From 6316508c3914c322888cc991670ae41e60367ab6 Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Sun, 12 Jan 2014 06:54:56 +0000
Subject: [PATCH] SPARC passes non-trivial C++ objects indirectly like
 everybody else.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199037 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/TargetInfo.cpp      |  5 +++++
 test/CodeGenCXX/sparcv9-abi.cpp | 26 ++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 test/CodeGenCXX/sparcv9-abi.cpp

diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp
index da627756c8..2fbbda503f 100644
--- a/lib/CodeGen/TargetInfo.cpp
+++ b/lib/CodeGen/TargetInfo.cpp
@@ -5362,6 +5362,11 @@ SparcV9ABIInfo::classifyType(QualType Ty, unsigned SizeLimit) const {
   if (!isAggregateTypeForABI(Ty))
     return ABIArgInfo::getDirect();
 
+  // If a C++ object has either a non-trivial copy constructor or a non-trivial
+  // destructor, it is passed with an explicit indirect pointer / sret pointer.
+  if (CGCXXABI::RecordArgABI RAA = getRecordArgABI(Ty, getCXXABI()))
+    return ABIArgInfo::getIndirect(0, RAA == CGCXXABI::RAA_DirectInMemory);
+
   // This is a small aggregate type that should be passed in registers.
   // Build a coercion type from the LLVM struct type.
   llvm::StructType *StrTy = dyn_cast<llvm::StructType>(CGT.ConvertType(Ty));
diff --git a/test/CodeGenCXX/sparcv9-abi.cpp b/test/CodeGenCXX/sparcv9-abi.cpp
new file mode 100644
index 0000000000..128d648ceb
--- /dev/null
+++ b/test/CodeGenCXX/sparcv9-abi.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -triple sparcv9-unknown-unknown -emit-llvm %s -o - | FileCheck %s
+
+struct pod {
+  int a, b;
+};
+
+void f0();
+void f1(struct pod);
+
+struct notpod {
+  int a, b;
+  ~notpod() { f0(); }
+};
+
+void f2(struct notpod);
+
+// CHECK-LABEL: caller
+// CHECK: call void @_Z2f13pod(i64
+// CHECK: call void @_Z2f26notpod(%struct.notpod*
+void caller()
+{
+  pod p1;
+  notpod p2;
+  f1(p1);
+  f2(p2);
+}
-- 
2.40.0