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// Testing runtime execution of select + comparison operations.
// Normally they are folded into shorter/faster sequence than select alone.
const floatOps = {
lt(a, b) { return a < b ? 0 : 1; },
le(a, b) { return a <= b ? 0 : 1; },
gt(a, b) { return a > b ? 0 : 1; },
ge(a, b) { return a >= b ? 0 : 1; },
eq(a, b) { return a === b ? 0 : 1; },
ne(a, b) { return a !== b ? 0 : 1; },
}
for (let ty of ['f32', 'f64']) {
for (let op of ['lt', 'le', 'gt', 'ge', 'eq', 'ne']) {
const module = new WebAssembly.Module(wasmTextToBinary(`(module
(memory (export "memory") 1 1)
(func (export "test") (result i32)
i32.const 128
i32.load8_u
i32.const 129
i32.load8_u
i32.const 0
${ty}.load
i32.const ${ty == 'f32' ? 4 : 8}
${ty}.load
${ty}.${op}
select
)
(data (i32.const 128) "\\00\\01"))`));
const instance = new WebAssembly.Instance(module);
const arr = new (ty == 'f32' ? Float32Array : Float64Array)(instance.exports.memory.buffer);
for (let [a, b] of cross(
[0, 1, -1e100, Infinity, -Infinity, 1e100, -1e-10, 1/-Infinity, NaN]
)) {
arr[0] = a; arr[1] = b;
assertEq(instance.exports.test(), floatOps[op](arr[0], arr[1]))
}
}
}
const intOps = {
lt(a, b) { return a < b ? 0 : 1; },
le(a, b) { return a <= b ? 0 : 1; },
gt(a, b) { return a > b ? 0 : 1; },
ge(a, b) { return a >= b ? 0 : 1; },
eq(a, b) { return a === b ? 0 : 1; },
ne(a, b) { return a !== b ? 0 : 1; },
}
for (let [ty, signed] of [['i32', true], ['i32', false], ['i64', true], ['i64', false]]) {
for (let op of ['lt', 'le', 'gt', 'ge', 'eq', 'ne']) {
const module = new WebAssembly.Module(wasmTextToBinary(`(module
(memory (export "memory") 1 1)
(func (export "test") (result i32)
i32.const 128
i32.load8_u
i32.const 129
i32.load8_u
i32.const 0
${ty}.load
i32.const ${ty == 'i32' ? 4 : 8}
${ty}.load
${ty}.${op}${op[0] == 'l' || op[0] == 'g' ? (signed ? '_s' : '_u') : ''}
select
)
(data (i32.const 128) "\\00\\01"))`));
const instance = new WebAssembly.Instance(module);
const arr = new (ty == 'i32' ? (signed ? Int32Array : Uint32Array) :
(signed ? BigInt64Array : BigUint64Array))
(instance.exports.memory.buffer);
const c = ty == 'i32' ? (a => a|0) : BigInt;
for (let [a, b] of cross(
[c(0), ~c(0), c(1), ~c(1), c(1) << c(8), ~c(1) << c(12)]
)) {
arr[0] = a; arr[1] = b;
assertEq(instance.exports.test(), intOps[op](arr[0], arr[1]))
}
}
}
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