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

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.

llvm-svn: 328636
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index 4a8540a..8397a1f 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -1388,8 +1388,8 @@
 
   // Sort by first use so that we emit the warnings in a deterministic order.
   SourceManager &SM = S.getSourceManager();
-  std::sort(UsesByStmt.begin(), UsesByStmt.end(),
-            [&SM](const StmtUsesPair &LHS, const StmtUsesPair &RHS) {
+  llvm::sort(UsesByStmt.begin(), UsesByStmt.end(),
+             [&SM](const StmtUsesPair &LHS, const StmtUsesPair &RHS) {
     return SM.isBeforeInTranslationUnit(LHS.first->getLocStart(),
                                         RHS.first->getLocStart());
   });
@@ -1527,8 +1527,8 @@
         // Sort the uses by their SourceLocations.  While not strictly
         // guaranteed to produce them in line/column order, this will provide
         // a stable ordering.
-        std::sort(vec->begin(), vec->end(),
-                  [](const UninitUse &a, const UninitUse &b) {
+        llvm::sort(vec->begin(), vec->end(),
+                   [](const UninitUse &a, const UninitUse &b) {
           // Prefer a more confident report over a less confident one.
           if (a.getKind() != b.getKind())
             return a.getKind() > b.getKind();
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 9f16333..68ad1cd 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -9375,7 +9375,7 @@
 
   TargetAttr::ParsedTargetAttr NewParsed = NewTA->parse();
   // Sort order doesn't matter, it just needs to be consistent.
-  std::sort(NewParsed.Features.begin(), NewParsed.Features.end());
+  llvm::sort(NewParsed.Features.begin(), NewParsed.Features.end());
 
   const auto *OldTA = OldFD->getAttr<TargetAttr>();
   if (!OldFD->isMultiVersion()) {
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 260dfa5..512a3df 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -5051,7 +5051,7 @@
     return;
 
   // Store tags sorted and without duplicates.
-  std::sort(Tags.begin(), Tags.end());
+  llvm::sort(Tags.begin(), Tags.end());
   Tags.erase(std::unique(Tags.begin(), Tags.end()), Tags.end());
 
   D->addAttr(::new (S.Context)
diff --git a/clang/lib/Sema/SemaLookup.cpp b/clang/lib/Sema/SemaLookup.cpp
index 692ce11..05bf303 100644
--- a/clang/lib/Sema/SemaLookup.cpp
+++ b/clang/lib/Sema/SemaLookup.cpp
@@ -187,7 +187,7 @@
     }
 
     void done() {
-      std::sort(list.begin(), list.end(), UnqualUsingEntry::Comparator());
+      llvm::sort(list.begin(), list.end(), UnqualUsingEntry::Comparator());
     }
 
     typedef ListTy::const_iterator const_iterator;
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index ae29e7e..dea1c2e 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -10688,8 +10688,8 @@
     // in general, want to list every possible builtin candidate.
   }
 
-  std::sort(Cands.begin(), Cands.end(),
-            CompareTemplateSpecCandidatesForDisplay(S));
+  llvm::sort(Cands.begin(), Cands.end(),
+             CompareTemplateSpecCandidatesForDisplay(S));
 
   // FIXME: Perhaps rename OverloadsShown and getShowOverloads()
   // for generalization purposes (?).
diff --git a/clang/lib/Sema/SemaType.cpp b/clang/lib/Sema/SemaType.cpp
index acf22cd..00bb21f 100644
--- a/clang/lib/Sema/SemaType.cpp
+++ b/clang/lib/Sema/SemaType.cpp
@@ -4861,8 +4861,8 @@
         if (Chunk.Fun.TypeQuals & Qualifiers::Restrict)
           RemovalLocs.push_back(Chunk.Fun.getRestrictQualifierLoc());
         if (!RemovalLocs.empty()) {
-          std::sort(RemovalLocs.begin(), RemovalLocs.end(),
-                    BeforeThanCompare<SourceLocation>(S.getSourceManager()));
+          llvm::sort(RemovalLocs.begin(), RemovalLocs.end(),
+                     BeforeThanCompare<SourceLocation>(S.getSourceManager()));
           RemovalRange = SourceRange(RemovalLocs.front(), RemovalLocs.back());
           Loc = RemovalLocs.front();
         }