[clang] [CUDA] work around more __noinline__ conflicts with libc++ (PR #74123)

[Artem Belevich via cfe-commits]

https://github.com/Artem-B created https://github.com/llvm/llvm-project/pull/74123

https://github.com/llvm/llvm-project/pull/73838

>From 71e24fc704c82c11162313613691d09b9a653bd5 Mon Sep 17 00:00:00 2001
From: Artem Belevich <tra at google.com>
Date: Fri, 1 Dec 2023 10:37:08 -0800
Subject: [PATCH] [CUDA] work around more __noinline__ conflicts with libc++

https://github.com/llvm/llvm-project/pull/73838
---
 clang/lib/Headers/CMakeLists.txt         |  2 ++
 clang/lib/Headers/cuda_wrappers/__config | 10 ++++++++++
 clang/lib/Headers/cuda_wrappers/string   | 10 ++++++++++
 3 files changed, 22 insertions(+)
 create mode 100644 clang/lib/Headers/cuda_wrappers/__config
 create mode 100644 clang/lib/Headers/cuda_wrappers/string

diff --git a/clang/lib/Headers/CMakeLists.txt b/clang/lib/Headers/CMakeLists.txt
index fdd54c05eedf825..f562c354327f2fb 100644
--- a/clang/lib/Headers/CMakeLists.txt
+++ b/clang/lib/Headers/CMakeLists.txt
@@ -283,10 +283,12 @@ set(files
   )
 
 set(cuda_wrapper_files
+  cuda_wrappers/__config
   cuda_wrappers/algorithm
   cuda_wrappers/cmath
   cuda_wrappers/complex
   cuda_wrappers/new
+  cuda_wrappers/string
 )
 
 set(cuda_wrapper_bits_files
diff --git a/clang/lib/Headers/cuda_wrappers/__config b/clang/lib/Headers/cuda_wrappers/__config
new file mode 100644
index 000000000000000..04038b0fa3437ee
--- /dev/null
+++ b/clang/lib/Headers/cuda_wrappers/__config
@@ -0,0 +1,10 @@
+// CUDA headers define __noinline__ which interferes with libc++'s use of
+// `__attribute((__noinline__))`. In order to avoid compilation error,
+// temporarily unset __noinline__ when we include affected libstdc++ header.
+
+#pragma push_macro("__noinline__")
+#undef __noinline__
+#define __noinline__ __noinline__
+#include_next "__config"
+
+#pragma pop_macro("__noinline__")
diff --git a/clang/lib/Headers/cuda_wrappers/string b/clang/lib/Headers/cuda_wrappers/string
new file mode 100644
index 000000000000000..d612710393623b5
--- /dev/null
+++ b/clang/lib/Headers/cuda_wrappers/string
@@ -0,0 +1,10 @@
+// CUDA headers define __noinline__ which interferes with libc++'s use of
+// `__attribute((__noinline__))`. In order to avoid compilation error,
+// temporarily unset __noinline__ when we include affected libstdc++ header.
+
+#pragma push_macro("__noinline__")
+#undef __noinline__
+#define __noinline__ __noinline__
+#include_next "string"
+
+#pragma pop_macro("__noinline__")