commit 7ae267dc0f34a3dec1e08a8dac42ad780ebbc059
author Alexey Bataev <a.bataev@hotmail.com> Tue Jun 18 19:04:27 2019 +0000
committer Alexey Bataev <a.bataev@hotmail.com> Tue Jun 18 19:04:27 2019 +0000
tree 826a4218d029be66bd47588063d253fe03fefdc1
parent 10e6128c62ed4ef9e777a8dcb082f9f0a77d52eb

[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

diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index 707425e..b1ff460 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -6330,7 +6330,9 @@
 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)

clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp

diff --git a/clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp b/clang/test/OpenMP/nvptx_unsupported_type_codegen.cpp
index 167496c..2573daa 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;}