[Webkit-unassigned] [Bug 142036] New: DFG SSA stack accesses shouldn't speak of VariableAccessDatas
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Feb 25 18:54:48 PST 2015
https://bugs.webkit.org/show_bug.cgi?id=142036
Bug ID: 142036
Summary: DFG SSA stack accesses shouldn't speak of
VariableAccessDatas
Classification: Unclassified
Product: WebKit
Version: 528+ (Nightly build)
Hardware: All
OS: All
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: fpizlo at apple.com
VariableAccessData is super useful in ThreadedCPS because it allows us to region about things that span basic blocks. It also allows us to do stepwise type inference on variables. But it's purely harmful in SSA. SSA shouldn't speak of it.
The main effect of this is that it will allow us to easily introduce new stack accesses.
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