Toolset update: VS 2022 17.12 Preview 2, Clang 18.1.8

.clang-format

@@ -1,7 +1,18 @@
 # Copyright (c) Microsoft Corporation.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-# https://releases.llvm.org/17.0.1/tools/clang/docs/ClangFormatStyleOptions.html
+# https://releases.llvm.org/18.1.8/tools/clang/docs/ClangFormatStyleOptions.html
+
+# To update this .clang-format file for a new clang-format version:
+# 1. Update the documentation link above.
+# 2. Copy the output of `clang-format -dump-config` into a temporary file.
+#    a. Comment out all of its lines.
+#    b. Uncomment `BasedOnStyle:  LLVM`.
+# 3. Compare that temporary file to this .clang-format file.
+# 4. Adjust this .clang-format file to record new and updated options.
+#    a. Read the new documentation to understand such changes.
+# 5. The goal is for the comparison from the temporary file to this .clang-format file to be pure additions (green).
+#    a. That is, comments here are recording the defaults, while added lines are our customized settings.
 
 ---
 # Language:        Cpp
@@ -11,31 +22,34 @@ AccessModifierOffset: -4
 # AlignAfterOpenBracket: Align
 AlignAfterOpenBracket: DontAlign
 # AlignArrayOfStructures: None
-# TRANSITION, LLVM-51935 (try using AlignArrayOfStructures after this crash is fixed)
 # AlignConsecutiveAssignments:
 #   Enabled:         false
 #   AcrossEmptyLines: false
 #   AcrossComments:  false
 #   AlignCompound:   false
+#   AlignFunctionPointers: false
 #   PadOperators:    true
 AlignConsecutiveAssignments: Consecutive
 # AlignConsecutiveBitFields:
 #   Enabled:         false
 #   AcrossEmptyLines: false
 #   AcrossComments:  false
 #   AlignCompound:   false
+#   AlignFunctionPointers: false
 #   PadOperators:    false
 # AlignConsecutiveDeclarations:
 #   Enabled:         false
 #   AcrossEmptyLines: false
 #   AcrossComments:  false
 #   AlignCompound:   false
+#   AlignFunctionPointers: false
 #   PadOperators:    false
 # AlignConsecutiveMacros:
 #   Enabled:         false
 #   AcrossEmptyLines: false
 #   AcrossComments:  false
 #   AlignCompound:   false
+#   AlignFunctionPointers: false
 #   PadOperators:    false
 AlignConsecutiveMacros: Consecutive
 # AlignConsecutiveShortCaseStatements:
@@ -54,8 +68,11 @@ AlignTrailingComments:
   Kind:            Never
 # AllowAllArgumentsOnNextLine: true
 # AllowAllParametersOfDeclarationOnNextLine: true
+# AllowBreakBeforeNoexceptSpecifier: Never
+AllowBreakBeforeNoexceptSpecifier: OnlyWithParen
 # AllowShortBlocksOnASingleLine: Never
 # AllowShortCaseLabelsOnASingleLine: false
+# AllowShortCompoundRequirementOnASingleLine: true
