AtomicExpr: make ASTStmtReader a friend and remove setters. Also fix saving

of an uninitialized Stmt* in serialization of __atomic_init and add a test of
atomics serialization.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154448 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 8 insertions, 23 deletions

diff --git a/lib/Serialization/ASTReaderStmt.cpp b/lib/Serialization/ASTReaderStmt.cpp
index 1c9817b955..2eeb090af0 100644
--- a/lib/Serialization/ASTReaderStmt.cpp
+++ b/lib/Serialization/ASTReaderStmt.cpp
@@ -790,21 +790,12 @@ void ASTStmtReader::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
 
 void ASTStmtReader::VisitAtomicExpr(AtomicExpr *E) {
   VisitExpr(E);
-  E->setOp(AtomicExpr::AtomicOp(Record[Idx++]));
-  E->setPtr(Reader.ReadSubExpr());
-  E->setOrder(Reader.ReadSubExpr());
-  E->setNumSubExprs(2);
-  if (E->getOp() != AtomicExpr::Load) {
-    E->setVal1(Reader.ReadSubExpr());
-    E->setNumSubExprs(3);
-  }
-  if (E->isCmpXChg()) {
-    E->setOrderFail(Reader.ReadSubExpr());
-    E->setVal2(Reader.ReadSubExpr());
-    E->setNumSubExprs(5);
-  }
-  E->setBuiltinLoc(ReadSourceLocation(Record, Idx));
-  E->setRParenLoc(ReadSourceLocation(Record, Idx));
+  E->Op = AtomicExpr::AtomicOp(Record[Idx++]);
+  E->NumSubExprs = AtomicExpr::getNumSubExprs(E->Op);
+  for (unsigned I = 0; I != E->NumSubExprs; ++I)
+    E->SubExprs[I] = Reader.ReadSubExpr();
+  E->BuiltinLoc = ReadSourceLocation(Record, Idx);
+  E->RParenLoc = ReadSourceLocation(Record, Idx);
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/lib/Serialization/ASTWriterStmt.cpp b/lib/Serialization/ASTWriterStmt.cpp
index eac7e1fb73..827caa026a 100644
--- a/lib/Serialization/ASTWriterStmt.cpp
+++ b/lib/Serialization/ASTWriterStmt.cpp
@@ -751,14 +751,8 @@ void ASTStmtWriter::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
 void ASTStmtWriter::VisitAtomicExpr(AtomicExpr *E) {
   VisitExpr(E);
   Record.push_back(E->getOp());
-  Writer.AddStmt(E->getPtr());
-  Writer.AddStmt(E->getOrder());
-  if (E->getOp() != AtomicExpr::Load)
-    Writer.AddStmt(E->getVal1());
-  if (E->isCmpXChg()) {
-    Writer.AddStmt(E->getOrderFail());
-    Writer.AddStmt(E->getVal2());
-  }
+  for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
+    Writer.AddStmt(E->getSubExprs()[I]);
   Writer.AddSourceLocation(E->getBuiltinLoc(), Record);
   Writer.AddSourceLocation(E->getRParenLoc(), Record);
   Code = serialization::EXPR_ATOMIC;