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llvm-svn: 48583
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Chris Lattner 2008-03-20 04:46:13 +00:00
parent 110f66ca68
commit f166a78d79
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lib/Target/README.txt
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@ -772,3 +772,11 @@ ARM, we end up with calls to L___lshrdi3/L___ashldi3 in f, which is
badness. PPC64 misses f, f5 and f6. CellSPU aborts in isel.
//===---------------------------------------------------------------------===//
We do a number of simplifications in simplify libcalls to strength reduce
standard library functions, but we don't currently merge them together. For
example, it is useful to merge memcpy(a,b,strlen(b)) -> strcpy. This can only
be done safely if "b" isn't modified between the strlen and memcpy of course.
//===---------------------------------------------------------------------===//