add final_lower_gc! wrapper

Author: vchuravy

lib/libLLVM_extra.jl

@@ -150,6 +150,14 @@ end
 
 end
 
+if VERSION >= v"1.3.0-DEV.95"
+
+function LLVMAddFinalLowerGCPass(PM::LLVMPassManagerRef)
+    @apicall(:LLVMExtraAddFinalLowerGCPass,Cvoid,(LLVMPassManagerRef,), PM)
+end
+
+end # v"1.3.0-DEV.95"
+
 function LLVMGetValueContext(V::LLVMValueRef)
     @apicall(:LLVMExtraGetValueContext,LLVMContextRef,(LLVMValueRef,),V)
 end

src/interop/passes.jl

@@ -1,6 +1,6 @@
 export alloc_opt!, barrier_noop!, gc_invariant_verifier!, lower_exc_handlers!,
        combine_mul_add!, multi_versioning!, propagate_julia_addrsp!, lower_ptls!,
-       lower_simdloop!, late_lower_gc_frame!
+       lower_simdloop!, late_lower_gc_frame!, final_lower_gc!
 
 alloc_opt!(pm::PassManager) =
     API.LLVMAddAllocOptPass(ref(pm))
@@ -31,3 +31,10 @@ lower_simdloop!(pm::PassManager) =
 
 late_lower_gc_frame!(pm::PassManager) =
     API.LLVMAddLateLowerGCFramePass(ref(pm))
+
+if VERSION >= v"1.3.0-DEV.95"
+    final_lower_gc!(pm::PassManager) =
+        API.LLVMAddFinalLowerGCPass(ref(pm))
+else
+    final_lower_gc!(pm::PassManager) = nothing
+end

test/interop.jl

@@ -111,6 +111,7 @@ lower_ptls!(pm)
 lower_ptls!(pm, true)
 lower_simdloop!(pm)
 late_lower_gc_frame!(pm)
+final_lower_gc!(pm)
 
 end
 end