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allow specifying the external memory #7125

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@gkgoat1 gkgoat1 commented Nov 27, 2024

Allows specifying the memory used in Asyncify in case of multiple memories via an export.

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Makes sense to add this, good idea.

Please add documentation for this, around line 246 which is where the current options are documented.

And please add a test. It can be similar to test/lit/passes/asyncify_pass-arg=asyncify-side-module.wast

for (auto& export : module->exports) {
if (export->kind == ExternalKind::Memory &&
export->name == asyncifyMemoryValue) {
asyncifyMemory = export->value;
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Suggested change
asyncifyMemory = export->value;
asyncifyMemory = export->value;
break;

@@ -0,0 +1,116 @@
;; NOTE: Assertions have been generated by update_lit_checks.py --all-items and should not be edited.
;; NOTE: This test was ported using port_passes_tests_to_lit.py and could be cleaned up.
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;; NOTE: This test was ported using port_passes_tests_to_lit.py and could be cleaned up.

;; NOTE: This test was ported using port_passes_tests_to_lit.py and could be cleaned up.

;; RUN: foreach %s %t wasm-opt --enable-multimemory --enable-mutable-globals --asyncify --pass-arg=asyncify-memory@memory -S -o - | filecheck %s

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;; This test checks that the asyncify-memory argument can pick which memory to use in asyncify.

Comment on lines +7 to +8
(memory (export "memory") 1 1)
(memory (export "unused") 1 1)
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(memory (export "memory") 1 1)
(memory (export "unused") 1 1)
(memory $mem (export "memory") 1 1)
(memory $ignore (export "unused") 1 1)

Indentation, and give them names. The names should make the test output easier to read. (Can update the output using ./scripts/update_lit_checks.py PATH-TO-TEST)

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(I intentionally did not use the export names, so that the test verifies we use the export names to pick the memory.)

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