Remember the regparm attribute in FunctionType::ExtInfo.

Fixes PR3782.

llvm-svn: 99940

2 files changed, 8 insertions, 5 deletions

diff --git a/clang/lib/Frontend/PCHReader.cpp b/clang/lib/Frontend/PCHReader.cpp
index ceb7a6bf57b..579f827e16b 100644
--- a/clang/lib/Frontend/PCHReader.cpp
+++ b/clang/lib/Frontend/PCHReader.cpp
@@ -2075,20 +2075,21 @@ QualType PCHReader::ReadTypeRecord(uint64_t Offset) {
   }
 
   case pch::TYPE_FUNCTION_NO_PROTO: {
-    if (Record.size() != 3) {
+    if (Record.size() != 4) {
       Error("incorrect encoding of no-proto function type");
       return QualType();
     }
     QualType ResultType = GetType(Record[0]);
-    FunctionType::ExtInfo Info(Record[1], (CallingConv)Record[2]);
+    FunctionType::ExtInfo Info(Record[1], Record[2], (CallingConv)Record[3]);
     return Context->getFunctionNoProtoType(ResultType, Info);
   }
 
   case pch::TYPE_FUNCTION_PROTO: {
     QualType ResultType = GetType(Record[0]);
     bool NoReturn = Record[1];
-    CallingConv CallConv = (CallingConv)Record[2];
-    unsigned Idx = 3;
+    unsigned RegParm = Record[2];
+    CallingConv CallConv = (CallingConv)Record[3];
+    unsigned Idx = 4;
     unsigned NumParams = Record[Idx++];
     llvm::SmallVector<QualType, 16> ParamTypes;
     for (unsigned I = 0; I != NumParams; ++I)
@@ -2105,7 +2106,8 @@ QualType PCHReader::ReadTypeRecord(uint64_t Offset) {
                                     isVariadic, Quals, hasExceptionSpec,
                                     hasAnyExceptionSpec, NumExceptions,
                                     Exceptions.data(),
-                                    FunctionType::ExtInfo(NoReturn, CallConv));
+                                    FunctionType::ExtInfo(NoReturn, RegParm,
+                                                          CallConv));
   }
 
   case pch::TYPE_UNRESOLVED_USING:
diff --git a/clang/lib/Frontend/PCHWriter.cpp b/clang/lib/Frontend/PCHWriter.cpp
index b4fbd17bd67..5086b488f6d 100644
--- a/clang/lib/Frontend/PCHWriter.cpp
+++ b/clang/lib/Frontend/PCHWriter.cpp
@@ -143,6 +143,7 @@ void PCHTypeWriter::VisitFunctionType(const FunctionType *T) {
   Writer.AddTypeRef(T->getResultType(), Record);
   FunctionType::ExtInfo C = T->getExtInfo();
   Record.push_back(C.getNoReturn());
+  Record.push_back(C.getRegParm());
   // FIXME: need to stabilize encoding of calling convention...
   Record.push_back(C.getCC());
 }