From 744ede0c8525271cb7e977f91ff601e794f9c3ec Mon Sep 17 00:00:00 2001
From: Matin Raayai <30674652+matinraayai@users.noreply.github.com>
Date: Tue, 27 Feb 2024 00:56:50 -0500
Subject: [PATCH] Fixed incorrect usage of llvm::Function::splice. (#1751)

* Fixed incorrect usage of llvm::Function::splice.

* Put an #ifdef to take into account the LLVM version when using llvm::Function::splice.

* fix format

---------

Co-authored-by: William S. Moses <gh@wsmoses.com>
---
 enzyme/Enzyme/Enzyme.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/enzyme/Enzyme/Enzyme.cpp b/enzyme/Enzyme/Enzyme.cpp
index 055b6f394842..47e9f2bba91f 100644
--- a/enzyme/Enzyme/Enzyme.cpp
+++ b/enzyme/Enzyme/Enzyme.cpp
@@ -2110,8 +2110,12 @@ class EnzymeBase {
 
       // Move the truncated body into the original function
       F.deleteBody();
+#if LLVM_VERSION_MAJOR >= 16
+      F.splice(F.begin(), TruncatedFunc);
+#else
       F.getBasicBlockList().splice(F.begin(),
                                    TruncatedFunc->getBasicBlockList());
+#endif
       RemapFunction(F, Mapping,
                     RF_NoModuleLevelChanges | RF_IgnoreMissingLocals);
       TruncatedFunc->deleteBody();