Fix ABI mismatch (#2776)

* Fix ABI mismatch

* fix

Author: wsmoses

src/api.jl

@@ -884,7 +884,7 @@ EnzymeGradientUtilsSetReverseBlock(
     block,
 ) = ccall(
     (:EnzymeGradientUtilsSetReverseBlock, libEnzyme),
-    LLVM.API.LLVMBasicBlockRef,
+    Cvoid,
     (
         EnzymeGradientUtilsRef,
         LLVM.API.LLVMBasicBlockRef,

src/gradientutils.jl

@@ -95,7 +95,7 @@ function add_reverse_block!(gutils::GradientUtils, block::LLVM.BasicBlock, name:
 end
 
 function set_reverse_block!(gutils::GradientUtils, block::LLVM.BasicBlock)
-    return LLVM.BasicBlock(API.EnzymeGradientUtilsSetReverseBlock(gutils, block))
+    return API.EnzymeGradientUtilsSetReverseBlock(gutils, block)
 end
 
 function get_or_insert_conditional_execute!(fn::LLVM.Function; force_run=false, need_result=true, preprocess=nothing, postprocess=nothing, postprocess_const=nothing, cmpidx::Int = 1)
@@ -357,4 +357,4 @@ function batch_call_same_with_inverted_arg_if_active!(
     end
 
     return shadow
-end
+end

src/rules/llvmrules.jl

@@ -1570,9 +1570,6 @@ end
         offset = new_from_original(gutils, origops[2])
         offset = lookup_value(gutils, offset, B)
 
-        currentBlock = Base.position(B)
-        ogname = LLVM.name(currentBlock)
-
         fval = if get_runtime_activity(gutils)
             lookup_value(gutils, new_from_original(gutils, origops[1]), B)
         else
@@ -1593,6 +1590,9 @@ end
             if get_runtime_activity(gutils) && endB === nothing
                 cond = icmp!(B, LLVM.API.LLVMIntNE, fval, args[1])
 
+	        currentBlock = Base.position(B)
+        	ogname = LLVM.name(currentBlock)
+
                 nextB = add_reverse_block!(gutils, currentBlock, ogname*"_active")
 
                 endB = add_reverse_block!(gutils, nextB, ogname*"_end", true, false)
@@ -1644,9 +1644,6 @@ end
 
         i8 = LLVM.IntType(8)
 
-        currentBlock = Base.position(B)
-        ogname = LLVM.name(currentBlock)
-
         fval = if get_runtime_activity(gutils)
             lookup_value(gutils, new_from_original(gutils, origops[1]), B)
         else
@@ -1664,6 +1661,9 @@ end
 
             if get_runtime_activity(gutils)
                 cond = icmp!(B, LLVM.API.LLVMIntNE, fval, anti)
+        
+		currentBlock = Base.position(B)
+		ogname = LLVM.name(currentBlock)
 
                 nextB = add_reverse_block!(gutils, currentBlock, ogname*"_active")