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

[Paulius Velesko via cfe-commits]

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@@ -3390,6 +3429,12 @@ void Darwin::addClangTargetOptions(
 
   MachO::addClangTargetOptions(DriverArgs, CC1Args, DeviceOffloadKind);
 
+  // When compiling device code (e.g. SPIR-V for HIP), skip host-specific
+  // flags like -faligned-alloc-unavailable and -fno-sized-deallocation
+  // that depend on the host OS version and are irrelevant to device code.
+  if (DeviceOffloadKind != Action::OFK_None)
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pvelesko wrote:

just device compilations 

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