diff options
Diffstat (limited to 'js/src/jit-test/tests/wasm/exceptions/ion-loop-phi.js')
| -rw-r--r-- | js/src/jit-test/tests/wasm/exceptions/ion-loop-phi.js | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/exceptions/ion-loop-phi.js b/js/src/jit-test/tests/wasm/exceptions/ion-loop-phi.js new file mode 100644 index 0000000000..bdf49ca97b --- /dev/null +++ b/js/src/jit-test/tests/wasm/exceptions/ion-loop-phi.js @@ -0,0 +1,59 @@ +// Finishing a loop will try to minimize phi nodes. We must properly replace +// phi nodes that escape a loop via catch block control flow patches. +wasmEvalText(`(module + (func) + (func (local i32) + try + loop + call 0 + i32.const 0 + br_if 0 + end + catch_all + end + ) +)`); + +// Same as above, but ensure that we check every enclosing try block for +// control flow patches, as delegate can tunnel outwards. +wasmEvalText(`(module + (func) + (func (local i32) + try + try + loop + call 0 + i32.const 0 + br_if 0 + end + delegate 0 + catch_all + end + ) +)`); + +// Ensure that we check the body block as delegate can target that. +wasmEvalText(`(module + (func) + (func (local i32) + loop + try + (; catch patch to try block is added ;) + call 0 + (; br_if ensures we will need a backedge ;) + i32.const 0 + br_if 1 + (; catch patches are relocated to body ;) + delegate 1 + (; finishing loop backedge must fixup patches stored in body ;) + end + + (; add another catch patch to body so that the landing pad will be a + join point between two edges, forcing a use of the dangling phi, + hitting the debug assertion + ;) + try + call 0 + delegate 0 + ) +)`); |