From 3107f313f19a921469776ca498b6aaa0984feda0 Mon Sep 17 00:00:00 2001
From: Radu Salavat <radu.salavat@arm.com>
Date: Thu, 21 Dec 2023 16:37:51 +0200
Subject: [PATCH] [Flang, Clang] Enable and test 'rdynamic' flag (#75598)

Enable and test 'rdynamic' flag
---
 clang/include/clang/Driver/Options.td | 3 ++-
 flang/test/Driver/dynamic-linker.f90  | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 965d402af2d7b3..2b93ddf033499c 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -5308,7 +5308,8 @@ def rewrite_objc : Flag<["-"], "rewrite-objc">, Flags<[NoXarchOption]>,
 def rewrite_legacy_objc : Flag<["-"], "rewrite-legacy-objc">,
   Flags<[NoXarchOption]>,
   HelpText<"Rewrite Legacy Objective-C source to C++">;
-def rdynamic : Flag<["-"], "rdynamic">, Group<Link_Group>;
+def rdynamic : Flag<["-"], "rdynamic">, Group<Link_Group>,
+  Visibility<[ClangOption, FlangOption]>;
 def resource_dir : Separate<["-"], "resource-dir">,
   Flags<[NoXarchOption, HelpHidden]>,
   Visibility<[ClangOption, CC1Option, CLOption, DXCOption]>,
diff --git a/flang/test/Driver/dynamic-linker.f90 b/flang/test/Driver/dynamic-linker.f90
index df119c22a2ea51..1cbd407d21ce09 100644
--- a/flang/test/Driver/dynamic-linker.f90
+++ b/flang/test/Driver/dynamic-linker.f90
@@ -7,6 +7,7 @@
 ! RUN: %flang -### --target=x86_64-windows-msvc -rpath /path/to/dir -shared \
 ! RUN:     -static %s 2>&1 | FileCheck \
 ! RUN:     --check-prefixes=MSVC-LINKER-OPTIONS %s
+! RUN: %flang -### --target=aarch64-linux-none -rdynamic %s 2>&1 | FileCheck --check-prefixes=RDYNAMIC-LINKER-OPTION %s
 
 ! TODO: Could the linker have an extension or a suffix?
 ! GNU-LINKER-OPTIONS: "{{.*}}ld{{(.exe)?}}"
@@ -14,6 +15,9 @@
 ! GNU-LINKER-OPTIONS-SAME: "-static"
 ! GNU-LINKER-OPTIONS-SAME: "-rpath" "/path/to/dir"
 
+! RDYNAMIC-LINKER-OPTION: "{{.*}}ld"
+! RDYNAMIC-LINKER-OPTION-SAME: "-export-dynamic"
+
 ! For MSVC, adding -static does not add any additional linker options.
 ! MSVC-LINKER-OPTIONS: "{{.*}}link{{(.exe)?}}"
 ! MSVC-LINKER-OPTIONS-SAME: "-dll"