[PATCH] D18656: [SimplifyLibCalls] Strip dead code in printf() transformations

[Sanjay Patel via llvm-commits]

spatel added a comment.

In http://reviews.llvm.org/D18656#390825, @filcab wrote:

> Do you want to add an assert somewhere?
>  Just in case :-)


I think we're already safe here. On failure (eg, putchar is not available), emitPutChar() returns nullptr, so optimizePrintFString() will also return nullptr to signal to its caller that the transform didn't work.


Repository:
  rL LLVM

http://reviews.llvm.org/D18656