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/Analysis/BlockFrequencyInfoImpl.cpp b/llvm/lib/Analysis/BlockFrequencyInfoImpl.cpp
index 9820988..08ebcc4 100644
--- a/llvm/lib/Analysis/BlockFrequencyInfoImpl.cpp
+++ b/llvm/lib/Analysis/BlockFrequencyInfoImpl.cpp
@@ -156,9 +156,9 @@
 
 static void combineWeightsBySorting(WeightList &Weights) {
   // Sort so edges to the same node are adjacent.
-  llvm::sort(Weights.begin(), Weights.end(),
-             [](const Weight &L,
-                const Weight &R) { return L.TargetNode < R.TargetNode; });
+  llvm::sort(Weights, [](const Weight &L, const Weight &R) {
+    return L.TargetNode < R.TargetNode;
+  });
 
   // Combine adjacent edges.
   WeightList::iterator O = Weights.begin();
@@ -707,7 +707,7 @@
          "Expected irreducible CFG; -loop-info is likely invalid");
   if (Headers.size() == InSCC.size()) {
     // Every block is a header.
-    llvm::sort(Headers.begin(), Headers.end());
+    llvm::sort(Headers);
     return;
   }
 
@@ -742,8 +742,8 @@
     Others.push_back(Irr.Node);
     LLVM_DEBUG(dbgs() << "  => other = " << BFI.getBlockName(Irr.Node) << "\n");
   }
-  llvm::sort(Headers.begin(), Headers.end());
-  llvm::sort(Others.begin(), Others.end());
+  llvm::sort(Headers);
+  llvm::sort(Others);
 }
 
 static void createIrreducibleLoop(