[flang][runtime] Added missing routines into CUDA build.

[vzakhari]

Apparently, nvcc does not compile for device the routines whose definitions
are not marked with device attribute (note that the forward declarations
are already marked). It looks like it is different for class members,
i.e. marking just the declarations is enough.

[llvmbot]

@llvm/pr-subscribers-flang-runtime

Author: Slava Zakharin (vzakhari)

Changes

Apparently, nvcc does not compile for device the routines whose definitions
are not marked with device attribute (note that the forward declarations
are already marked). It looks like it is different for class members,
i.e. marking just the declarations is enough.

---

Full diff: https://github.com/llvm/llvm-project/pull/90272.diff

3 Files Affected:

• (modified) flang/runtime/CMakeLists.txt (+1)
• (modified) flang/runtime/file.cpp (+6-6)
• (modified) flang/runtime/namelist.cpp (+1-1)

diff --git a/flang/runtime/CMakeLists.txt b/flang/runtime/CMakeLists.txt
index bdd0e07bbfd4d1..3c0240b7079aa5 100644
--- a/flang/runtime/CMakeLists.txt
+++ b/flang/runtime/CMakeLists.txt
@@ -193,6 +193,7 @@ set(supported_files
   environment.cpp
   extrema.cpp
   external-unit.cpp
+  file.cpp
   findloc.cpp
   format.cpp
   inquiry.cpp
diff --git a/flang/runtime/file.cpp b/flang/runtime/file.cpp
index acd5d33d4bb87b..79db17e70acd90 100644
--- a/flang/runtime/file.cpp
+++ b/flang/runtime/file.cpp
@@ -457,22 +457,22 @@ std::int64_t SizeInBytes(const char *path) {
   return -1;
 }
 #else // defined(RT_DEVICE_COMPILATION)
-bool IsATerminal(int fd) {
+RT_API_ATTRS bool IsATerminal(int fd) {
   Terminator{__FILE__, __LINE__}.Crash("%s: unsupported", RT_PRETTY_FUNCTION);
 }
-bool IsExtant(const char *path) {
+RT_API_ATTRS bool IsExtant(const char *path) {
   Terminator{__FILE__, __LINE__}.Crash("%s: unsupported", RT_PRETTY_FUNCTION);
 }
-bool MayRead(const char *path) {
+RT_API_ATTRS bool MayRead(const char *path) {
   Terminator{__FILE__, __LINE__}.Crash("%s: unsupported", RT_PRETTY_FUNCTION);
 }
-bool MayWrite(const char *path) {
+RT_API_ATTRS bool MayWrite(const char *path) {
   Terminator{__FILE__, __LINE__}.Crash("%s: unsupported", RT_PRETTY_FUNCTION);
 }
-bool MayReadAndWrite(const char *path) {
+RT_API_ATTRS bool MayReadAndWrite(const char *path) {
   Terminator{__FILE__, __LINE__}.Crash("%s: unsupported", RT_PRETTY_FUNCTION);
 }
-std::int64_t SizeInBytes(const char *path) {
+RT_API_ATTRS std::int64_t SizeInBytes(const char *path) {
   Terminator{__FILE__, __LINE__}.Crash("%s: unsupported", RT_PRETTY_FUNCTION);
 }
 #endif // defined(RT_DEVICE_COMPILATION)
diff --git a/flang/runtime/namelist.cpp b/flang/runtime/namelist.cpp
index b9eed2101ecfc9..af092de70f7819 100644
--- a/flang/runtime/namelist.cpp
+++ b/flang/runtime/namelist.cpp
@@ -596,7 +596,7 @@ bool IODEF(InputNamelist)(Cookie cookie, const NamelistGroup &group) {
   return true;
 }
 
-bool IsNamelistNameOrSlash(IoStatementState &io) {
+RT_API_ATTRS bool IsNamelistNameOrSlash(IoStatementState &io) {
   if (auto *listInput{
           io.get_if<ListDirectedStatementState<Direction::Input>>()}) {
     if (listInput->inNamelistSequence()) {