[ProfileData] Change std::sort to llvm::sort in response to r327219

Summary:
r327219 added wrappers to std::sort which randomly shuffle the container before sorting.
This will help in uncovering non-determinism caused due to undefined sorting
order of objects having the same key.

To make use of that infrastructure we need to invoke llvm::sort instead of std::sort.

Note: This patch is one of a series of patches to replace *all* std::sort to llvm::sort.
Refer the comments section in D44363 for a list of all the required patches.

Reviewers: bogner, vsk, eraman, ruiu

Reviewed By: ruiu

Subscribers: ruiu, llvm-commits

Differential Revision: https://reviews.llvm.org/D45139

llvm-svn: 330057
diff --git a/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp b/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp
index a415a5c..62f00d6 100644
--- a/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp
+++ b/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp
@@ -58,7 +58,7 @@
 void ProfileSummaryBuilder::computeDetailedSummary() {
   if (DetailedSummaryCutoffs.empty())
     return;
-  std::sort(DetailedSummaryCutoffs.begin(), DetailedSummaryCutoffs.end());
+  llvm::sort(DetailedSummaryCutoffs.begin(), DetailedSummaryCutoffs.end());
   auto Iter = CountFrequencies.begin();
   const auto End = CountFrequencies.end();