[PATCH] D47059: [InstCombine] Calloc-ed strings optimizations

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 created this revision.
xbolva00 added a reviewer: efriedma.
Herald added a subscriber: llvm-commits.

Cases:
strlen(calloc(...)) -> 0
strcat(calloc(...), str) -> strcpy(calloc(...), str))
strncat(calloc(...), str, len) -> strncpy(calloc(...), str, len))


Repository:
  rL LLVM

https://reviews.llvm.org/D47059

Files:
  lib/Transforms/Utils/SimplifyLibCalls.cpp
  test/Transforms/InstCombine/zero-string.ll

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