[Webkit-unassigned] [Bug 23941] New: Remove (/reduce) use of hard-wired register names from the JIT.
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Feb 12 18:47:04 PST 2009
https://bugs.webkit.org/show_bug.cgi?id=23941
Summary: Remove (/reduce) use of hard-wired register names from
the JIT.
Product: WebKit
Version: 528+ (Nightly build)
Platform: Macintosh
OS/Version: Mac OS X 10.5
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: barraclough at apple.com
Currently there is no abstraction of registers used in the JIT, which has a
number of negative consequences. Hard-wiring x86 register names makes the JIT
less portable to other platforms, and prevents us from performing dynamic
register allocation to attempt to maintain more temporary values in machine
registers. (The latter will be more important on x86-64, where we have more
registers to make use of).
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