise_xor) \
O(Div, div) \
O(GreaterThan, greater_than) \
O(GreaterThanEquals, greater_than_equals) \
O(LeftShift, left_shift) \
@ -124,7 +125,6 @@ private:
O(UnsignedRightShift, unsigned_right_shift)
#define JS_ENUMERATE_COMMON_BINARY_OPS_WITHOUT_FAST_PATH(O) \
O(Div, div) \
O(Exp, exp) \
O(Mod, mod) \
O(In, in) \