[Power9] Update fp128 as a valid homogenous aggregate base type

Update clang to treat fp128 as a valid base type for homogeneous aggregate
passing and returning.

Differential Revision: https://reviews.llvm.org/D48044

llvm-svn: 336308

1 files changed, 9 insertions, 4 deletions

diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index 3fcafbbfd37..2078ea1fea0 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -4619,7 +4619,9 @@ bool PPC64_SVR4_ABIInfo::isHomogeneousAggregateBaseType(QualType Ty) const {
   if (const BuiltinType *BT = Ty->getAs<BuiltinType>()) {
     if (BT->getKind() == BuiltinType::Float ||
         BT->getKind() == BuiltinType::Double ||
-        BT->getKind() == BuiltinType::LongDouble) {
+        BT->getKind() == BuiltinType::LongDouble ||
+        (getContext().getTargetInfo().hasFloat128Type() &&
+          (BT->getKind() == BuiltinType::Float128))) {
       if (IsSoftFloatABI)
         return false;
       return true;
@@ -4634,10 +4636,13 @@ bool PPC64_SVR4_ABIInfo::isHomogeneousAggregateBaseType(QualType Ty) const {
 
 bool PPC64_SVR4_ABIInfo::isHomogeneousAggregateSmallEnough(
     const Type *Base, uint64_t Members) const {
-  // Vector types require one register, floating point types require one
-  // or two registers depending on their size.
+  // Vector and fp128 types require one register, other floating point types
+  // require one or two registers depending on their size.
   uint32_t NumRegs =
-      Base->isVectorType() ? 1 : (getContext().getTypeSize(Base) + 63) / 64;
+      ((getContext().getTargetInfo().hasFloat128Type() &&
+          Base->isFloat128Type()) ||
+        Base->isVectorType()) ? 1
+                              : (getContext().getTypeSize(Base) + 63) / 64;
 
   // Homogeneous Aggregates may occupy at most 8 registers.
   return Members * NumRegs <= 8;