[PATCH] D101032: [SimplifyLibCalls][NFC] Use StringRef::back instead explicit indexing.

[Dawid Jurczak via Phabricator via llvm-commits]

yurai007 created this revision.
yurai007 added reviewers: xbolva00, spatel, fhahn, lebedev.ri.
Herald added subscribers: arphaman, hiraditya.
yurai007 requested review of this revision.
Herald added a project: LLVM.
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Split off from D100724 <https://reviews.llvm.org/D100724>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101032

Files:
  llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp


Index: llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
===================================================================
--- llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -2386,7 +2386,7 @@
   }
 
   // printf("foo\n") --> puts("foo")
-  if (FormatStr[FormatStr.size() - 1] == '\n' &&
+  if (FormatStr.back() == '\n' &&
       FormatStr.find('%') == StringRef::npos) { // No format characters.
     // Create a string literal with no \n on it.  We expect the constant merge
     // pass to be run after this pass, to merge duplicate strings.


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