 # AllowShortEnumsOnASingleLine: true
 # AllowShortFunctionsOnASingleLine: All
 AllowShortFunctionsOnASingleLine: Empty
@@ -91,7 +108,9 @@ AlwaysBreakTemplateDeclarations: Yes
 #   SplitEmptyFunction: true
 #   SplitEmptyRecord: true
 #   SplitEmptyNamespace: true
-# BreakAfterAttributes: Never
+# BreakAdjacentStringLiterals: true
+# BreakAfterAttributes: Leave
+BreakAfterAttributes: Never
 # BreakAfterJavaFieldAnnotations: false
 # BreakArrays:     true
 # BreakBeforeBinaryOperators: None
@@ -138,20 +157,23 @@ IncludeBlocks:   Regroup
 #     SortPriority:    0
 #     CaseSensitive:   false
 IncludeCategories:
-  - Regex:           '^<yvals(_core)?\.h>$'
-    Priority:        1
-  - Regex:           '^<(Windows|userenv)\.h>$'
-    Priority:        3
-    SortPriority:    3
-  - Regex:           '^<WinIoCtl\.h>$'
-    Priority:        3
-    SortPriority:    4
-  - Regex:           '^<__.*\.hpp>$'
-    Priority:        2
+  - Regex:           '^<(yvals|yvals_core)\.h>$'
+    Priority:        10
+  - Regex:           '^<__msvc_.*\.hpp>$'
+    Priority:        20
+  - Regex:           '^<initguid\.h>$' # <initguid.h> should be included before any header that includes <guiddef.h>
+    Priority:        30
+    SortPriority:    30
+  - Regex:           '^<(DbgEng|DbgHelp|Shlwapi|Windows)\.h>$'
+    Priority:        30
+    SortPriority:    31
+  - Regex:           '^<winioctl\.h>$'
+    Priority:        30
+    SortPriority:    32
   - Regex:           '\.hpp[>"]$'
-    Priority:        5
+    Priority:        40
   - Regex:           '.*'
-    Priority:        2
+    Priority:        20
 # IncludeIsMainRegex: '(Test)?$'
 # IncludeIsMainSourceRegex: ''
 # IndentAccessModifiers: false
@@ -203,6 +225,7 @@ NamespaceIndentation: All
 # PenaltyBreakComment: 300
 # PenaltyBreakFirstLessLess: 120
 # PenaltyBreakOpenParenthesis: 0
+# PenaltyBreakScopeResolution: 500
 # PenaltyBreakString: 1000
 # PenaltyBreakTemplateDeclaration: 10
 # PenaltyExcessCharacter: 1000000
@@ -222,6 +245,7 @@ RemoveSemicolon: true
 # RequiresExpressionIndentation: OuterScope
 # SeparateDefinitionBlocks: Leave
 # ShortNamespaceLines: 1
+# SkipMacroDefinitionBody: false
 # SortIncludes:    CaseSensitive
 # SortJavaStaticImport: Before
 # SortUsingDeclarations: LexicographicNumeric
@@ -244,6 +268,7 @@ SpaceAfterCStyleCast: true
 #   AfterFunctionDeclarationName: false
 #   AfterIfMacros:   true
 #   AfterOverloadedOperator: false
+#   AfterPlacementOperator: true
 #   AfterRequiresInClause: false
 #   AfterRequiresInExpression: false
 #   BeforeNonEmptyParentheses: false

