diff options
Diffstat (limited to 'js/src/jit-test/tests/wasm/tail-calls/litmus6.js')
-rw-r--r-- | js/src/jit-test/tests/wasm/tail-calls/litmus6.js | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/tail-calls/litmus6.js b/js/src/jit-test/tests/wasm/tail-calls/litmus6.js new file mode 100644 index 0000000000..6d9e8b9be6 --- /dev/null +++ b/js/src/jit-test/tests/wasm/tail-calls/litmus6.js @@ -0,0 +1,24 @@ +// |jit-test| skip-if: !wasmTailCallsEnabled() + +// Tail-call litmus test with multiple results +// +// Mutually recursive functions implement a multi-entry loop using tail calls. +// The functions do not have the same signatures, so if all arguments are stack +// arguments then these use different amounts of stack space. + +var ins = wasmEvalText(` +(module + (func $odd (export "odd") (param $n i32) (param $dummy i32) (result i32 i32 i32) + (if (result i32 i32 i32) (i32.eqz (local.get $n)) + (then (return (i32.const 0) (i32.const 32769) (i32.const -37))) + (else (return_call $even (i32.sub (local.get $n) (i32.const 1)))))) + + (func $even (export "even") (param $n i32) (result i32 i32 i32) + (if (result i32 i32 i32) (i32.eqz (local.get $n)) + (then (return (i32.const 1) (i32.const -17) (i32.const 44021))) + (else (return_call $odd (i32.sub (local.get $n) (i32.const 1)) (i32.const 33))))) +) +`); + +assertSame(ins.exports.even(TailCallIterations), [1, -17, 44021]); +assertSame(ins.exports.odd(TailCallIterations, 33), [0, 32769, -37]); |