[llvm] [PassBuilder] Add a pass to LTO postlink step (PR #124053)

[via llvm-commits]

https://github.com/gulfemsavrun created https://github.com/llvm/llvm-project/pull/124053

None

>From de922a34913a8f4ed957f61ce9bf005718e045e9 Mon Sep 17 00:00:00 2001
From: Gulfem Savrun Yeniceri <gulfem at google.com>
Date: Wed, 22 Jan 2025 18:49:30 -0800
Subject: [PATCH] [PassBuilder] Add a pass to LTO postlink step

---
 llvm/lib/Passes/PassBuilderPipelines.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/Passes/PassBuilderPipelines.cpp b/llvm/lib/Passes/PassBuilderPipelines.cpp
index 4ec0fb8fc81ea4..ea50d25e9ecb52 100644
--- a/llvm/lib/Passes/PassBuilderPipelines.cpp
+++ b/llvm/lib/Passes/PassBuilderPipelines.cpp
@@ -1926,6 +1926,8 @@ PassBuilder::buildLTODefaultPipeline(OptimizationLevel Level,
   // Remove unused arguments from functions.
   MPM.addPass(DeadArgumentEliminationPass());
 
+  MPM.addPass(RelLookupTableConverterPass());
+
   // Reduce the code after globalopt and ipsccp.  Both can open up significant
   // simplification opportunities, and both can propagate functions through
   // function pointers.  When this happens, we often have to resolve varargs