[Webkit-unassigned] [Bug 170974] New: Should not need to nop-pad between register allocation and a label
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Apr 18 18:40:17 PDT 2017
https://bugs.webkit.org/show_bug.cgi?id=170974
Bug ID: 170974
Summary: Should not need to nop-pad between register allocation
and a label
Product: WebKit
Version: WebKit 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
If I have code like:
GPRTemporary blah
GPRReg blahGPR = blah.gpr()
MacroAssembler::Label = m_jit.label();
It may currently fail register allocation validation, presumably because the validation thinks that the label is inside the register allocation rather than after it. The current workaround is to insert a nop:
GPRTemporary blah
GPRReg blahGPR = blah.gpr()
m_jit.nop();
MacroAssembler::Label = m_jit.label();
We should probably fix that eventually.
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