Attachment 369473 Details for Bug 196488 – Detect SSE2 with CMake

[patch] Detect SSE2 with CMake

cmake-sse2.diff (text/plain), 11.23 KB, created by Xan Lopez on 2019-05-09 00:38:54 PDT

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Creator: Xan Lopez

Created: 2019-05-09 00:38:54 PDT

Size: 11.23 KB

patch

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>From 21f988b1be6804499e5a0c5234350fdf2ca20969 Mon Sep 17 00:00:00 2001
>From: =?UTF-8?q?Xan=20L=C3=B3pez?= <xan@igalia.com>
>Date: Tue, 2 Apr 2019 12:44:07 +0200
>Subject: [PATCH] [CMake] Detect SSE2 at compile time
> https://bugs.webkit.org/show_bug.cgi?id=196488
>
>Reviewed by NOBODY (OOPS!).
>
>Source/cmake/../..:
>
>* Source/cmake/DetectSSE2.cmake: Added.
>* Source/cmake/WebKitCompilerFlags.cmake: Detect SSE2 support and
>add SSE2 to the global compiler flags.
>
>Source/cmake/../../Tools:
>
>* Scripts/webkitdirs.pm:
>(generateBuildSystemFromCMakeProject): Do not add SSE2 flags here
>for x86 builds. This is now handled in WebKitCompilerFlags.cmake.
>
>Source/cmake/../JavaScriptCore:
>
>* assembler/MacroAssemblerX86Common.cpp: Remove unnecessary (and
>incorrect) static_assert.
>(JSC::MacroAssemblerX86Common::collectCPUFeatures):
>* assembler/MacroAssemblerX86Common.h: Remove SSE2 flags.
>---
> ChangeLog                                     | 11 ++++
> Source/JavaScriptCore/ChangeLog               | 12 ++++
> .../assembler/MacroAssemblerX86Common.cpp     |  7 ---
> .../assembler/MacroAssemblerX86Common.h       | 30 ---------
> Source/cmake/DetectSSE2.cmake                 | 61 +++++++++++++++++++
> Source/cmake/WebKitCompilerFlags.cmake        |  9 +++
> Tools/ChangeLog                               | 11 ++++
> Tools/Scripts/webkitdirs.pm                   |  9 ---
> 8 files changed, 104 insertions(+), 46 deletions(-)
> create mode 100644 Source/cmake/DetectSSE2.cmake
>
>diff --git a/ChangeLog b/ChangeLog
>index 21aca77892b..f186bbd5fb9 100644
>--- a/ChangeLog
>+++ b/ChangeLog
>@@ -1,3 +1,14 @@
>+2019-05-03  Xan LÃ³pez  <xan@igalia.com>
>+
>+        [CMake] Detect SSE2 at compile time
>+        https://bugs.webkit.org/show_bug.cgi?id=196488
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * Source/cmake/DetectSSE2.cmake: Added.
>+        * Source/cmake/WebKitCompilerFlags.cmake: Detect SSE2 support and
>+        add SSE2 to the global compiler flags.
>+
> 2019-05-08  Don Olmstead  <don.olmstead@sony.com>
> 
>         [PlayStation] Update port options
>diff --git a/Source/JavaScriptCore/ChangeLog b/Source/JavaScriptCore/ChangeLog
>index d28ce69f4a1..ed44d231c15 100644
>--- a/Source/JavaScriptCore/ChangeLog
>+++ b/Source/JavaScriptCore/ChangeLog
>@@ -1,3 +1,15 @@
>+2019-05-03  Xan LÃ³pez  <xan@igalia.com>
>+
>+        [CMake] Detect SSE2 at compile time
>+        https://bugs.webkit.org/show_bug.cgi?id=196488
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * assembler/MacroAssemblerX86Common.cpp: Remove unnecessary (and
>+        incorrect) static_assert.
>+        (JSC::MacroAssemblerX86Common::collectCPUFeatures):
>+        * assembler/MacroAssemblerX86Common.h: Remove SSE2 flags.
>+
> 2019-05-08  Yusuke Suzuki  <ysuzuki@apple.com>
> 
>         Unreviewed, build fix after r245064
>diff --git a/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp b/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp
>index 31753589df7..8c752c0d030 100644
>--- a/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp
>+++ b/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp
>@@ -168,11 +168,6 @@ static_assert(PROBE_OFFSETOF_REG(cpu.fprs, X86Registers::xmm15) == PROBE_CPU_XMM
> static_assert(sizeof(Probe::State) == PROBE_SIZE, "Probe::State::size's matches ctiMasmProbeTrampoline");
> static_assert((PROBE_EXECUTOR_OFFSET + PTR_SIZE) <= (PROBE_SIZE + OUT_SIZE), "Must have room after ProbeContext to stash the probe handler");
> 
>-#if CPU(X86)
>-// SSE2 is a hard requirement on x86.
