Maya Lekova 6a7872b7b8 [turbofan] Introduce a CheckStringAdd node instead of cons string lowering ... The new node is introduced for literal string addition and calling String.prototype.concat in the typed lowering phase. It later might get optimized away during redundancy elimination, keeping the performance of already existing benchmarks with string addition. In case the operation is about to throw (due to too long string being constructed) we just deoptimize, reusing the interpreter logic for creating the error. Modify relevant mjsunit and unit tests for string concatenation. Bug: v8:7902 Change-Id: Ie97d39534df4480fa8d4fe3ba276d02ed5e750e3 Reviewed-on: https://chromium-review.googlesource.com/1193342 Commit-Queue: Maya Lekova <mslekova@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#55482}		2018-08-29 09:34:26 +00:00
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run.js	[turbofan] Add JSTests for TurboFan	2018-08-20 14:12:13 +00:00
typedLowering.js	[turbofan] Introduce a CheckStringAdd node instead of cons string lowering	2018-08-29 09:34:26 +00:00