fix to register analysis pass from llvm plugin

Author: van-ema

compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp

@@ -795,6 +795,20 @@ LLVMRustOptimize(
   CGSCCAnalysisManager CGAM;
   ModuleAnalysisManager MAM;
 
+  if (LLVMPluginsLen) {
+    auto PluginsStr = StringRef(LLVMPlugins, LLVMPluginsLen);
+    SmallVector<StringRef> Plugins;
+    PluginsStr.split(Plugins, ',', -1, false);
+    for (auto PluginPath: Plugins) {
+      auto Plugin = PassPlugin::Load(PluginPath.str());
+      if (!Plugin) {
+        LLVMRustSetLastError(("Failed to load pass plugin" + PluginPath.str()).c_str());
+        return LLVMRustResult::Failure;
+      }
+      Plugin->registerPassBuilderCallbacks(PB);
+    }
+  }
+
   FAM.registerPass([&] { return PB.buildDefaultAAPipeline(); });
 
   Triple TargetTriple(TheModule->getTargetTriple());
@@ -918,20 +932,6 @@ LLVMRustOptimize(
     }
   }
 
-  if (LLVMPluginsLen) {
-    auto PluginsStr = StringRef(LLVMPlugins, LLVMPluginsLen);
-    SmallVector<StringRef> Plugins;
-    PluginsStr.split(Plugins, ',', -1, false);
-    for (auto PluginPath: Plugins) {
-      auto Plugin = PassPlugin::Load(PluginPath.str());
-      if (!Plugin) {
-        LLVMRustSetLastError(("Failed to load pass plugin" + PluginPath.str()).c_str());
-        return LLVMRustResult::Failure;
-      }
-      Plugin->registerPassBuilderCallbacks(PB);
-    }
-  }
-
   ModulePassManager MPM;
   bool NeedThinLTOBufferPasses = UseThinLTOBuffers;
   if (!NoPrepopulatePasses) {