Add demote_float16 pass

Author: vchuravy

lib/libLLVM_extra.jl

@@ -168,6 +168,12 @@ function LLVMAddRemoveJuliaAddrspacesPass(PM)
 end
 end
 
+if VERSION >= v"1.6.0-DEV.1215"
+function LLVMAddDemoteFloat16Pass(PM)
+    ccall(:LLVMExtraAddDemoteFloat16Pass,Cvoid,(LLVMPassManagerRef,), PM)
+end
+end
+
 if VERSION >= v"1.6.0-DEV.1476"
 function LLVMAddRemoveNIPass(PM)
     ccall(:LLVMExtraAddRemoveNIPass,Cvoid,(LLVMPassManagerRef,), PM)

src/interop/passes.jl

@@ -1,7 +1,7 @@
 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!, final_lower_gc!, remove_julia_addrspaces!,
-       remove_ni!, julia_licm!
+       demote_float16!, remove_ni!, julia_licm!
 
 alloc_opt!(pm::PassManager) =
     API.LLVMAddAllocOptPass(pm)
@@ -46,6 +46,12 @@ else
     remove_julia_addrspaces!(pm::PassManager) = nothing
 end
 
+if VERSION >= v"1.6.0-DEV.1215"
+    demote_float16!(pm::PassManager) = API.LLVMAddDemoteFloat16Pass(pm)
+else
+    demote_float16!(pm::PassManager) = nothing
+end
+
 if VERSION >= v"1.6.0-DEV.1476"
     remove_ni!(pm::PassManager) = API.LLVMAddRemoveNIPass(pm)
 else

test/interop.jl

@@ -116,6 +116,7 @@ Context() do ctx
 LLVM.Module("SomeModule", ctx) do mod
 ModulePassManager() do pm
 
+demote_float16!(pm)
 julia_licm!(pm)
 alloc_opt!(pm)
 barrier_noop!(pm)