Merge branch 'main' into llvm-c-enumerator-arbitrary-size

Author: HertzDevil

bolt/docs/CMakeLists.txt

@@ -48,14 +48,6 @@ if (LLVM_ENABLE_DOXYGEN)
     set(bolt_doxygen_qhp_cust_filter_attrs "")
   endif()
 
-  option(LLVM_DOXYGEN_SVG
-    "Use svg instead of png files for doxygen graphs." OFF)
-  if (LLVM_DOXYGEN_SVG)
-    set(DOT_IMAGE_FORMAT "svg")
-  else()
-    set(DOT_IMAGE_FORMAT "png")
-  endif()
-
   configure_file(${CMAKE_CURRENT_SOURCE_DIR}/doxygen.cfg.in
     ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg @ONLY)
 
@@ -73,7 +65,6 @@ if (LLVM_ENABLE_DOXYGEN)
   set(bolt_doxygen_qhelpgenerator_path)
   set(bolt_doxygen_qhp_cust_filter_name)
   set(bolt_doxygen_qhp_cust_filter_attrs)
-  set(DOT_IMAGE_FORMAT)
 
   add_custom_target(doxygen-bolt
     COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg

bolt/docs/doxygen.cfg.in

@@ -2210,7 +2210,7 @@ DIRECTORY_GRAPH        = YES
 # The default value is: png.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-DOT_IMAGE_FORMAT       = @DOT_IMAGE_FORMAT@
+DOT_IMAGE_FORMAT       = svg
 
 # If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
 # enable generation of interactive SVG images that allow zooming and panning.

clang-tools-extra/docs/CMakeLists.txt

@@ -46,14 +46,6 @@ if (DOXYGEN_FOUND)
       set(clang_tools_doxygen_qhp_cust_filter_attrs "")
     endif()
 
-    option(LLVM_DOXYGEN_SVG
-      "Use svg instead of png files for doxygen graphs." OFF)
-    if (LLVM_DOXYGEN_SVG)
-      set(DOT_IMAGE_FORMAT "svg")
-    else()
-      set(DOT_IMAGE_FORMAT "png")
-    endif()
-
     configure_file(${CMAKE_CURRENT_SOURCE_DIR}/doxygen.cfg.in
       ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg @ONLY)
 
@@ -71,7 +63,6 @@ if (DOXYGEN_FOUND)
     set(clang_tools_doxygen_qhelpgenerator_path)
     set(clang_tools_doxygen_qhp_cust_filter_name)
     set(clang_tools_doxygen_qhp_cust_filter_attrs)
-    set(DOT_IMAGE_FORMAT)
 
     add_custom_target(doxygen-clang-tools
       COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg

clang-tools-extra/docs/doxygen.cfg.in

@@ -2205,7 +2205,7 @@ DIRECTORY_GRAPH        = YES
 # The default value is: png.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-DOT_IMAGE_FORMAT       = @DOT_IMAGE_FORMAT@
+DOT_IMAGE_FORMAT       = svg
 
 # If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
 # enable generation of interactive SVG images that allow zooming and panning.

clang/docs/CMakeLists.txt

@@ -47,14 +47,6 @@ if (LLVM_ENABLE_DOXYGEN)
     set(clang_doxygen_qhp_cust_filter_attrs "")
   endif()
 
-  option(LLVM_DOXYGEN_SVG
-    "Use svg instead of png files for doxygen graphs." OFF)
-  if (LLVM_DOXYGEN_SVG)
-    set(DOT_IMAGE_FORMAT "svg")
-  else()
-    set(DOT_IMAGE_FORMAT "png")
-  endif()
-
   configure_file(${CMAKE_CURRENT_SOURCE_DIR}/doxygen.cfg.in
     ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg @ONLY)
 
@@ -72,7 +64,6 @@ if (LLVM_ENABLE_DOXYGEN)
   set(clang_doxygen_qhelpgenerator_path)
   set(clang_doxygen_qhp_cust_filter_name)
   set(clang_doxygen_qhp_cust_filter_attrs)
-  set(DOT_IMAGE_FORMAT)
 
   add_custom_target(doxygen-clang
     COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg

clang/docs/CommandGuide/clang.rst

@@ -443,11 +443,8 @@ Code Generation Options
     :option:`-Oz` Like :option:`-Os` (and thus :option:`-O2`), but reduces code
     size further.
 
