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authorFrank Emrich <git@emrich.io>2024-01-11 21:22:43 +0000
committerGitHub <noreply@github.com>2024-01-11 13:22:43 -0800
commitb4dee3dc05834ada8bf94e3e925186bc8b430c30 (patch)
tree19d3150e7438803274c1dfc03be56dff83309fe7 /src/ir/cost.h
parente5948a939eb6610f1cb7742df8c54f6d17389b83 (diff)
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Typed continuations: resume instructions (#6083)
This PR is part of a series that adds basic support for the [typed continuations proposal](https://github.com/wasmfx/specfx). This particular PR adds support for the `resume` instruction. The most notable missing feature is validation, which is not implemented, yet.
Diffstat (limited to 'src/ir/cost.h')
-rw-r--r--src/ir/cost.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/ir/cost.h b/src/ir/cost.h
index 0e87317a6..821e46524 100644
--- a/src/ir/cost.h
+++ b/src/ir/cost.h
@@ -726,6 +726,11 @@ struct CostAnalyzer : public OverriddenVisitor<CostAnalyzer, CostType> {
return 8 + visit(curr->ref) + visit(curr->num);
}
+ CostType visitResume(Resume* curr) {
+ // Inspired by indirect calls, but twice the cost.
+ return 12 + visit(curr->cont);
+ }
+
private:
CostType nullCheckCost(Expression* ref) {
// A nullable type requires a bounds check in most VMs.