src/types.h - Issue 170943005: Narrows predicate for type bounds

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Unified Diff: src/types.h

Issue 170943005: Narrows predicate for type bounds (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Created 6 years, 10 months ago

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Index: src/types.h

diff --git a/src/types.h b/src/types.h

index 99a809dc10d06ae5108e2c64667982c867018d0a..48b39335b63dcd5c4da0f468f30afd4efaa409d4 100644

--- a/src/types.h

+++ b/src/types.h

@@ -560,6 +560,10 @@ struct BoundsImpl {

TypeHandle upper = Type::Intersect(b.upper, t, region);

return BoundsImpl(lower, upper);

}

+ bool Narrows(BoundsImpl that) {

+ return that.lower->Is(this->lower) && this->upper->Is(that.upper);

+ }

};

typedef BoundsImpl<ZoneTypeConfig> Bounds;

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