llvm · qinkunbao · May 15, 2025 · May 15, 2025 · May 15, 2025
@@ -52,9 +52,6 @@ class Heatmap {
       : BucketSize(BucketSize), MinAddress(MinAddress), MaxAddress(MaxAddress),
         TextSections(TextSections) {}
 
-  uint64_t HotStart{0};
-  uint64_t HotEnd{0};
-
   inline bool ignoreAddress(uint64_t Address) const {
     return (Address > MaxAddress) || (Address < MinAddress);
   }

@@ -1316,14 +1316,6 @@ std::error_code DataAggregator::printLBRHeatMap() {
   }
   Heatmap HM(opts::HeatmapBlock, opts::HeatmapMinAddress,
              opts::HeatmapMaxAddress, getTextSections(BC));
-  auto getSymbolValue = [&](const MCSymbol *Symbol) -> uint64_t {
-    if (Symbol)
-      if (ErrorOr<uint64_t> SymValue = BC->getSymbolValue(*Symbol))
-        return SymValue.get();
-    return 0;
-  };
-  HM.HotStart = getSymbolValue(BC->getHotTextStartSymbol());
-  HM.HotEnd = getSymbolValue(BC->getHotTextEndSymbol());
 
   if (!NumTotalSamples) {
     if (opts::BasicAggregation) {

@@ -8,7 +8,6 @@
 
 #include "bolt/Profile/Heatmap.h"
 #include "bolt/Utils/CommandLineOpts.h"
-#include "llvm/ADT/AddressRanges.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/Debug.h"
@@ -314,9 +313,6 @@ void Heatmap::printSectionHotness(raw_ostream &OS) const {
     UnmappedHotness += Frequency;
   };
 
-  AddressRange HotTextRange(HotStart, HotEnd);
-  StringRef HotTextName = "[hot text]";
-
   for (const std::pair<const uint64_t, uint64_t> &KV : Map) {
     NumTotalCounts += KV.second;
     // We map an address bucket to the first section (lowest address)
@@ -332,24 +328,15 @@ void Heatmap::printSectionHotness(raw_ostream &OS) const {
     }
     SectionHotness[TextSections[TextSectionIndex].Name] += KV.second;
     ++BucketUtilization[TextSections[TextSectionIndex].Name];
-    if (HotTextRange.contains(Address)) {
-      SectionHotness[HotTextName] += KV.second;
-      ++BucketUtilization[HotTextName];
-    }
   }
 
-  std::vector<SectionNameAndRange> Sections(TextSections);
-  // Append synthetic hot text section to TextSections
-  if (!HotTextRange.empty())
-    Sections.emplace_back(SectionNameAndRange{HotTextName, HotStart, HotEnd});
-
   assert(NumTotalCounts > 0 &&
          "total number of heatmap buckets should be greater than 0");
 
   OS << "Section Name, Begin Address, End Address, Percentage Hotness, "
      << "Utilization Pct, Partition Score\n";
   const uint64_t MappedCounts = NumTotalCounts - UnmappedHotness;
-  for (const auto [Name, Begin, End] : Sections) {
+  for (const auto [Name, Begin, End] : TextSections) {
     const float Hotness = 1. * SectionHotness[Name] / NumTotalCounts;
     const float MappedHotness =
         MappedCounts ? 1. * SectionHotness[Name] / MappedCounts : 0;

@@ -968,9 +968,8 @@ void RewriteInstance::discoverFileObjects() {
       continue;
     }
 
-    // Ignore input hot markers unless in heatmap mode
-    if ((SymName == "__hot_start" || SymName == "__hot_end") &&
-        !opts::HeatmapMode)
+    // Ignore input hot markers
+    if (SymName == "__hot_start" || SymName == "__hot_end")
       continue;
 
     FileSymRefs.emplace(SymbolAddress, Symbol);

@@ -6,7 +6,7 @@
 # RUN: %clangxx %cxxflags %s %t.so -o %t -Wl,-q -nostdlib
 # RUN: link_fdata %s %t %t.pat PREAGGT1
 # RUN: link_fdata %s %t %t.pat2 PREAGGT2
-# RUN-DISABLED: link_fdata %s %t %t.patplt PREAGGPLT
+# RUN: link_fdata %s %t %t.patplt PREAGGPLT
 
 # RUN: llvm-strip --strip-unneeded %t -o %t.strip
 # RUN: llvm-objcopy --remove-section=.eh_frame %t.strip %t.noeh
@@ -26,8 +26,8 @@
 
 ## Check pre-aggregated traces don't report zero-sized PLT fall-through as
 ## invalid trace
-# RUN-DISABLED: llvm-bolt %t.strip --pa -p %t.patplt -o %t.out | FileCheck %s \
-# RUN-DISABLED:   --check-prefix=CHECK-PLT
+# RUN: llvm-bolt %t.strip --pa -p %t.patplt -o %t.out | FileCheck %s \
+# RUN:   --check-prefix=CHECK-PLT
 # CHECK-PLT: traces mismatching disassembled function contents: 0
 
