From 7ae267dc0f34a3dec1e08a8dac42ad780ebbc059 Mon Sep 17 00:00:00 2001
From: Alexey Bataev <a.bataev@hotmail.com>
Date: Tue, 18 Jun 2019 19:04:27 +0000
Subject: [PATCH] [OPENMP][NVPTX]Correct codegen for 128 bit long double.

If the host uses 128 bit long doubles, the compiler should generate correct code for NVPTX devices. If the return type has 128 bit long doubles, in LLVM IR this type must be coerced to int array instead.

llvm-svn: 363720
---
 clang/lib/CodeGen/TargetInfo.cpp                     | 4 +++-
 clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp | 8 +++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index 707425ea8130..b1ff46049fac 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -6330,7 +6330,9 @@ private:
 static bool isUnsupportedType(ASTContext &Context, QualType T) {
   if (!Context.getTargetInfo().hasFloat16Type() && T->isFloat16Type())
     return true;
-  if (!Context.getTargetInfo().hasFloat128Type() && T->isFloat128Type())
+  if (!Context.getTargetInfo().hasFloat128Type() &&
+      (T->isFloat128Type() ||
+       (T->isRealFloatingType() && Context.getTypeSize(T) == 128)))
     return true;
   if (!Context.getTargetInfo().hasInt128Type() && T->isIntegerType() &&
       Context.getTypeSize(T) > 64)
diff --git a/clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp b/clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp
index 167496cb84fc..2573daaa4184 100644
--- a/clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp
+++ b/clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp
@@ -1,6 +1,8 @@
 // Test target codegen - host bc file has to be created first.
 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple x86_64-unknown-linux -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-host.bc
-// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -aux-triple x86_64-unknown-linux -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-host.bc -o - | FileCheck %s
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -aux-triple x86_64-unknown-linux -fopenmp-targets=nvptx64-nvidia-cuda -aux-triple x86_64-unknown-linux -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-host.bc -o - | FileCheck %s
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-linux-gnu -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-host.bc
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -aux-triple powerpc64le-unknown-linux-gnu -fopenmp-targets=nvptx64-nvidia-cuda -aux-triple x86_64-unknown-linux -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-host.bc -o - | FileCheck %s
 // expected-no-diagnostics
 
 // CHECK-DAG: [[T:%.+]] = type {{.+}}, fp128,
@@ -8,7 +10,11 @@
 
 struct T {
   char a;
+#ifndef _ARCH_PPC
   __float128 f;
+#else
+  long double f;
+#endif
   char c;
   T() : a(12), f(15) {}
   T &operator+(T &b) { f += b.a; return *this;}