diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/wasm-traversal.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/wasm-traversal.h b/src/wasm-traversal.h index 80378242a..212ded365 100644 --- a/src/wasm-traversal.h +++ b/src/wasm-traversal.h @@ -124,7 +124,12 @@ struct Walker : public VisitorType { // Copy debug info, if present. if (currFunction) { auto& debugLocations = currFunction->debugLocations; - if (!debugLocations.empty()) { + // Early exit if there is no debug info at all. Also, leave if we already + // have debug info on the new expression, which we don't want to trample: + // if there is no debug info we do want to copy, as a replacement + // operation suggests the new code plays the same role (it is an optimized + // version of the old), but if the code is already annotated, trust that. + if (!debugLocations.empty() && !debugLocations.count(expression)) { auto* curr = getCurrent(); auto iter = debugLocations.find(curr); if (iter != debugLocations.end()) { |