README.md

@@ -141,7 +141,7 @@ Just try to follow these rules, so we can spend more time fixing bugs and implem
 
 # How To Build With The Visual Studio IDE
 
-1. Install Visual Studio 2022 17.12 Preview 1 or later.
+1. Install Visual Studio 2022 17.12 Preview 2 or later.
     * Select "Windows 11 SDK (10.0.22621.0)" in the VS Installer.
     * Select "MSVC v143 - VS 2022 C++ ARM64/ARM64EC build tools (Latest)" in the VS Installer
     if you would like to build the ARM64/ARM64EC target.
@@ -160,7 +160,7 @@ Just try to follow these rules, so we can spend more time fixing bugs and implem
 
 # How To Build With A Native Tools Command Prompt
 
-1. Install Visual Studio 2022 17.12 Preview 1 or later.
+1. Install Visual Studio 2022 17.12 Preview 2 or later.
     * Select "Windows 11 SDK (10.0.22621.0)" in the VS Installer.
     * Select "MSVC v143 - VS 2022 C++ ARM64/ARM64EC build tools (Latest)" in the VS Installer
     if you would like to build the ARM64/ARM64EC target.

azure-devops/config.yml

@@ -5,7 +5,7 @@
 
 variables:
 - name: poolName
-  value: 'StlBuild-2024-08-14T0018-Pool'
+  value: 'StlBuild-2024-09-10T1506-Pool'
   readonly: true
 - name: poolDemands
   value: 'EnableSpotVM -equals false'

azure-devops/provision-image.ps1

@@ -40,10 +40,10 @@ foreach ($workload in $VisualStudioWorkloads) {
 }
 
 # https://github.com/PowerShell/PowerShell/releases/latest
-$PowerShellUrl = 'https://github.com/PowerShell/PowerShell/releases/download/v7.4.4/PowerShell-7.4.4-win-x64.msi'
+$PowerShellUrl = 'https://github.com/PowerShell/PowerShell/releases/download/v7.4.5/PowerShell-7.4.5-win-x64.msi'
 $PowerShellArgs = @('/quiet', '/norestart')
 
-$PythonUrl = 'https://www.python.org/ftp/python/3.12.5/python-3.12.5-amd64.exe'
+$PythonUrl = 'https://www.python.org/ftp/python/3.12.6/python-3.12.6-amd64.exe'
 $PythonArgs = @('/quiet', 'InstallAllUsers=1', 'PrependPath=1', 'CompileAll=1', 'Include_doc=0')
 
 $CudaUrl = 'https://developer.download.nvidia.com/compute/cuda/12.4.0/local_installers/cuda_12.4.0_551.61_windows.exe'

stl/inc/__msvc_bit_utils.hpp

@@ -127,45 +127,18 @@ _NODISCARD int _Checked_x86_x64_countl_zero(const _Ty _Val) noexcept {
 #endif // (defined(_M_IX86) && !defined(_M_HYBRID_X86_ARM64)) || (defined(_M_X64) && !defined(_M_ARM64EC))
 
 #if defined(_M_ARM) || defined(_M_ARM64) || defined(_M_ARM64EC) || defined(_M_HYBRID_X86_ARM64)
-#ifdef __clang__ // TRANSITION, GH-1586
-_NODISCARD constexpr int _Clang_arm_arm64_countl_zero(const unsigned short _Val) {
-    return __builtin_clzs(_Val);
-}
-
-_NODISCARD constexpr int _Clang_arm_arm64_countl_zero(const unsigned int _Val) {
-    return __builtin_clz(_Val);
-}
-
-_NODISCARD constexpr int _Clang_arm_arm64_countl_zero(const unsigned long _Val) {
-    return __builtin_clzl(_Val);
-}
-
-_NODISCARD constexpr int _Clang_arm_arm64_countl_zero(const unsigned long long _Val) {
-    return __builtin_clzll(_Val);
-}
-#endif // TRANSITION, GH-1586
-
 template <class _Ty>
 _NODISCARD int _Checked_arm_arm64_countl_zero(const _Ty _Val) noexcept {
     constexpr int _Digits = _Unsigned_integer_digits<_Ty>;
     if (_Val == 0) {
         return _Digits;
     }
 
-#ifdef __clang__ // TRANSITION, GH-1586
-    if constexpr (is_same_v<remove_cv_t<_Ty>, unsigned char>) {
-        return _Clang_arm_arm64_countl_zero(static_cast<unsigned short>(_Val))
-             - (_Unsigned_integer_digits<unsigned short> - _Digits);
-    } else {
-        return _Clang_arm_arm64_countl_zero(_Val);
-    }
-#else // ^^^ workaround / no workaround vvv
     if constexpr (_Digits <= 32) {
         return static_cast<int>(_CountLeadingZeros(_Val)) - (_Unsigned_integer_digits<unsigned long> - _Digits);
     } else {
         return static_cast<int>(_CountLeadingZeros64(_Val));
     }
-#endif // ^^^ no workaround ^^^
 }
 #endif // defined(_M_ARM) || defined(_M_ARM64) || defined(_M_ARM64EC) || defined(_M_HYBRID_X86_ARM64)
 #endif // _HAS_COUNTL_ZERO_INTRINSICS