This diff includes changes for supporting the following types.

```

// Primary fixed point types
signed short _Accum s_short_accum;
signed _Accum s_accum;
signed long _Accum s_long_accum;
unsigned short _Accum u_short_accum;
unsigned _Accum u_accum;
unsigned long _Accum u_long_accum;

// Aliased fixed point types
short _Accum short_accum;
_Accum accum;
long _Accum long_accum;

```

This diff only allows for declaration of the fixed point types. Assignment and other operations done on fixed point types according to http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf will be added in future patches. The saturated versions of these types and the equivalent `_Fract` types will also be added in future patches.

The tests included are for asserting that we can declare these types.

Differential Revision: https://reviews.llvm.org/D46084

llvm-svn: 333814

2 files changed, 36 insertions, 0 deletions

diff --git a/clang/lib/Serialization/ASTCommon.cpp b/clang/lib/Serialization/ASTCommon.cpp
index 54cea92042a..f5584cc04d1 100644
--- a/clang/lib/Serialization/ASTCommon.cpp
+++ b/clang/lib/Serialization/ASTCommon.cpp
@@ -91,6 +91,24 @@ serialization::TypeIdxFromBuiltin(const BuiltinType *BT) {
   case BuiltinType::LongDouble:
     ID = PREDEF_TYPE_LONGDOUBLE_ID;
     break;
+  case BuiltinType::ShortAccum:
+    ID = PREDEF_TYPE_SHORT_ACCUM_ID;
+    break;
+  case BuiltinType::Accum:
+    ID = PREDEF_TYPE_ACCUM_ID;
+    break;
+  case BuiltinType::LongAccum:
+    ID = PREDEF_TYPE_LONG_ACCUM_ID;
+    break;
+  case BuiltinType::UShortAccum:
+    ID = PREDEF_TYPE_USHORT_ACCUM_ID;
+    break;
+  case BuiltinType::UAccum:
+    ID = PREDEF_TYPE_UACCUM_ID;
+    break;
+  case BuiltinType::ULongAccum:
+    ID = PREDEF_TYPE_ULONG_ACCUM_ID;
+    break;
   case BuiltinType::Float16:
     ID = PREDEF_TYPE_FLOAT16_ID;
     break;
diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index 391e3504459..4dd79720270 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -6819,6 +6819,24 @@ QualType ASTReader::GetType(TypeID ID) {
     case PREDEF_TYPE_LONGDOUBLE_ID:
       T = Context.LongDoubleTy;
       break;
+    case PREDEF_TYPE_SHORT_ACCUM_ID:
+      T = Context.ShortAccumTy;
+      break;
+    case PREDEF_TYPE_ACCUM_ID:
+      T = Context.AccumTy;
+      break;
+    case PREDEF_TYPE_LONG_ACCUM_ID:
+      T = Context.LongAccumTy;
+      break;
+    case PREDEF_TYPE_USHORT_ACCUM_ID:
+      T = Context.UnsignedShortAccumTy;
+      break;
+    case PREDEF_TYPE_UACCUM_ID:
+      T = Context.UnsignedAccumTy;
+      break;
+    case PREDEF_TYPE_ULONG_ACCUM_ID:
+      T = Context.UnsignedLongAccumTy;
+      break;
     case PREDEF_TYPE_FLOAT16_ID:
       T = Context.Float16Ty;
       break;