[NFC][VPlan] Wrap PlainCFGBuilder with an anonymous namespace.

Summary: It's internal to the VPlanHCFGBuilder and should not be visible outside of its translation unit. Reviewers: dcaballe, fhahn Reviewed By: fhahn Subscribers: rengolin, bollu, tschuett, llvm-commits, rkruppe Differential Revision: https://reviews.llvm.org/D47312 llvm-svn: 333187
llvm · May 24, 2018 · d34b765 · d34b765
1 parent 43cb451
commit d34b765
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp b/llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
@@ -30,6 +30,7 @@
 
 using namespace llvm;
 
+namespace {
 // Class that is used to build the plain CFG for the incoming IR.
 class PlainCFGBuilder {
 private:
@@ -74,6 +75,7 @@ class PlainCFGBuilder {
   // Build the plain CFG and return its Top Region.
   VPRegionBlock *buildPlainCFG();
 };
+} // anonymous namespace
 
 // Return true if \p Inst is an incoming Instruction to be ignored in the VPlan
 // representation.