Disable ORCv2 checks on LLVM 12 + asserts.

Author: maleadt

src/version.jl

@@ -18,3 +18,9 @@ function runtime_version()
         VersionNumber(m[:version])
     end
 end
+
+function is_asserts()
+    Libdl.dlopen(libllvm) do handle
+        Libdl.dlsym(handle, "_ZN4llvm23EnableABIBreakingChecksE"; throw_error=false) !== nothing
+    end
+end

test/runtests.jl

@@ -68,7 +68,7 @@ include("utils.jl")
 if LLVM.has_orc_v1()
     include("orc.jl")
 end
-if LLVM.has_orc_v2()
+if LLVM.has_orc_v2() && !(LLVM.version() < v"13" && LLVM.is_asserts())
     include("orcv2.jl")
 end