>-static_assert(isSSE2Present(), "SSE2 support is required in JavaScriptCore");
>-#endif
>-
> #undef PROBE_OFFSETOF
> 
> #if CPU(X86)
>@@ -792,7 +787,6 @@ void MacroAssemblerX86Common::collectCPUFeatures()
>     std::call_once(onceKey, [] {
>         {
>             CPUID cpuid = getCPUID(0x1);
>-            s_sse2CheckState = (cpuid[3] & (1 << 26)) ? CPUIDCheckState::Set : CPUIDCheckState::Clear;
>             s_sse4_1CheckState = (cpuid[2] & (1 << 19)) ? CPUIDCheckState::Set : CPUIDCheckState::Clear;
>             s_sse4_2CheckState = (cpuid[2] & (1 << 20)) ? CPUIDCheckState::Set : CPUIDCheckState::Clear;
>             s_popcntCheckState = (cpuid[2] & (1 << 23)) ? CPUIDCheckState::Set : CPUIDCheckState::Clear;
>@@ -809,7 +803,6 @@ void MacroAssemblerX86Common::collectCPUFeatures()
>     });
> }
> 
>-MacroAssemblerX86Common::CPUIDCheckState MacroAssemblerX86Common::s_sse2CheckState = CPUIDCheckState::NotChecked;
> MacroAssemblerX86Common::CPUIDCheckState MacroAssemblerX86Common::s_sse4_1CheckState = CPUIDCheckState::NotChecked;
> MacroAssemblerX86Common::CPUIDCheckState MacroAssemblerX86Common::s_sse4_2CheckState = CPUIDCheckState::NotChecked;
> MacroAssemblerX86Common::CPUIDCheckState MacroAssemblerX86Common::s_avxCheckState = CPUIDCheckState::NotChecked;
>diff --git a/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h b/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h
>index 097bcb0bb86..ff097290ef3 100644
>--- a/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h
>+++ b/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h
>@@ -4197,41 +4197,11 @@ private:
>     }
> #endif
> 
>-#if CPU(X86)
>-#if OS(MAC_OS_X)
>-
>-    // All X86 Macs are guaranteed to support at least SSE2,
>-    static bool isSSE2Present()
>-    {
>-        return true;
>-    }
>-
>-#else // OS(MAC_OS_X)
>-    static bool isSSE2Present()
>-    {
>-        if (s_sse2CheckState == CPUIDCheckState::NotChecked)
>-            collectCPUFeatures();
>-        return s_sse2CheckState == CPUIDCheckState::Set;
>-    }
>-
>-#endif // OS(MAC_OS_X)
>-#elif !defined(NDEBUG) // CPU(X86)
>-
>-    // On x86-64 we should never be checking for SSE2 in a non-debug build,
>-    // but non debug add this method to keep the asserts above happy.
>-    static bool isSSE2Present()
>-    {
>-        return true;
>-    }
>-
>-#endif
>-
>     using CPUID = std::array<unsigned, 4>;
>     static CPUID getCPUID(unsigned level);
>     static CPUID getCPUIDEx(unsigned level, unsigned count);
>     JS_EXPORT_PRIVATE static void collectCPUFeatures();
> 
>-    JS_EXPORT_PRIVATE static CPUIDCheckState s_sse2CheckState;
>     JS_EXPORT_PRIVATE static CPUIDCheckState s_sse4_1CheckState;
>     JS_EXPORT_PRIVATE static CPUIDCheckState s_sse4_2CheckState;
>     JS_EXPORT_PRIVATE static CPUIDCheckState s_avxCheckState;
>diff --git a/Source/cmake/DetectSSE2.cmake b/Source/cmake/DetectSSE2.cmake
>new file mode 100644
>index 00000000000..dab07bead43
>--- /dev/null
>+++ b/Source/cmake/DetectSSE2.cmake
>@@ -0,0 +1,61 @@
>+#################################
>+# Check for the presence of SSE2.
>+#
>+# Once done, this will define:
>+# - SSE2_SUPPORT_FOUND - the system supports (at least) SSE2.
>+#
>+# Copyright (c) 2014, Pablo Fernandez Alcantarilla, Jesus Nuevo
>+# Copyright (c) 2019, Igalia S.L.
>+#
>+# Redistribution and use in source and binary forms, with or without modification,
>+# are permitted provided that the following conditions are met:
>+#
>+#   * Redistributions of source code must retain the above copyright notice,
>+#     this list of conditions and the following disclaimer.
>+#
>+#   * Redistributions in binary form must reproduce the above copyright notice,
>+#     this list of conditions and the following disclaimer in the documentation
>+#     and/or other materials provided with the distribution.
>+#
>+#   * Neither the name of the copyright holders nor the names of its contributors
>+#     may be used to endorse or promote products derived from this software without
