microsoft · StephanTLavavej · May 17, 2025 · May 17, 2025 · May 17, 2025 · May 17, 2025
@@ -1,13 +1,13 @@
 # Copyright (c) Microsoft Corporation.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required(VERSION 3.30.0)
+cmake_minimum_required(VERSION 3.31.0)
 
 set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
 project(msvc_standard_libraries LANGUAGES CXX)
 
-if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.44.35109.1")
-    message(FATAL_ERROR "The STL must be built with VS 2022 17.14 Preview 3 or later.")
+if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.44.35207.1")
+    message(FATAL_ERROR "The STL must be built with VS 2022 17.14 Preview 7 or later.")
 endif()
 
 include(CheckCXXSourceCompiles)
@@ -27,7 +27,7 @@ endif()
 
 string(TOLOWER "${VCLIBS_TARGET_ARCHITECTURE}" VCLIBS_TARGET_ARCHITECTURE)
 
-if(VCLIBS_TARGET_ARCHITECTURE MATCHES "^x64$|^x86$")
+if(VCLIBS_TARGET_ARCHITECTURE MATCHES "^(x86|x64)$")
     enable_language(ASM_MASM)
 endif()
 
@@ -67,7 +67,7 @@ elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "x64")
     set(VCLIBS_I386_OR_AMD64 "amd64")
     set(VCLIBS_X86_OR_X64 "x64")
     add_compile_definitions(_AMD64_ _VCRT_WIN32_WINNT=0x0501 _STL_WIN32_WINNT=0x0501)
-elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "armv7")
+elseif(VCLIBS_TARGET_ARCHITECTURE MATCHES "^(arm|armv7)$")
     set(VCLIBS_TARGET_ARCHITECTURE "arm")
     set(VCLIBS_I386_OR_AMD64 "arm")
     set(VCLIBS_X86_OR_X64 "arm")
@@ -108,6 +108,12 @@ if(STL_USE_ANALYZE)
     # LPARAM is a LONG_PTR (intptr_t), and it's invalid to apply _In_opt_ to a non-pointer.
     # As of the Windows 11 SDK (10.0.22621.0), there are 5 total occurrences of warning C6553 affecting the STL's build.
     add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:/analyze:autolog-;/wd6553>")
+
+    if(VCLIBS_TARGET_ARCHITECTURE STREQUAL "arm64ec")
+        # TRANSITION, the Windows SDK emits "warning C28301: No annotations for first declaration of 'meow'"
+        # for various intrinsics when building for ARM64EC.
+        add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:/wd28301>")
+    endif()
 endif()
 
 set(VCLIBS_DEBUG_OPTIONS "$<$<COMPILE_LANGUAGE:CXX>:/Od>")

@@ -141,15 +141,15 @@ 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 17.14 Preview 3 or later.
+1. Install Visual Studio 2022 17.14 Preview 7 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.
     * Select "MSVC v143 - VS 2022 C++ ARM build tools (Latest)" in the VS Installer
     if you would like to build the ARM target.
     * We recommend selecting "C++ CMake tools for Windows" in the VS Installer.
     This will ensure that you're using supported versions of CMake and Ninja.
-    * Otherwise, install [CMake][] 3.30.0 or later, and [Ninja][] 1.12.1 or later.
+    * Otherwise, install [CMake][] 3.31.0 or later, and [Ninja][] 1.12.1 or later.
     * Make sure [Python][] 3.13 or later is available to CMake.
 2. Open Visual Studio, and choose the "Clone or check out code" option. Enter the URL of this repository,
    `https://github.com/microsoft/STL`.
@@ -160,15 +160,15 @@ 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 17.14 Preview 3 or later.
+1. Install Visual Studio 2022 17.14 Preview 7 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.
     * Select "MSVC v143 - VS 2022 C++ ARM build tools (Latest)" in the VS Installer
     if you would like to build the ARM target.
     * We recommend selecting "C++ CMake tools for Windows" in the VS Installer.
     This will ensure that you're using supported versions of CMake and Ninja.
-    * Otherwise, install [CMake][] 3.30.0 or later, and [Ninja][] 1.12.1 or later.
+    * Otherwise, install [CMake][] 3.31.0 or later, and [Ninja][] 1.12.1 or later.
     * Make sure [Python][] 3.13 or later is available to CMake.
 2. Open a command prompt.
 3. Change directories to a location where you'd like a clone of this STL repository.

