From 190565c26d763be240cb3c4692559eebfffc9817 Mon Sep 17 00:00:00 2001
From: Keno Fischer <keno@juliacomputing.com>
Date: Thu, 14 Apr 2022 00:53:14 -0400
Subject: [PATCH] Some minimal LLVM15 compat (#44870)

just a drive-by as I was trying out some commits on master
---
 src/cgutils.cpp                |  4 ++--
 src/disasm.cpp                 | 13 ++++++++++++-
 src/llvm-remove-addrspaces.cpp |  4 ++--
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/src/cgutils.cpp b/src/cgutils.cpp
index 3dff14b7be63..f5f378de772c 100644
--- a/src/cgutils.cpp
+++ b/src/cgutils.cpp
@@ -2041,10 +2041,10 @@ static void emit_memcpy_llvm(jl_codectx_t &ctx, Value *dst, MDNode *tbaa_dst, Va
         const DataLayout &DL = jl_Module->getDataLayout();
         auto srcty = cast<PointerType>(src->getType());
         //TODO unsafe nonopaque pointer
-        auto srcel = srcty->getElementType();
+        auto srcel = srcty->getPointerElementType();
         auto dstty = cast<PointerType>(dst->getType());
         //TODO unsafe nonopaque pointer
-        auto dstel = dstty->getElementType();
+        auto dstel = dstty->getPointerElementType();
         if (srcel->isArrayTy() && srcel->getArrayNumElements() == 1) {
             src = ctx.builder.CreateConstInBoundsGEP2_32(srcel, src, 0, 0);
             srcel = srcel->getArrayElementType();
diff --git a/src/disasm.cpp b/src/disasm.cpp
index 22926043b9fa..ebbcd03d0fc3 100644
--- a/src/disasm.cpp
+++ b/src/disasm.cpp
@@ -108,6 +108,8 @@
 #include <llvm/Support/CodeGen.h>
 #include <llvm/IR/LegacyPassManager.h>
 
+#include <llvm-c/Disassembler.h>
+
 #include "julia.h"
 #include "julia_internal.h"
 #include "jitlayers.h"
@@ -899,7 +901,11 @@ static void jl_dump_asm_internal(
     std::unique_ptr<MCCodeEmitter> CE;
     std::unique_ptr<MCAsmBackend> MAB;
     if (ShowEncoding) {
+#if JL_LLVM_VERSION >= 150000
+        CE.reset(TheTarget->createMCCodeEmitter(*MCII, Ctx));
+#else
         CE.reset(TheTarget->createMCCodeEmitter(*MCII, *MRI, Ctx));
+#endif
         MAB.reset(TheTarget->createMCAsmBackend(*STI, *MRI, Options));
     }
 
@@ -1231,8 +1237,13 @@ jl_value_t *jl_dump_function_asm_impl(void *F, char raw_mc, const char* asm_vari
              std::unique_ptr<MCAsmBackend> MAB(TM->getTarget().createMCAsmBackend(
                 STI, MRI, TM->Options.MCOptions));
             std::unique_ptr<MCCodeEmitter> MCE;
-            if (binary) // enable MCAsmStreamer::AddEncodingComment printing
+            if (binary) { // enable MCAsmStreamer::AddEncodingComment printing
+#if JL_LLVM_VERSION >= 150000
+                MCE.reset(TM->getTarget().createMCCodeEmitter(MII, *Context));
+#else
                 MCE.reset(TM->getTarget().createMCCodeEmitter(MII, MRI, *Context));
+#endif
+            }
             auto FOut = std::make_unique<formatted_raw_ostream>(asmfile);
             std::unique_ptr<MCStreamer> S(TM->getTarget().createAsmStreamer(
                 *Context, std::move(FOut), true,
diff --git a/src/llvm-remove-addrspaces.cpp b/src/llvm-remove-addrspaces.cpp
index 5cd9a20b8cfd..a3f3cbb1fee7 100644
--- a/src/llvm-remove-addrspaces.cpp
+++ b/src/llvm-remove-addrspaces.cpp
@@ -51,7 +51,7 @@ class AddrspaceRemoveTypeRemapper : public ValueMapTypeRemapper {
             else {
                 //Remove once opaque pointer transition is complete
                 DstTy = PointerType::get(
-                        remapType(Ty->getElementType()),
+                        remapType(Ty->getPointerElementType()),
                         ASRemapper(Ty->getAddressSpace()));
             }
         }
@@ -161,7 +161,7 @@ class AddrspaceRemoveValueMaterializer : public ValueMaterializer {
                     auto ptrty = cast<PointerType>(Src->getType()->getScalarType());
                     //Remove once opaque pointer transition is complete
                     if (!ptrty->isOpaque()) {
-                        Type *SrcTy = remapType(ptrty->getElementType());
+                        Type *SrcTy = remapType(ptrty->getPointerElementType());
                         DstV = CE->getWithOperands(Ops, Ty, false, SrcTy);
                     }
                 }