[Serialization] Remove an unnecessary cast (NFC)

[kazutakahirata]

IndexFromEnd is already of int.

[llvmbot]

@llvm/pr-subscribers-clang

@llvm/pr-subscribers-clang-modules

Author: Kazu Hirata (kazutakahirata)

Changes

IndexFromEnd is already of int.

---

Full diff: https://github.com/llvm/llvm-project/pull/147204.diff

1 Files Affected:

• (modified) clang/lib/Serialization/ASTReader.cpp (+1-1)

diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index 6e03de87e587d..cc2d2ea86ccb7 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -9682,7 +9682,7 @@ ModuleFile *ASTReader::getLocalModuleFile(ModuleFile &M, unsigned ID) const {
     // It's a prefix (preamble, PCH, ...). Look it up by index.
    int IndexFromEnd = static_cast<int>(ID >> 1);
     assert(IndexFromEnd && "got reference to unknown module file");
-    return getModuleManager().pch_modules().end()[-static_cast<int>(IndexFromEnd)];
+    return getModuleManager().pch_modules().end()[-IndexFromEnd];
   }
 }