Cleanup preprocessed func (rust-lang#629)

* Cleanup preprocessed function

* fix tests

* fix julia bug

* Fix test

Co-authored-by: William S. Moses <[email protected]>

Author: tgymnich

enzyme/Enzyme/Enzyme.cpp

@@ -1954,6 +1954,9 @@ class Enzyme : public ModulePass {
       I->eraseFromParent();
       changed = true;
     }
+
+    for (const auto &pair : Logic.PPC.cache)
+      pair.second->eraseFromParent();
     Logic.clear();
 
     if (changed && Logic.PostOpt) {

enzyme/test/Enzyme/ReverseMode/allocnotape.ll

@@ -95,7 +95,7 @@ attributes #4 = { nounwind }
 ; CHECK-NEXT:   %1 = trunc i64 %iv to i32
 ; CHECK-NEXT:   %mul = mul nsw i32 %1, %1
 ; CHECK-NEXT:   %arrayidx = getelementptr inbounds [20 x i32], [20 x i32]* %0, i64 0, i64 %iv
-; CHECK-NEXT:   store i32 %mul, i32* %arrayidx, align 4, !tbaa !2
+; CHECK-NEXT:   store i32 %mul, i32* %arrayidx, align 4, !tbaa ![[itbaa:[0-9]+]]
 ; CHECK-NEXT:   %exitcond30 = icmp eq i64 %iv.next, 20
 ; CHECK-NEXT:   br i1 %exitcond30, label %for.body5, label %for.body
 
@@ -120,7 +120,7 @@ attributes #4 = { nounwind }
 ; CHECK: invertfor.body5:                                  ; preds = %for.body5, %incinvertfor.body5
 ; CHECK-NEXT:   %"iv1'ac.0" = phi i64 [ %7, %incinvertfor.body5 ], [ 19, %for.body5 ]
 ; CHECK-NEXT:   %arrayidx9_unwrap = getelementptr inbounds [20 x i32], [20 x i32]* %0, i64 0, i64 %"iv1'ac.0"
-; CHECK-NEXT:   %_unwrap = load i32, i32* %arrayidx9_unwrap, align 4, !tbaa !2, !invariant.group !9
+; CHECK-NEXT:   %_unwrap = load i32, i32* %arrayidx9_unwrap, align 4, !tbaa ![[itbaa]], !invariant.group !
 ; CHECK-NEXT:   %conv_unwrap = sitofp i32 %_unwrap to double
 ; CHECK-NEXT:   %m0diffe = fmul fast double %conv_unwrap, %differeturn
 ; CHECK-NEXT:   %"arrayidx7'ipg_unwrap" = getelementptr inbounds double, double* %"x'", i64 %"iv1'ac.0"