[clang] [llvm] [AMDGPU] Add OpenCL-specific fence address space masks (PR #78572)

[Sameer Sahasrabuddhe via cfe-commits]

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@@ -18365,6 +18366,30 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
   return nullptr;
 }
 
+void CodeGenFunction::AddAMDGCNAddressSpaceMMRA(llvm::Instruction *Inst,
+                                                const CallExpr *E,
+                                                unsigned FirstASNameIdx) {
+  constexpr const char *Tag = "opencl-fence-mem";
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ssahasra wrote:

Defintely drop the "opencl" prefix.

https://github.com/llvm/llvm-project/pull/78572