1 files changed, 19 insertions, 2 deletions
diff --git a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
index 18d37d95a83..2865ea89273 100644
--- a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
@@ -205,7 +205,12 @@ enum class LLVMRustCodeModel {
   None,
 };
 
-static Optional<CodeModel::Model> fromRust(LLVMRustCodeModel Model) {
+#if LLVM_VERSION_LT(16, 0)
+static Optional<CodeModel::Model>
+#else
+static std::optional<CodeModel::Model>
+#endif
+fromRust(LLVMRustCodeModel Model) {
   switch (Model) {
   case LLVMRustCodeModel::Tiny:
     return CodeModel::Tiny;
@@ -218,7 +223,11 @@ static Optional<CodeModel::Model> fromRust(LLVMRustCodeModel Model) {
   case LLVMRustCodeModel::Large:
     return CodeModel::Large;
   case LLVMRustCodeModel::None:
+#if LLVM_VERSION_LT(16, 0)
     return None;
+#else
+    return std::nullopt;
+#endif
   default:
     report_fatal_error("Bad CodeModel.");
   }
@@ -627,14 +636,22 @@ LLVMRustOptimize(
   bool DebugPassManager = false;
 
   PassInstrumentationCallbacks PIC;
+#if LLVM_VERSION_LT(16, 0)
   StandardInstrumentations SI(DebugPassManager);
+#else
+  StandardInstrumentations SI(TheModule->getContext(), DebugPassManager);
+#endif
   SI.registerCallbacks(PIC);
 
   if (LlvmSelfProfiler){
     LLVMSelfProfileInitializeCallbacks(PIC,LlvmSelfProfiler,BeforePassCallback,AfterPassCallback);
   }
 
+#if LLVM_VERSION_LT(16, 0)
   Optional<PGOOptions> PGOOpt;
+#else
+  std::optional<PGOOptions> PGOOpt;
+#endif
   if (PGOGenPath) {
     assert(!PGOUsePath && !PGOSampleUsePath);
     PGOOpt = PGOOptions(PGOGenPath, "", "", PGOOptions::IRInstr,
@@ -800,7 +817,7 @@ LLVMRustOptimize(
       auto Plugin = PassPlugin::Load(PluginPath.str());
       if (!Plugin) {
         LLVMRustSetLastError(("Failed to load pass plugin" + PluginPath.str()).c_str());
-        continue;
+        return LLVMRustResult::Failure;
       }
       Plugin->registerPassBuilderCallbacks(PB);
     }