Add special-case mangling for Neon vector types.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118897 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Mangle.cpp b/lib/CodeGen/Mangle.cpp
index 9deb021..bcb3fe6 100644
--- a/lib/CodeGen/Mangle.cpp
+++ b/lib/CodeGen/Mangle.cpp
@@ -235,6 +235,7 @@
void mangleType(TemplateName);
void mangleBareFunctionType(const FunctionType *T,
bool MangleReturnType);
+ bool mangleNeonVectorType(const VectorType *T);
void mangleIntegerLiteral(QualType T, const llvm::APSInt &Value);
void mangleMemberExpr(const Expr *Base, bool IsArrow,
@@ -1402,6 +1403,41 @@
mangleType(T->getElementType());
}
+// ARM's ABI for Neon vector types specifies that they should be mangled as
+// if they are structs (to match ARM's initial implementation). If the
+// vector type is not one of the special types predefined by ARM, return false
+// so it will be mangled as an ordinary vector type.
+bool CXXNameMangler::mangleNeonVectorType(const VectorType *T) {
+ QualType EltType = T->getElementType();
+ if (!EltType->isBuiltinType())
+ return false;
+ unsigned EltBits = 0;
+ const char *EltName = 0;
+ switch (cast<BuiltinType>(EltType)->getKind()) {
+ case BuiltinType::SChar: EltBits = 8; EltName = "int8_t"; break;
+ case BuiltinType::UChar: EltBits = 8; EltName = "uint8_t"; break;
+ case BuiltinType::Short: EltBits = 16; EltName = "int16_t"; break;
+ case BuiltinType::UShort: EltBits = 16; EltName = "uint16_t"; break;
+ case BuiltinType::Int: EltBits = 32; EltName = "int32_t"; break;
+ case BuiltinType::UInt: EltBits = 32; EltName = "uint32_t"; break;
+ case BuiltinType::LongLong: EltBits = 64; EltName = "int64_t"; break;
+ case BuiltinType::ULongLong: EltBits = 64; EltName = "uint64_t"; break;
+ case BuiltinType::Float: EltBits = 32; EltName = "float32_t"; break;
+ default: return false;
+ }
+ const char *BaseName = 0;
+ unsigned BitSize = T->getNumElements() * EltBits;
+ if (BitSize == 64)
+ BaseName = "__simd64_";
+ else if (BitSize == 128)
+ BaseName = "__simd128_";
+ else
+ return false;
+ Out << strlen(BaseName) + strlen(EltName);
+ Out << BaseName << EltName;
+ return true;
+}
+
// GNU extension: vector types
// <type> ::= <vector-type>
// <vector-type> ::= Dv <positive dimension number> _
@@ -1410,6 +1446,8 @@
// <extended element type> ::= <element type>
// ::= p # AltiVec vector pixel
void CXXNameMangler::mangleType(const VectorType *T) {
+ if (T->getVectorKind() == VectorType::NeonVector && mangleNeonVectorType(T))
+ return;
Out << "Dv" << T->getNumElements() << '_';
if (T->getVectorKind() == VectorType::AltiVecPixel)
Out << 'p';