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These are identified by misc-include-cleaner. I've filtered out those
that break builds. Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.

These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.
@llvmbot llvmbot added clang Clang issues not falling into any other category clang:frontend Language frontend issues, e.g. anything involving "Sema" clang:modules C++20 modules and Clang Header Modules labels May 26, 2025
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llvmbot commented May 26, 2025

@llvm/pr-subscribers-clang-modules

@llvm/pr-subscribers-clang

Author: Kazu Hirata (kazutakahirata)

Changes

These are identified by misc-include-cleaner. I've filtered out those
that break builds. Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.


Full diff: https://github.com/llvm/llvm-project/pull/141523.diff

3 Files Affected:

  • (modified) clang/lib/Lex/HeaderMap.cpp (-1)
  • (modified) clang/lib/Lex/ModuleMap.cpp (-2)
  • (modified) clang/lib/Lex/ModuleMapFile.cpp (-2)
diff --git a/clang/lib/Lex/HeaderMap.cpp b/clang/lib/Lex/HeaderMap.cpp
index 588b32ee9ca8e..a7b670f00ac6e 100644
--- a/clang/lib/Lex/HeaderMap.cpp
+++ b/clang/lib/Lex/HeaderMap.cpp
@@ -18,7 +18,6 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/SystemZ/zOSSupport.h"
 #include <cstring>
 #include <memory>
 #include <optional>
diff --git a/clang/lib/Lex/ModuleMap.cpp b/clang/lib/Lex/ModuleMap.cpp
index e899e0cbc6f35..c088e4eecb3fb 100644
--- a/clang/lib/Lex/ModuleMap.cpp
+++ b/clang/lib/Lex/ModuleMap.cpp
@@ -37,9 +37,7 @@
 #include "llvm/Support/Path.h"
 #include "llvm/Support/VirtualFileSystem.h"
 #include "llvm/Support/raw_ostream.h"
-#include <algorithm>
 #include <cassert>
-#include <cstdint>
 #include <cstring>
 #include <optional>
 #include <string>
diff --git a/clang/lib/Lex/ModuleMapFile.cpp b/clang/lib/Lex/ModuleMapFile.cpp
index f457de85243cc..183e919d14c22 100644
--- a/clang/lib/Lex/ModuleMapFile.cpp
+++ b/clang/lib/Lex/ModuleMapFile.cpp
@@ -20,8 +20,6 @@
 #include "clang/Lex/Lexer.h"
 #include "clang/Lex/ModuleMap.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/Format.h"
 #include <optional>
 
 using namespace clang;

@kazutakahirata kazutakahirata merged commit 36d5767 into llvm:main May 26, 2025
15 checks passed
@kazutakahirata kazutakahirata deleted the cleanup_20250526_unused_headers_clang_Lex branch May 26, 2025 21:57
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3 participants