Commit Graph

1 Commits

Author SHA1 Message Date
Mike Stanton
f78392d53f [Turbofan] Improve serializer environment handling for catch blocks
The serializer doesn't correctly propagate environment information
from try blocks into their catch handlers, and this impedes
optimizations that fire when we compile concurrently.

function bar(x) {
  try {
    boom(); // throws
  } catch(_) {
    return x.a;
  }
}

function foo() { return bar({a: 42}); }

When foo is optimized, we can normally return the constant 42
directly. This CL makes that work for concurrent inlining.

Bug: v8:7790
Change-Id: Id1c5fd06d51ec6fe69ab10fbd65afd6fa7e76820
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1863193
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64352}
2019-10-17 14:20:39 +00:00