   .globl foo

@@ -13,7 +13,6 @@ RUN:   --reorder-functions=cdsort --enable-bat --dyno-stats --skip-funcs=main
 RUN: llvm-bolt-heatmap %t.out -o %t2 --pa -p %p/Inputs/blarge_new_bat.preagg.txt \
 RUN:   2>&1 | FileCheck --check-prefix CHECK-HEATMAP-BAT %s
 RUN: FileCheck %s --check-prefix CHECK-SEC-HOT-BAT --input-file %t2-section-hotness.csv
-RUN: llvm-nm -n %t.out | FileCheck %s --check-prefix=CHECK-HOT-SYMS
 
 CHECK-HEATMAP: PERF2BOLT: read 81 aggregated LBR entries
 CHECK-HEATMAP: HEATMAP: invalid traces: 1
@@ -34,6 +33,3 @@ CHECK-SEC-HOT-BAT-NEXT: .bolt.org.text, 0x4010b0, 0x401c25, 38.3385, 51.0638, 0.
 CHECK-SEC-HOT-BAT-NEXT: .fini, 0x401c28, 0x401c35, 0.0000, 0.0000, 0.0000
 CHECK-SEC-HOT-BAT-NEXT: .text, 0x800000, 0x8002cc, 38.7595, 91.6667, 0.3553
 CHECK-SEC-HOT-BAT-NEXT: .text.cold, 0x800300, 0x800415, 0.0000, 0.0000, 0.0000
-CHECK-SEC-HOT-BAT-NEXT: [hot text], 0x800000, 0x8002cc, 38.7595, 91.6667, 0.3553
-CHECK-HOT-SYMS: 800000 W __hot_start
-CHECK-HOT-SYMS: 8002cc W __hot_end
diff --git a/clang/docs/CMakeLists.txt b/clang/docs/CMakeLists.txt
@@ -134,34 +134,6 @@ if (LLVM_ENABLE_SPHINX)
     gen_rst_file_from_td(DiagnosticsReference.rst -gen-diag-docs ../include/clang/Basic/Diagnostic.td "${docs_targets}")
     gen_rst_file_from_td(ClangCommandLineReference.rst -gen-opt-docs ../include/clang/Driver/ClangOptionDocs.td "${docs_targets}")
 
-    # Another generated file from a different source
-    set(docs_tools_dir ${CMAKE_CURRENT_SOURCE_DIR}/tools)
-    set(aopts_rst_rel_path analyzer/user-docs/Options.rst)
-    set(aopts_rst "${CMAKE_CURRENT_BINARY_DIR}/${aopts_rst_rel_path}")
-    set(analyzeroptions_def "${CMAKE_CURRENT_SOURCE_DIR}/../include/clang/StaticAnalyzer/Core/AnalyzerOptions.def")
-    set(aopts_rst_in "${CMAKE_CURRENT_SOURCE_DIR}/${aopts_rst_rel_path}.in")
-    add_custom_command(
-      OUTPUT ${aopts_rst}
-      COMMAND ${Python3_EXECUTABLE} generate_analyzer_options_docs.py
-              --options-def "${analyzeroptions_def}"
-              --template "${aopts_rst_in}"
-              --out "${aopts_rst}"
-      WORKING_DIRECTORY ${docs_tools_dir}
-      VERBATIM
-      COMMENT "Generating ${aopts_rst}"
-      DEPENDS ${docs_tools_dir}/${generate_aopts_docs}
-              ${aopts_rst_in}
-              copy-clang-rst-docs
-      )
-    add_custom_target(generate-analyzer-options-rst DEPENDS ${aopts_rst})
-    foreach(target ${docs_targets})
-      add_dependencies(${target} generate-analyzer-options-rst)
-    endforeach()
-
-    # Technically this is redundant because generate-analyzer-options-rst
-    # depends on the copy operation (because it wants to drop a generated file
-    # into a subdirectory of the copied tree), but I'm leaving it here for the
-    # sake of clarity.
     foreach(target ${docs_targets})
       add_dependencies(${target} copy-clang-rst-docs)
     endforeach()

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
@@ -520,36 +520,19 @@ Improvements to Clang's diagnostics
 - Several compatibility diagnostics that were incorrectly being grouped under
   ``-Wpre-c++20-compat`` are now part of ``-Wc++20-compat``. (#GH138775)
 
-- Improved the ``-Wtautological-overlap-compare`` diagnostics to warn about overlapping and non-overlapping ranges involving character literals and floating-point literals.
+- Improved the ``-Wtautological-overlap-compare`` diagnostics to warn about overlapping and non-overlapping ranges involving character literals and floating-point literals. 
   The warning message for non-overlapping cases has also been improved (#GH13473).
 
