From 1c6031a02a852d3b908c3ff0ea19eddacd6b0004 Mon Sep 17 00:00:00 2001
From: Devajith Valaparambil Sreeramaswamy
 <devajith.valaparambil.sreeramaswamy@cern.ch>
Date: Wed, 7 Feb 2024 16:45:58 +0100
Subject: [PATCH] Explicitly disable `RelLookupTableConvertedPass`

Before the passmanager update, the function `populateModulePassManager`
was called instead of `buildPerModuleDefaultPipeline` to set the default
passes. But the former did not have `RelLookupTableConverterPass` turned on
by default.
---
 lib/Interpreter/BackendPasses.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/Interpreter/BackendPasses.cpp b/lib/Interpreter/BackendPasses.cpp
index 2f8249e132..172e7eb2bf 100644
--- a/lib/Interpreter/BackendPasses.cpp
+++ b/lib/Interpreter/BackendPasses.cpp
@@ -378,6 +378,7 @@ void BackendPasses::CreatePasses(int OptLevel, llvm::ModulePassManager& MPM,
           P.equals("ModuleInlinerPass") || P.equals("InlinerPass") ||
           P.equals("InlineAdvisorAnalysis") ||
           P.equals("PartiallyInlineLibCallsPass") ||
+          P.equals("RelLookupTableConverterPass") ||
           P.equals("InlineCostAnnotationPrinterPass") ||
           P.equals("InlineSizeEstimatorAnalysisPrinterPass") ||
           P.equals("InlineSizeEstimatorAnalysis"))
@@ -385,6 +386,11 @@ void BackendPasses::CreatePasses(int OptLevel, llvm::ModulePassManager& MPM,
 
       return true;
     });
+  } else {
+    // Register a callback for disabling RelLookupTableConverterPass.
+    PIC.registerShouldRunOptionalPassCallback([](StringRef P, Any) {
+      return !P.equals("RelLookupTableConverterPass");
+    });
   }
 
   SI.registerCallbacks(PIC, &FAM);