-    :option:`-Og` Similar to :option:`-O1`, but with slightly reduced
-    optimization and better variable visibility. The same optimizations are run
-    as at :option:`-O1`, but the ``-fextend-variable-liveness`` flag is
-    also set, which tries to prevent optimizations from reducing the liveness of
-    user variables, improving their availability when debugging.
+    :option:`-Og` Like :option:`-O1`. In future versions, this option might
+    disable different optimizations in order to improve debuggability.
 
     :option:`-O` Equivalent to :option:`-O1`.
 

clang/docs/ReleaseNotes.rst

@@ -140,6 +140,13 @@ C Language Changes
 - Clang now allows an ``inline`` specifier on a typedef declaration of a
   function type in Microsoft compatibility mode. #GH124869
 - Clang now allows ``restrict`` qualifier for array types with pointer elements (#GH92847).
+- Clang now diagnoses ``const``-qualified object definitions without an
+  initializer. If the object is zero-initialized, it will be diagnosed under
+  the new warning ``-Wdefault-const-init`` (which is grouped under
+  ``-Wc++-compat`` because this construct is not compatible with C++). If the
+  object is left uninitialized, it will be diagnosed unsed the new warning
+  ``-Wdefault-const-init-unsafe`` (which is grouped under
+  ``-Wdefault-const-init``). #GH19297
 - Added ``-Wimplicit-void-ptr-cast``, grouped under ``-Wc++-compat``, which
   diagnoses implicit conversion from ``void *`` to another pointer type as
   being incompatible with C++. (#GH17792)
@@ -230,10 +237,6 @@ Modified Compiler Flags
 
 - The ``-mexecute-only`` and ``-mpure-code`` flags are now accepted for AArch64 targets. (#GH125688)
 
-- The ``-Og`` optimization flag now sets ``-fextend-variable-liveness``,
-  reducing performance slightly while reducing the number of optimized-out
-  variables.
-
 Removed Compiler Flags
 -------------------------
 

clang/docs/doxygen.cfg.in

@@ -2193,7 +2193,7 @@ DIRECTORY_GRAPH        = YES
 # The default value is: png.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-DOT_IMAGE_FORMAT       = @DOT_IMAGE_FORMAT@
+DOT_IMAGE_FORMAT       = svg
 
 # If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
 # enable generation of interactive SVG images that allow zooming and panning.

clang/include/clang/Basic/DiagnosticGroups.td

@@ -154,9 +154,11 @@ def BuiltinRequiresHeader : DiagGroup<"builtin-requires-header">;
 def C99Compat : DiagGroup<"c99-compat">;
 def C23Compat : DiagGroup<"c23-compat">;
 def : DiagGroup<"c2x-compat", [C23Compat]>;
-
+def DefaultConstInitUnsafe : DiagGroup<"default-const-init-unsafe">;
+def DefaultConstInit : DiagGroup<"default-const-init", [DefaultConstInitUnsafe]>;
 def ImplicitVoidPtrCast : DiagGroup<"implicit-void-ptr-cast">;
-def CXXCompat: DiagGroup<"c++-compat", [ImplicitVoidPtrCast]>;
+def CXXCompat: DiagGroup<"c++-compat", [ImplicitVoidPtrCast, DefaultConstInit]>;
+
 def ExternCCompat : DiagGroup<"extern-c-compat">;
 def KeywordCompat : DiagGroup<"keyword-compat">;
 def GNUCaseRange : DiagGroup<"gnu-case-range">;

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -8197,6 +8197,16 @@ def err_address_space_qualified_new : Error<
 def err_address_space_qualified_delete : Error<
   "'delete' cannot delete objects of type %0 in address space '%1'">;
 
+def note_default_init_const_member : Note<
+  "member %0 declared 'const' here">;
+def warn_default_init_const : Warning<
+  "default initialization of an object of type %0%select{| with const member}1 "
+  "is incompatible with C++">,
+  InGroup<DefaultConstInit>, DefaultIgnore;
+def warn_default_init_const_unsafe : Warning<
+  "default initialization of an object of type %0%select{| with const member}1 "
+  "leaves the object uninitialized and is incompatible with C++">,
+  InGroup<DefaultConstInitUnsafe>;
 def err_default_init_const : Error<
   "default initialization of an object of const type %0"
   "%select{| without a user-provided default constructor}1">;