Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool>

This is to be consistent with StringSet and ultimately with the standard
library's associative container insert function.

This lead to updating SmallSet::insert to return pair<iterator, bool>,
and then to update SmallPtrSet::insert to return pair<iterator, bool>,
and then to update all the existing users of those functions...

llvm-svn: 222334

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index 0b2e22486e3..8facbc28e40 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -1976,7 +1976,7 @@ bool FastISel::handlePHINodesInSuccessorBlocks(const BasicBlock *LLVMBB) {
 
     // If this terminator has multiple identical successors (common for
     // switches), only handle each succ once.
-    if (!SuccsHandled.insert(SuccMBB))
+    if (!SuccsHandled.insert(SuccMBB).second)
       continue;
 
     MachineBasicBlock::iterator MBBI = SuccMBB->begin();