>+#     specific prior written permission.
>+#
>+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
>+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
>+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
>+# SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
>+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
>+# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
>+# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
>+# WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+
>+set(SSE2_SUPPORT_FOUND FALSE)
>+
>+macro(CHECK_FOR_SSE2)
>+    include(CheckCXXSourceRuns)
>+
>+    check_cxx_source_runs("
>+        #include <emmintrin.h>
>+        int main ()
>+        {
>+            __m128d a, b;
>+            double vals[2] = {0};
>+            a = _mm_loadu_pd (vals);
>+            b = _mm_add_pd (a,a);
>+            _mm_storeu_pd (vals,b);
>+            return 0;
>+        }"
>+        HAVE_SSE2_EXTENSIONS)
>+
>+    if (COMPILER_IS_GCC_OR_CLANG OR (MSVC AND NOT CMAKE_CL_64))
>+        if (HAVE_SSE2_EXTENSIONS)
>+            set(SSE2_SUPPORT_FOUND TRUE)
>+            message(STATUS "Found SSE2 extensions")
>+        endif ()
>+    endif ()
>+
>+endmacro(CHECK_FOR_SSE2)
>+
>+CHECK_FOR_SSE2()
>diff --git a/Source/cmake/WebKitCompilerFlags.cmake b/Source/cmake/WebKitCompilerFlags.cmake
>index f56a47bbe4b..1f802d42a61 100644
>--- a/Source/cmake/WebKitCompilerFlags.cmake
>+++ b/Source/cmake/WebKitCompilerFlags.cmake
>@@ -144,6 +144,15 @@ if (COMPILER_IS_GCC_OR_CLANG)
>     if (CMAKE_COMPILER_IS_GNUCXX)
>         WEBKIT_PREPEND_GLOBAL_COMPILER_FLAGS(-Wno-expansion-to-defined)
>     endif ()
>+
>+    # Force SSE2 fp on x86 builds.
>+    if (WTF_CPU_X86 AND NOT CMAKE_CROSSCOMPILING)
>+        WEBKIT_PREPEND_GLOBAL_COMPILER_FLAGS(-msse2 -mfpmath=sse)
>+        include(DetectSSE2)
>+        if (NOT SSE2_SUPPORT_FOUND)
>+            message(FATAL_ERROR "SSE2 support is required to compile WebKit")
>+        endif ()
>+    endif ()
> endif ()
> 
> if (COMPILER_IS_GCC_OR_CLANG AND NOT MSVC)
>diff --git a/Tools/ChangeLog b/Tools/ChangeLog
>index db72aaa87f8..3165aa1fe3a 100644
>--- a/Tools/ChangeLog
>+++ b/Tools/ChangeLog
>@@ -1,3 +1,14 @@
>+2019-05-03  Xan LÃ³pez  <xan@igalia.com>
>+
>+        [CMake] Detect SSE2 at compile time
>+        https://bugs.webkit.org/show_bug.cgi?id=196488
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * Scripts/webkitdirs.pm:
>+        (generateBuildSystemFromCMakeProject): Do not add SSE2 flags here
>+        for x86 builds. This is now handled in WebKitCompilerFlags.cmake.
>+
> 2019-05-08  Adrian Perez de Castro  <aperez@igalia.com>
> 
>         [WPE] Update dependencies to use libwpe + WPEBackend-fdo 1.3.0
>diff --git a/Tools/Scripts/webkitdirs.pm b/Tools/Scripts/webkitdirs.pm
>index 71be0a9d1cb..fb0ef50104f 100755
>--- a/Tools/Scripts/webkitdirs.pm
>+++ b/Tools/Scripts/webkitdirs.pm
>@@ -2226,15 +2226,6 @@ sub generateBuildSystemFromCMakeProject
>     my $cmakeSourceDir = isCygwin() ? windowsSourceDir() : sourceDir();
>     push @args, '"' . $cmakeSourceDir . '"';
> 
>-    # Compiler options to keep floating point values consistent
>-    # between 32-bit and 64-bit architectures. This makes us use SSE
>-    # when our architecture is 32-bit ('i686') or when it's not but
>-    # the user has requested a 32-bit build.
>-    if ((architecture() eq "i686" || (architecture() eq "x86_64" && shouldBuild32Bit())) && !isCrossCompilation() && !isAnyWindows()) {
>-        $ENV{'CFLAGS'} = "-march=pentium4 -msse2 -mfpmath=sse " . ($ENV{'CFLAGS'} || "");
>-        $ENV{'CXXFLAGS'} = "-march=pentium4 -msse2 -mfpmath=sse " . ($ENV{'CXXFLAGS'} || "");
>-    }
>-
>     # We call system("cmake @args") instead of system("cmake", @args) so that @args is
>     # parsed for shell metacharacters.
>     my $wrapper = join(" ", wrapperPrefixIfNeeded()) . " ";
>-- 
>2.21.0
>

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