Bug 151313

Summary:	FTLLazySlowPaths should be able to handle being passed the zero register as a location
Product:	WebKit	Reporter:	Saam Barati <saam>
Component:	JavaScriptCore	Assignee:	Saam Barati <saam>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	benjamin, fpizlo, ggaren, gskachkov, keith_miller, mark.lam, msaboff, oliver, sukolsak, ysuzuki
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Saam Barati 2015-11-16 10:59:29 PST

On ARM64, SP and ZR are the same register and the meaning of the register is dependent on the current instruction.
LLVM might pass us ZR (which we interpret as SP) as the location of some argument when it proves that the
argument is zero. We should be able to gracefully handle this.

Comment 1 Saam Barati 2015-11-16 11:02:08 PST


*** This bug has been marked as a duplicate of bug 151193 ***