Swift: allow modifying frontend outputs

Author: redsun82

swift/third_party/load.bzl

@@ -33,6 +33,9 @@ def load_dependencies(repository_name):
             build_file = _get_build(repository_name, "swift-llvm-support"),
             sha256 = sha256,
             patch_args = ["-p1"],
+            patches = [
+                _get_patch(repository_name, "swift-llvm-support", "allow_modfying_output"),
+            ],
         )
 
     http_archive(

swift/third_party/swift-llvm-support/patches/allow_modfying_output.patch

@@ -0,0 +1,12 @@
+We want to be able to redirect module output options to an internal artifact storage.
+--- a/include/swift/Frontend/FrontendInputsAndOutputs.h	2022-11-30 12:57:18.000000000 +0100
++++ b/include/swift/Frontend/FrontendInputsAndOutputs.h	2022-12-08 10:30:43.286040435 +0100
+@@ -182,8 +182,6 @@
+                            llvm::MemoryBuffer *buffer = nullptr);
+
+   // Outputs
+-
+-private:
+   friend class ArgsToFrontendOptionsConverter;
+   friend struct InterfaceSubContextDelegateImpl;
+   void setMainAndSupplementaryOutputs(