[Webkit-unassigned] [Bug 122746] New: [sh4] Introduce const pools in LLINT
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Oct 14 02:45:48 PDT 2013
https://bugs.webkit.org/show_bug.cgi?id=122746
Summary: [sh4] Introduce const pools in LLINT
Product: WebKit
Version: 528+ (Nightly build)
Platform: Unspecified
OS/Version: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: jbriance at cisco.com
In current implementation of LLINT for sh4, immediate values outside range -128..127 are loaded this way:
mov.l .label, rx
bra out
nop
.balign 4
.label: .long immvalue
out:
These immediate values could be grouped in constant pools placed behind non-return opcodes to avoid useless branches and reduce code size.
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