152918 2016-01-08 12:24:03 -0800 The FTL allocated spill slots for BinaryOps is sometimes inaccurate. 2016-01-09 07:25:12 -0800 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 mark.lam mark.lam commit-queue fpizlo keith_miller msaboff saam oldest_to_newest 1153946 0 mark.lam 2016-01-08 12:24:03 -0800 Patch coming. 1153949 1 saam 2016-01-08 12:37:42 -0800 For exception handling? 1153950 2 mark.lam 2016-01-08 12:38:38 -0800 (In reply to comment #1) > For exception handling? Yes. My bug. I'll upload a patch soon for your review. 1153954 3 268572 mark.lam 2016-01-08 12:49:08 -0800 Created attachment 268572 proposed fix. 1153962 4 fpizlo 2016-01-08 13:06:16 -0800 Which test does this fix? Please make sure you either fix some existing test failure, or you try to introduce a test. If it is not testable, please say why. 1153979 5 268572 saam 2016-01-08 13:26:54 -0800 Comment on attachment 268572 proposed fix. LGTM 1154145 6 268621 mark.lam 2016-01-09 07:23:23 -0800 Created attachment 268621 revised patch for landing. For the landing patch, I unskipped 2 tests which now pass with this fix: Source/JavaScriptCore/tests/stress/ftl-shr-exception.js Source/JavaScriptCore/tests/stress/ftl-xor-exception.js Also replaced the use of binaryUseKind() with isBinaryUseKind() because the bit ops may have operands that don't match in UseKind unless they are Untyped. isBinaryUseKind() is the right query to use for this scenario. This patch has passed all JSC tests including the 2 unskipped tests. 1154147 7 mark.lam 2016-01-09 07:25:12 -0800 Thanks for the reviews. 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