; RUN: if [ %llvmver -lt 16 ]; then %opt < %s %loadEnzyme -enzyme -enzyme-preopt=false -S | FileCheck %s; fi
; RUN: %opt < %s %newLoadEnzyme -passes="enzyme" -enzyme-preopt=false -S | FileCheck %s

; Function Attrs: nounwind uwtable
define dso_local void @memcpy_float(double* nocapture %dst, double* nocapture readonly %src, i64 %num) #0 {
entry:
  %0 = bitcast double* %dst to i8*
  %1 = bitcast double* %src to i8*
  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %0, i8* align 1 %1, i64 %num, i1 false)
  ret void
}

; Function Attrs: argmemonly nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #1

; Function Attrs: nounwind uwtable
define dso_local void @dmemcpy_float(double* %dst, double* %dstp, double* %src, double* %srcp, i64 %n) local_unnamed_addr #0 {
entry:
  tail call void (...) @__enzyme_fwddiff.f64(void (double*, double*, i64)* nonnull @memcpy_float, double* %dst, double* %dstp, double* %src, double* %srcp, i64 %n) #3
  ret void
}

declare void @__enzyme_fwddiff.f64(...) local_unnamed_addr


attributes #0 = { nounwind uwtable }
attributes #1 = { argmemonly nounwind }
attributes #2 = { noinline nounwind uwtable }


; CHECK: define internal void @fwddiffememcpy_float(double* nocapture %dst, double* nocapture %"dst'", double* nocapture readonly %src, double* nocapture %"src'", i64 %num)
; CHECK-NEXT: entry:
; CHECK-NEXT:   %[[ipc:.+]] = bitcast double* %"dst'" to i8*
; CHECK-NEXT:   %0 = bitcast double* %dst to i8*
; CHECK-NEXT:   %[[ipc1:.+]] = bitcast double* %"src'" to i8*
; CHECK-NEXT:   %1 = bitcast double* %src to i8*
; CHECK-NEXT:   tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %[[ipc]], i8* align 1 %[[ipc1]], i64 %num, i1 false)
; CHECK-NEXT:   tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %0, i8* align 1 %1, i64 %num, i1 false)
; CHECK-NEXT:   ret void
; CHECK-NEXT: }
