Correctly adapt to ABI changes to EnzymeCore (#476)

Co-authored-by: Valentin Churavy <v.churavy@gmail.com>

Author: wsmoses

Project.toml

@@ -20,7 +20,7 @@ UnsafeAtomicsLLVM = "d80eeb9a-aca5-4d75-85e5-170c8b632249"
 [compat]
 Adapt = "0.4, 1.0, 2.0, 3.0, 4"
 Atomix = "0.1"
-EnzymeCore = "0.6.4, 0.7"
+EnzymeCore = "0.7"
 InteractiveUtils = "1.6"
 LinearAlgebra = "1.6"
 MacroTools = "0.5"

ext/EnzymeExt.jl

@@ -11,18 +11,20 @@ module EnzymeExt
     EnzymeRules.inactive(::Type{StaticSize}, x...) = nothing
 
     function fwd(ctx, f, args...)
-        EnzymeCore.autodiff_deferred(Forward, Const(f), Const, Const(ctx), args...)
+        EnzymeCore.autodiff_deferred(Forward, Const(f), Const{Nothing}, Const(ctx), args...)
         return nothing
     end
 
     function aug_fwd(ctx, f::FT, ::Val{ModifiedBetween}, subtape, args...) where {ModifiedBetween, FT}
-        forward, reverse = EnzymeCore.autodiff_deferred_thunk(ReverseSplitModified(ReverseSplitWithPrimal, Val(ModifiedBetween)), Const{Core.Typeof(f)}, Const, Const{Core.Typeof(ctx)}, map(Core.Typeof, args)...)
+        TapeType = EnzymeCore.tape_type(ReverseSplitModified(ReverseSplitWithPrimal, Val(ModifiedBetween)), Const{Core.Typeof(f)}, Const{Nothing}, Const{Core.Typeof(ctx)}, map(Core.Typeof, args)...)
+        forward, reverse = EnzymeCore.autodiff_deferred_thunk(ReverseSplitModified(ReverseSplitWithPrimal, Val(ModifiedBetween)), TapeType, Const{Core.Typeof(f)}, Const{Nothing}, Const{Core.Typeof(ctx)}, map(Core.Typeof, args)...)
         subtape[__groupindex(ctx)] = forward(Const(f), Const(ctx), args...)[1]
         return nothing
     end
 
     function rev(ctx, f::FT, ::Val{ModifiedBetween}, subtape, args...) where {ModifiedBetween, FT}
-        forward, reverse = EnzymeCore.autodiff_deferred_thunk(ReverseSplitModified(ReverseSplitWithPrimal, Val(ModifiedBetween)), Const{Core.Typeof(f)}, Const, Const{Core.Typeof(ctx)}, map(Core.Typeof, args)...)
+        TapeType = EnzymeCore.tape_type(ReverseSplitModified(ReverseSplitWithPrimal, Val(ModifiedBetween)), Const{Core.Typeof(f)}, Const{Nothing}, Const{Core.Typeof(ctx)}, map(Core.Typeof, args)...)
+        forward, reverse = EnzymeCore.autodiff_deferred_thunk(ReverseSplitModified(ReverseSplitWithPrimal, Val(ModifiedBetween)), TapeType, Const{Core.Typeof(f)}, Const{Nothing}, Const{Core.Typeof(ctx)}, map(Core.Typeof, args)...)
         tp = subtape[__groupindex(ctx)]
         reverse(Const(f), Const(ctx), args..., tp)
         return nothing
@@ -92,7 +94,7 @@ module EnzymeExt
         end
 
         # TODO in KA backends like CUDAKernels, etc have a version with a parent job type
-        TapeType = EnzymeCore.tape_type(ReverseSplitModified(ReverseSplitWithPrimal, ModifiedBetween), FT, Const,  Const{ctxTy}, map(Core.Typeof, args2)...)
+        TapeType = EnzymeCore.tape_type(ReverseSplitModified(ReverseSplitWithPrimal, ModifiedBetween), FT, Const{Nothing},  Const{ctxTy}, map(Core.Typeof, args2)...)
 
 
         subtape = Array{TapeType}(undef, size(blocks(iterspace)))