From 956d2d89d530012885c1f88c87bf8b872c187b70 Mon Sep 17 00:00:00 2001 From: Thomas Lively Date: Thu, 25 Apr 2024 14:55:12 -0700 Subject: [Parser] Enable the new text parser by default (#6371) The new text parser is faster and more standards compliant than the old text parser. Enable it by default in wasm-opt and update the tests to reflect the slightly different results it produces. Besides following the spec, the new parser differs from the old parser in that it: - Does not synthesize `loop` and `try` labels unnecessarily - Synthesizes different block names in some cases - Parses exports in a different order - Parses `nop`s instead of empty blocks for empty control flow arms - Does not support parsing Poppy IR - Produces different error messages - Cannot parse `pop` except as the first instruction inside a `catch` --- CHANGELOG.md | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'CHANGELOG.md') diff --git a/CHANGELOG.md b/CHANGELOG.md index 80d552130..a44aedcef 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -15,9 +15,13 @@ full changeset diff at the end of each section. Current Trunk ------------- - - (If new wat parser is enabled) Source map comments on `else` branches must - now be placed above the instruction inside the `else` branch rather than on - the `else` branch itself. + - The new, standards-compliant text parser is now the default. `wasm-opt` has a + `--deprecated-wat-parser` flag that will switch back to using the old text + parser, but that option will go away soon. + - Source map comments on `else` branches must now be placed above the + instruction inside the `else` branch rather than on the `else` branch itself. + - Source map locations from instructions are no longer automatically propagated + to function epilogues. - Add a new `BinaryenModuleReadWithFeatures` function to the C API that allows to configure which features to enable in the parser. - The build-time option to use legacy WasmGC opcodes is removed. -- cgit v1.2.3