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| -rw-r--r-- | lib/Target/README.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index 5d7d8c30be..c64d7e0e6e 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -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. + +//===---------------------------------------------------------------------===// + |