[llvm] llvm-reduce: Fix taking wrong error before exit (PR #135020)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm created https://github.com/llvm/llvm-project/pull/135020

This was taking the error from the first getBitcodeFileContents,
which had to have succeeded at this point. It was also ignoring
the next 2 errors.

>From 93be8a44e5b5cf644d5ac65b0ae3060d06b48edd Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Wed, 9 Apr 2025 15:20:49 +0800
Subject: [PATCH] llvm-reduce: Fix taking wrong error before exit

This was taking the error from the first getBitcodeFileContents,
which had to have succeeded at this point. It was also ignoring
the next 2 errors.
---
 llvm/tools/llvm-reduce/ReducerWorkItem.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/llvm/tools/llvm-reduce/ReducerWorkItem.cpp b/llvm/tools/llvm-reduce/ReducerWorkItem.cpp
index ad40d8d8baa36..8d2675c685038 100644
--- a/llvm/tools/llvm-reduce/ReducerWorkItem.cpp
+++ b/llvm/tools/llvm-reduce/ReducerWorkItem.cpp
@@ -757,13 +757,20 @@ void ReducerWorkItem::readBitcode(MemoryBufferRef Data, LLVMContext &Ctx,
     WithColor::error(errs(), ToolName) << IF.takeError();
     exit(1);
   }
+
   BitcodeModule BM = IF->Mods[0];
   Expected<BitcodeLTOInfo> LI = BM.getLTOInfo();
+  if (!LI) {
+    WithColor::error(errs(), ToolName) << LI.takeError();
+    exit(1);
+  }
+
   Expected<std::unique_ptr<Module>> MOrErr = BM.parseModule(Ctx);
-  if (!LI || !MOrErr) {
-    WithColor::error(errs(), ToolName) << IF.takeError();
+  if (!MOrErr) {
+    WithColor::error(errs(), ToolName) << MOrErr.takeError();
     exit(1);
   }
+
   LTOInfo = std::make_unique<BitcodeLTOInfo>(*LI);
   M = std::move(MOrErr.get());
 }