From f780d983d138f20ababcddda680f0b0a2d39d55d Mon Sep 17 00:00:00 2001
From: Elliott Slaughter <slaughter@cs.stanford.edu>
Date: Fri, 25 Aug 2023 11:28:21 -0700
Subject: [PATCH] Enable opaque pointers in LLVM 16.

---
 src/tcompiler.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/tcompiler.cpp b/src/tcompiler.cpp
index 592b62dc..03e269d4 100644
--- a/src/tcompiler.cpp
+++ b/src/tcompiler.cpp
@@ -270,7 +270,7 @@ int terra_inittarget(lua_State *L) {
 
     TT->next_unused_id = 0;
     TT->ctx = new LLVMContext();
-#if LLVM_VERSION >= 150
+#if LLVM_VERSION >= 150 && LLVM_VERSION < 160
     // Hack: This is a workaround to avoid the opaque pointer
     // transition, but we will need to deal with it eventually.
     // FIXME: https://github.com/terralang/terra/issues/553
@@ -2348,12 +2348,18 @@ struct FunctionEmitter {
         return result;
     }
     bool isPointerToFunction(Type *t) {
-        return t->isPointerTy() && t->getPointerElementType()->isFunctionTy();
+        return t->isPointerTy()
+#if LLVM_VERSION < 160
+          && t->getPointerElementType()->isFunctionTy()
+#endif
+;
     }
     Value *emitStructSelect(Obj *structType, Value *structPtr, int index,
                             Obj *entryType) {
         assert(structPtr->getType()->isPointerTy());
+#if LLVM_VERSION < 160
         assert(structPtr->getType()->getPointerElementType()->isStructTy());
+#endif
         Ty->EnsureTypeIsComplete(structType);
 
         Obj layout;