[Webkit-unassigned] [Bug 19803] New: Merge multiple loads into a single instruction
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Sat Jun 28 16:21:37 PDT 2008
https://bugs.webkit.org/show_bug.cgi?id=19803
Summary: Merge multiple loads into a single instruction
Product: WebKit
Version: 526+ (Nightly build)
Platform: All
OS/Version: All
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: cwzwarich at uwaterloo.ca
CC: mjs at apple.com
Since (load, load) is one of the most common instruction pairs on SunSpider and
load has one of the smallest instruction bodies, this sounds like a good idea.
However, all of my attempts to implement it lead to massive regressions on
SunSpider, even if I don't even use the opcode. This points to a random GCC
problem, so I'll post the code to see if we can fix it together.
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