 - Fixed a duplicate diagnostic when performing typo correction on function template
   calls with explicit template arguments. (#GH139226)
-
+  
 - Explanatory note is printed when ``assert`` fails during evaluation of a
   constant expression. Prior to this, the error inaccurately implied that assert
   could not be used at all in a constant expression (#GH130458)
 
 - A new off-by-default warning ``-Wms-bitfield-padding`` has been added to alert to cases where bit-field
   packing may differ under the MS struct ABI (#GH117428).
 
-- ``-Watomic-access`` no longer fires on unreachable code. e.g.,
-
-  .. code-block:: c
-
-    _Atomic struct S { int a; } s;
-    void func(void) {
-      if (0)
-        s.a = 12; // Previously diagnosed with -Watomic-access, now silenced
-      s.a = 12; // Still diagnosed with -Watomic-access
-      return;
-      s.a = 12; // Previously diagnosed, now silenced
-    }
-
-
-- A new ``-Wcharacter-conversion`` warns where comparing or implicitly converting
-  between different Unicode character types (``char8_t``, ``char16_t``, ``char32_t``).
-  This warning only triggers in C++ as these types are aliases in C. (#GH138526)
 
 Improvements to Clang's time-trace
 ----------------------------------
@@ -614,7 +597,6 @@ Bug Fixes in This Version
 - Fixed a crash with an invalid member function parameter list with a default
   argument which contains a pragma. (#GH113722)
 - Fixed assertion failures when generating name lookup table in modules. (#GH61065, #GH134739)
-- Fixed an assertion failure in constant compound literal statements. (#GH139160)
 
 Bug Fixes to Compiler Builtins
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -727,8 +709,6 @@ Bug Fixes to C++ Support
 - Fixed the handling of pack indexing types in the constraints of a member function redeclaration. (#GH138255)
 - Clang now correctly parses arbitrary order of ``[[]]``, ``__attribute__`` and ``alignas`` attributes for declarations (#GH133107)
 - Fixed a crash when forming an invalid function type in a dependent context. (#GH138657) (#GH115725) (#GH68852)
-- Clang no longer segfaults when there is a configuration mismatch between modules and their users (http://crbug.com/400353616).
-- Fix an incorrect deduction when calling an explicit object member function template through an overload set address.
 
 Bug Fixes to AST Handling
 ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -877,11 +857,6 @@ clang-format
 - Add ``OneLineFormatOffRegex`` option for turning formatting off for one line.
 - Add ``SpaceAfterOperatorKeyword`` option.
 
-clang-refactor
---------------
-- Reject `0` as column or line number in 1-based command-line source locations.
-  Fixes crash caused by `0` input in `-selection=<file>:<line>:<column>[-<line>:<column>]`. (#GH139457)
-
 libclang
 --------
 - Fixed a bug in ``clang_File_isEqual`` that sometimes led to different
@@ -900,8 +875,6 @@ libclang
 
 Code Completion
 ---------------
-- Reject `0` as column or line number in 1-based command-line source locations.
-  Fixes crash caused by `0` input in `-code-completion-at=<file>:<line>:<column>`. (#GH139457)
 
 Static Analyzer
 ---------------

diff --git a/clang/docs/analyzer/user-docs.rst b/clang/docs/analyzer/user-docs.rst
@@ -8,7 +8,6 @@ Contents:
 
    user-docs/Installation
    user-docs/CommandLineUsage
-   user-docs/Options
    user-docs/UsingWithXCode
    user-docs/FilingBugs
    user-docs/CrossTranslationUnit

diff --git a/clang/docs/analyzer/user-docs/CommandLineUsage.rst b/clang/docs/analyzer/user-docs/CommandLineUsage.rst
@@ -194,8 +194,6 @@ When compiling your application to run on the simulator, it is important that **
 
 If you aren't certain which compiler Xcode uses to build your project, try just running ``xcodebuild`` (without **scan-build**). You should see the full path to the compiler that Xcode is using, and use that as an argument to ``--use-cc``.
 
-.. _command-line-usage-CodeChecker:
-
 CodeChecker
 -----------
 

diff --git a/clang/docs/analyzer/user-docs/Options.rst.in b/clang/docs/analyzer/user-docs/Options.rst.in
-Original file line number
+Diff line change
@@ Expand Up @@
     If you aren't certain which compiler Xcode uses to build your project, try just running ``xcodebuild`` (without **scan-build**). You should see the full path to the compiler that Xcode is using, and use that as an argument to ``--use-cc``.
-    .. _command-line-usage-CodeChecker:
     CodeChecker
     -----------
@@ Expand Down @@