@@ -26,6 +26,7 @@ stages:
         parameters:
           hostArch: x64
           targetArch: x64
+          targetPlatform: x64
           asanBuild: true
           testTargets: STL-ASan-CI
 
@@ -40,6 +41,7 @@ stages:
         parameters:
           hostArch: x86
           targetArch: x86
+          targetPlatform: x86
           asanBuild: true
           testTargets: STL-ASan-CI
 

@@ -6,6 +6,8 @@ parameters:
   type: string
 - name: targetArch
   type: string
+- name: targetPlatform
+  type: string
 - name: analyzeBuild
   type: boolean
   default: false
@@ -28,7 +30,7 @@ parameters:
   type: boolean
   default: false
 jobs:
-- job: '${{ parameters.targetArch }}'
+- job: '${{ parameters.targetPlatform }}'
   strategy:
     parallel: ${{ parameters.numShards }}
   timeoutInMinutes: 30
@@ -53,6 +55,7 @@ jobs:
     parameters:
       hostArch: ${{ parameters.hostArch }}
       targetArch: ${{ parameters.targetArch }}
+      targetPlatform: ${{ parameters.targetPlatform }}
       analyzeBuild: ${{ parameters.analyzeBuild }}
       asanBuild: ${{ parameters.asanBuild }}
       buildBenchmarks: ${{ parameters.buildBenchmarks }}
@@ -61,5 +64,6 @@ jobs:
     parameters:
       hostArch: ${{ parameters.hostArch }}
       targetArch: ${{ parameters.targetArch }}
+      targetPlatform: ${{ parameters.targetPlatform }}
       testTargets: ${{ parameters.testTargets }}
       skipTesting: ${{ parameters.skipTesting }}
@@ -6,6 +6,8 @@ parameters:
   type: string
 - name: targetArch
   type: string
+- name: targetPlatform
+  type: string
 - name: analyzeBuild
   type: boolean
 - name: asanBuild
@@ -36,6 +38,7 @@ steps:
     -DSTL_USE_ANALYZE=${{ parameters.analyzeBuild }} ^
     -DSTL_ASAN_BUILD=${{ parameters.asanBuild }} ^
     -DTESTS_BUILD_ONLY=${{ parameters.testsBuildOnly }} ^
+    -DVCLIBS_TARGET_ARCHITECTURE=${{ parameters.targetPlatform }} ^
     -S $(Build.SourcesDirectory) -B "$(buildOutputLocation)"
   displayName: 'Configure the STL'
   timeoutInMinutes: 2
@@ -57,6 +60,7 @@ steps:
     -DCMAKE_CXX_COMPILER=cl ^
     -DCMAKE_BUILD_TYPE=Release ^
     -DSTL_BINARY_DIR="$(buildOutputLocation)" ^
+    -DVCLIBS_TARGET_ARCHITECTURE=${{ parameters.targetPlatform }} ^
     -S $(Build.SourcesDirectory)/benchmarks -B "$(benchmarkBuildOutputLocation)"
   displayName: 'Configure the benchmarks'
   timeoutInMinutes: 2

@@ -5,7 +5,7 @@
 
 variables:
 - name: poolName
-  value: 'StlBuild-2025-04-16T1328-Pool'
+  value: 'StlBuild-2025-05-16T0735-Pool'
   readonly: true
 - name: poolDemands
   value: 'EnableSpotVM -equals false'

@@ -40,7 +40,7 @@ foreach ($workload in $VisualStudioWorkloads) {
 }
 
 # https://github.com/PowerShell/PowerShell/releases/latest
-$PowerShellUrl = 'https://github.com/PowerShell/PowerShell/releases/download/v7.5.0/PowerShell-7.5.0-win-x64.msi'
+$PowerShellUrl = 'https://github.com/PowerShell/PowerShell/releases/download/v7.5.1/PowerShell-7.5.1-win-x64.msi'
 $PowerShellArgs = @('/quiet', '/norestart')
 
 $PythonUrl = 'https://www.python.org/ftp/python/3.13.3/python-3.13.3-amd64.exe'

@@ -6,6 +6,8 @@ parameters:
   type: string
 - name: targetArch
   type: string
+- name: targetPlatform
+  type: string
 - name: testTargets
   type: string
 - name: skipTesting
@@ -28,8 +30,8 @@ steps:
     searchFolder: $(buildOutputLocation)
     testResultsFormat: JUnit
     testResultsFiles: '**/test-results.xml'
-    testRunTitle: 'test-${{ parameters.targetArch }}-$(System.JobPositionInPhase)'
+    testRunTitle: 'test-${{ parameters.targetPlatform }}-$(System.JobPositionInPhase)'
 - publish: $(buildOutputLocation)/test-results.xml
-  artifact: '${{ parameters.targetArch }}-$(System.JobPositionInPhase)-xml-$(System.JobId)'
+  artifact: '${{ parameters.targetPlatform }}-$(System.JobPositionInPhase)-xml-$(System.JobId)'
   condition: and(failed(), not(${{ parameters.skipTesting }}))
   displayName: 'Publish XML Artifact'
@@ -1,7 +1,7 @@
 # Copyright (c) Microsoft Corporation.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-# Build STL targeting x86, x64, arm, arm64
+# Build STL targeting x86, x64, arm, arm64, arm64ec
 
 variables:
   - template: azure-devops/config.yml
@@ -29,6 +29,7 @@ stages:
         parameters:
           hostArch: x64
           targetArch: x64
+          targetPlatform: x64
           analyzeBuild: true
           buildBenchmarks: true
           numShards: 1
@@ -45,6 +46,7 @@ stages:
         parameters:
           hostArch: x86
           targetArch: x86
+          targetPlatform: x86
           analyzeBuild: true
           buildBenchmarks: true
           numShards: 1
@@ -61,6 +63,7 @@ stages:
         parameters:
           hostArch: x64
           targetArch: arm
+          targetPlatform: arm
           analyzeBuild: true
           numShards: 1
           skipTesting: true
@@ -76,18 +79,36 @@ stages:
         parameters:
           hostArch: x64
           targetArch: arm64
+          targetPlatform: arm64
           analyzeBuild: true
           buildBenchmarks: true
           numShards: 1
           skipTesting: true
 
