[clang] [llvm] [HIP][MacOS] Mach-O support and Darwin toolchain fixes (PR #183991)

[Paulius Velesko via llvm-commits]

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@@ -141,6 +166,15 @@ offloading::getOffloadEntryArray(Module &M, StringRef SectionName) {
     DummyEntry->setSection(SectionName);
     DummyEntry->setAlignment(Align(object::OffloadBinary::getAlignment()));
     appendToCompilerUsed(M, DummyEntry);
+  } else if (Triple.isOSBinFormatMachO()) {
+    // Mach-O needs a dummy variable in the section (like ELF) to ensure the
+    // linker provides the section boundary symbols.
+    auto *DummyEntry = new GlobalVariable(
+        M, ZeroInitilaizer->getType(), true, GlobalVariable::InternalLinkage,
+        ZeroInitilaizer, "__dummy." + SectionName);
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pvelesko wrote:

@jhuber6 added tests

https://github.com/llvm/llvm-project/pull/183991