From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/jit-test/tests/wasm/tail-calls/litmus3.js | 36 ++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 js/src/jit-test/tests/wasm/tail-calls/litmus3.js (limited to 'js/src/jit-test/tests/wasm/tail-calls/litmus3.js') diff --git a/js/src/jit-test/tests/wasm/tail-calls/litmus3.js b/js/src/jit-test/tests/wasm/tail-calls/litmus3.js new file mode 100644 index 0000000000..bdd0918717 --- /dev/null +++ b/js/src/jit-test/tests/wasm/tail-calls/litmus3.js @@ -0,0 +1,36 @@ +// |jit-test| skip-if: !wasmTailCallsEnabled() || !wasmExceptionsEnabled() + +// Mutually recursive functions implement a multi-entry loop using 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 + (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 $even (i32.sub (local.get $n) (i32.const 1))))) + 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 $odd (i32.sub (local.get $n) (i32.const 1)) (i32.const 33))))) +) +`); + +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, /.*/); -- cgit v1.2.3