http://llvm.org/bugs/show_bug.cgi?id=2852
Summary: fold load (strchr/memchr ptr, c) --> c
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Scalar Optimizations
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [email protected]
The pointer returned by the strchr/memchr family is usually tested for validity
(null-ness) and then dereferenced, possibly as part of a loop.
We know the value that the pointer points to; it's the one passed in to as the
second parameter to the function call.
There's no LLVM intrinsic for memchr though. Where should this sort of thing be
done? In simplify-libcalls?
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