[STLExtras] Add size() for ranges, and remove distance()

r332057 introduced distance() for ranges. Based on post-commit feedback,
this renames distance() to size(). The new size() is also only enabled
when the operation is O(1).

Differential Revision: https://reviews.llvm.org/D46976

llvm-svn: 332551

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Analysis/LazyCallGraph.cpp b/llvm/lib/Analysis/LazyCallGraph.cpp
index c001f55bb62..b1d585bfc68 100644
--- a/llvm/lib/Analysis/LazyCallGraph.cpp
+++ b/llvm/lib/Analysis/LazyCallGraph.cpp
@@ -1273,7 +1273,7 @@ LazyCallGraph::RefSCC::removeInternalRefEdge(Node &SourceN,
       // the removal hasn't changed the structure at all. This is an important
       // special case and we can directly exit the entire routine more
       // efficiently as soon as we discover it.
-      if (distance(RefSCCNodes) == NumRefSCCNodes) {
+      if (llvm::size(RefSCCNodes) == NumRefSCCNodes) {
         // Clear out the low link field as we won't need it.
         for (Node *N : RefSCCNodes)
           N->LowLink = -1;
@@ -1739,7 +1739,7 @@ static void printNode(raw_ostream &OS, LazyCallGraph::Node &N) {
 }
 
 static void printSCC(raw_ostream &OS, LazyCallGraph::SCC &C) {
-  ptrdiff_t Size = distance(C);
+  ptrdiff_t Size = size(C);
   OS << "    SCC with " << Size << " functions:\n";
 
   for (LazyCallGraph::Node &N : C)
@@ -1747,7 +1747,7 @@ static void printSCC(raw_ostream &OS, LazyCallGraph::SCC &C) {
 }
 
 static void printRefSCC(raw_ostream &OS, LazyCallGraph::RefSCC &C) {
-  ptrdiff_t Size = distance(C);
+  ptrdiff_t Size = size(C);
   OS << "  RefSCC with " << Size << " call SCCs:\n";
 
   for (LazyCallGraph::SCC &InnerC : C)