Comment #40 on issue 3996 by [email protected]: Improve typed array
performance
https://code.google.com/p/v8/issues/detail?id=3996#c40
The following revision refers to this bug:
https://chromium.googlesource.com/v8/v8.git/+/4e263bc581081c1fa925554943693f3e386fc815
commit 4e263bc581081c1fa925554943693f3e386fc815
Author: jochen <[email protected]>
Date: Mon Jul 20 15:17:53 2015
Add support for adding an external and a tagged pointer
This will be used to compute the base pointer of the new unified
representation for both on-heap and external typed arrays. The idea is
that either the external or the tagged pointer is 0 (although in
practice, if the tagged pointer is non-0, the external pointer will
contain the offset from the start of the on-heap typed array to the data
in the on-heap typed array).
The HAdd is marked as depending on new-space promotion, as the tagged
pointer might move during GC, and so the result of the addition needs to
be recomputed.
BUG=v8:3996
[email protected]
LOG=n
Review URL: https://codereview.chromium.org/1244693002
Cr-Commit-Position: refs/heads/master@{#29760}
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/arm/lithium-arm.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/arm64/lithium-arm64.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/hydrogen-instructions.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/hydrogen-instructions.h
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/ia32/lithium-ia32.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/mips/lithium-mips.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/mips64/lithium-mips64.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/ppc/lithium-ppc.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/x64/lithium-x64.cc
[modify]
http://crrev.com/4e263bc581081c1fa925554943693f3e386fc815/src/x87/lithium-x87.cc
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