llvm::sort(C.begin(), C.end(), ...) -> llvm::sort(C, ...)

Summary: The convenience wrapper in STLExtras is available since rL342102.

Reviewers: dblaikie, javed.absar, JDevlieghere, andreadb

Subscribers: MatzeB, sanjoy, arsenm, dschuff, mehdi_amini, sdardis, nemanjai, jvesely, nhaehnle, sbc100, jgravelle-google, eraman, aheejin, kbarton, JDevlieghere, javed.absar, gbedwell, jrtc27, mgrang, atanasyan, steven_wu, george.burgess.iv, dexonsmith, kristina, jsji, llvm-commits

Differential Revision: https://reviews.llvm.org/D52573

llvm-svn: 343163
diff --git a/llvm/lib/Transforms/Utils/LowerSwitch.cpp b/llvm/lib/Transforms/Utils/LowerSwitch.cpp
index e99ecfe..d019a44 100644
--- a/llvm/lib/Transforms/Utils/LowerSwitch.cpp
+++ b/llvm/lib/Transforms/Utils/LowerSwitch.cpp
@@ -372,7 +372,7 @@
     Cases.push_back(CaseRange(Case.getCaseValue(), Case.getCaseValue(),
                               Case.getCaseSuccessor()));
 
-  llvm::sort(Cases.begin(), Cases.end(), CaseCmp());
+  llvm::sort(Cases, CaseCmp());
 
   // Merge case into clusters
   if (Cases.size() >= 2) {