+  - stage: Early_Build_ARM64EC
+    dependsOn: []
+    displayName: 'Early Build ARM64EC'
+    pool:
+      name: ${{ variables.poolName }}
+      demands: ${{ variables.poolDemands }}
+    jobs:
+      - template: azure-devops/build-and-test.yml
+        parameters:
+          hostArch: x64
+          targetArch: arm64
+          targetPlatform: arm64ec
+          analyzeBuild: true
+          numShards: 1
+          skipTesting: true
+
   - stage: Build_And_Test_x64
     dependsOn:
       - Code_Format
       - Early_Build_x64
       - Early_Build_x86
       - Early_Build_ARM
       - Early_Build_ARM64
+      - Early_Build_ARM64EC
     displayName: 'Build and Test x64'
     pool:
       name: ${{ variables.poolName }}
@@ -97,6 +118,7 @@ stages:
         parameters:
           hostArch: x64
           targetArch: x64
+          targetPlatform: x64
 
   - stage: Build_And_Test_x86
     dependsOn: Build_And_Test_x64
@@ -109,6 +131,7 @@ stages:
         parameters:
           hostArch: x86
           targetArch: x86
+          targetPlatform: x86
 
   - stage: Build_And_Test_ARM
     dependsOn: Build_And_Test_x64
@@ -121,6 +144,7 @@ stages:
         parameters:
           hostArch: x64
           targetArch: arm
+          targetPlatform: arm
           testsBuildOnly: true
 
   - stage: Build_And_Test_ARM64
@@ -134,4 +158,5 @@ stages:
         parameters:
           hostArch: x64
           targetArch: arm64
+          targetPlatform: arm64
           testsBuildOnly: true
@@ -1,7 +1,7 @@
 # Copyright (c) Microsoft Corporation.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required(VERSION 3.30.0)
+cmake_minimum_required(VERSION 3.31.0)
 project(msvc_standard_libraries_benchmarks LANGUAGES CXX)
 
 if(DEFINED STL_BINARY_DIR)
@@ -23,7 +23,7 @@ if(DEFINED STL_BINARY_DIR)
         set(VCLIBS_I386_OR_AMD64 "i386")
     elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "x64")
         set(VCLIBS_I386_OR_AMD64 "amd64")
-    elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "armv7")
+    elseif(VCLIBS_TARGET_ARCHITECTURE MATCHES "^(arm|armv7)$")
         set(VCLIBS_I386_OR_AMD64 "arm")
     elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "arm64")
         set(VCLIBS_I386_OR_AMD64 "arm64")
@@ -116,8 +116,11 @@ add_benchmark(nth_element src/nth_element.cpp)
 add_benchmark(path_lexically_normal src/path_lexically_normal.cpp)
 add_benchmark(priority_queue_push_range src/priority_queue_push_range.cpp)
 add_benchmark(random_integer_generation src/random_integer_generation.cpp)
+add_benchmark(regex_search src/regex_search.cpp)
 add_benchmark(remove src/remove.cpp)
 add_benchmark(replace src/replace.cpp)
+add_benchmark(reverse src/reverse.cpp)
+add_benchmark(rotate src/rotate.cpp)
 add_benchmark(search src/search.cpp)
 add_benchmark(search_n src/search_n.cpp)
 add_benchmark(std_copy src/std_copy.cpp)

@@ -0,0 +1,38 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#include <benchmark/benchmark.h>
+#include <regex>
+#include <string>
+
+#include "lorem.hpp"
+
+using namespace std;
+
+void bm_lorem_search(benchmark::State& state, const char* pattern) {
+    string repeated_lorem{lorem_ipsum};
+    for (long long i = 0; i < state.range(); ++i) {
+        repeated_lorem += repeated_lorem;
+    }
+    regex re{pattern};
+
+    for (auto _ : state) {
+        benchmark::DoNotOptimize(repeated_lorem);
+        const char* pos = repeated_lorem.data();
+        const char* end = repeated_lorem.data() + repeated_lorem.size();
+        cmatch match;
+        for (; regex_search(pos, end, match, re); ++pos) {
+            benchmark::DoNotOptimize(match);
+            pos = match[0].second;
+            if (pos == end) {
+                break;
+            }
+        }
+    }
+}
+
+BENCHMARK_CAPTURE(bm_lorem_search, "bibe", "bibe")->Arg(2)->Arg(3)->Arg(4);
+BENCHMARK_CAPTURE(bm_lorem_search, "(bibe)+", "(bibe)+")->Arg(2)->Arg(3)->Arg(4);
+BENCHMARK_CAPTURE(bm_lorem_search, "(?:bibe)+", "(?:bibe)+")->Arg(2)->Arg(3)->Arg(4);
+
+BENCHMARK_MAIN();