Reviewers: Yang,
Description:
[runtime] Remove useless %_IsUndetectableObject intrinsic.
Instead of using a sequence
if (something == null && !IS_UNDETECTABLE(something))) { ... }
which will be true if something is either null or undefined, it is
way simpler and way more efficient to just write
if (something === null || something === (void 0)) { ... }
instead, which allows the compiler(s) to generate pretty decent code
without any need to resort to type feedback from a CompareNil IC.
[email protected]
Please review this at https://codereview.chromium.org/1288623003/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+6, -220 lines):
M src/full-codegen/arm/full-codegen-arm.cc
M src/full-codegen/arm64/full-codegen-arm64.cc
M src/full-codegen/full-codegen.h
M src/full-codegen/ia32/full-codegen-ia32.cc
M src/full-codegen/mips/full-codegen-mips.cc
M src/full-codegen/mips64/full-codegen-mips64.cc
M src/full-codegen/ppc/full-codegen-ppc.cc
M src/full-codegen/x64/full-codegen-x64.cc
M src/full-codegen/x87/full-codegen-x87.cc
M src/hydrogen.h
M src/hydrogen.cc
M src/macros.py
M src/messages.js
M src/runtime/runtime.h
M src/runtime/runtime-object.cc
M src/v8natives.js
--
--
v8-dev mailing list
[email protected]
http://groups.google.com/group/v8-dev
---
You received this message because you are subscribed to the Google Groups "v8-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
