Comment #14 on issue 4132 by [email protected]: Improve performance
when break points are set.
https://code.google.com/p/v8/issues/detail?id=4132#c14
The following revision refers to this bug:
https://chromium.googlesource.com/v8/v8.git/+/9c269424278be4ae555e8af3a00c80ac59c3a33e
commit 9c269424278be4ae555e8af3a00c80ac59c3a33e
Author: mbrandy <[email protected]>
Date: Mon Jul 20 17:20:51 2015
PPC: Debugger: prepare code for debugging on a per-function basis.
Port 35c28ce0a742e58346d2dea009428cacd442040d
Original commit message:
Prior to this patch, we enter a global debug mode whenever a break point
is set. By entering this mode, all code is deoptimized and activated
frames are recompiled and redirected to newly compiled debug code.
After this patch, we only deoptimize/redirect for functions we want to
debug. Trigger for this is Debug::EnsureDebugInfo, and having DebugInfo
object attached to the SFI prevents optimization/inlining.
The result is that we can have optimized code for functions without
break
points alongside functions that do have break points, which are not
optimized.
[email protected], [email protected], [email protected]
BUG=v8:4132
LOG=N
Review URL: https://codereview.chromium.org/1244823002
Cr-Commit-Position: refs/heads/master@{#29764}
[modify]
http://crrev.com/9c269424278be4ae555e8af3a00c80ac59c3a33e/src/ppc/assembler-ppc-inl.h
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