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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/wasm/tail-calls/litmus4.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/wasm/tail-calls/litmus4.js')
-rw-r--r-- | js/src/jit-test/tests/wasm/tail-calls/litmus4.js | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/tail-calls/litmus4.js b/js/src/jit-test/tests/wasm/tail-calls/litmus4.js new file mode 100644 index 0000000000..c16f712aac --- /dev/null +++ b/js/src/jit-test/tests/wasm/tail-calls/litmus4.js @@ -0,0 +1,43 @@ +// |jit-test| skip-if: !wasmTailCallsEnabled() || !wasmExceptionsEnabled() + +// Mutually recursive functions implement a multi-entry loop using indirect tail +// calls, with exception handling. +// +// The functions do not have the same signatures, so if all arguments are stack +// arguments then these use different amounts of stack space. +// +// The "even" function will throw when the input is zero, so when an exception +// bubbles out of return_call it must not be caught by the exception handler in +// "odd", but must instead be delegated to the caller, which is JS code. + +var ins = wasmEvalText(` +(module + (table 2 2 funcref) + (elem (i32.const 0) $even $odd) + (type $even_t (func (param i32) (result i32))) + (type $odd_t (func (param i32 i32) (result i32))) + (tag $t) + + (func $odd (export "odd") (param $n i32) (param $dummy i32) (result i32) + try (result i32) + (if (result i32) (i32.eqz (local.get $n)) + (then (return (i32.const 0))) + (else (return_call_indirect (type $even_t) (i32.sub (local.get $n) (i32.const 1)) + (i32.const 0)))) + catch_all + unreachable + end) + + (func $even (export "even") (param $n i32) (result i32) + (if (result i32) (i32.eqz (local.get $n)) + (then (throw $t)) + (else (return_call_indirect (type $odd_t) (i32.sub (local.get $n) (i32.const 1)) (i32.const 33) + (i32.const 1))))) +) +`); + +assertErrorMessage(() => ins.exports.even(TailCallIterations), WebAssembly.Exception, /.*/); +assertEq(ins.exports.odd(TailCallIterations, 33), 0); + +assertEq(ins.exports.even(TailCallIterations+1), 0); +assertErrorMessage(() => ins.exports.odd(TailCallIterations+1, 33), WebAssembly.Exception, /.*/); |