From 2b7f360cdd18e206614902c32b8b09f0d17a9042 Mon Sep 17 00:00:00 2001
From: Francois Kritzinger <francois@codesynthesis.com>
Date: Mon, 17 Jan 2022 08:51:28 +0200
Subject: [PATCH] Add checks for SIMD

---
 .../libbuild2/autoconf/checks/HAVE_AVX.h      | 14 +++++++++++++
 .../libbuild2/autoconf/checks/HAVE_AVX2.h     | 14 +++++++++++++
 .../libbuild2/autoconf/checks/HAVE_SSE.h      | 21 +++++++++++++++++++
 .../libbuild2/autoconf/checks/HAVE_SSE2.h     | 21 +++++++++++++++++++
 .../libbuild2/autoconf/checks/HAVE_SSE3.h     | 20 ++++++++++++++++++
 .../libbuild2/autoconf/checks/HAVE_SSE4_1.h   | 20 ++++++++++++++++++
 .../libbuild2/autoconf/checks/HAVE_SSE4_2.h   | 20 ++++++++++++++++++
 .../libbuild2/autoconf/checks/HAVE_SSSE3.h    | 20 ++++++++++++++++++
 .../libbuild2/autoconf/checks/HAVE_XOP.h      | 15 +++++++++++++
 9 files changed, 165 insertions(+)
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX2.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE2.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE3.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_1.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_2.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSSE3.h
 create mode 100644 libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_XOP.h

diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX.h
new file mode 100644
index 0000000..9172996
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX.h
@@ -0,0 +1,14 @@
+// HAVE_AVX
+
+#undef HAVE_AVX
+
+/* GCC, Clang: -mavx
+ *
+ * MSVC: /arch:{AVX,AVX2,AVX512}
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef __AVX__
+#  define HAVE_AVX 1
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX2.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX2.h
new file mode 100644
index 0000000..87f89f5
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_AVX2.h
@@ -0,0 +1,14 @@
+// HAVE_AVX2
+
+#undef HAVE_AVX2
+
+/* GCC, Clang: -mavx2
+ *
+ * MSVC: /arch:{AVX2,AVX512}
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef __AVX2__
+#  define HAVE_AVX2 1
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE.h
new file mode 100644
index 0000000..d508455
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE.h
@@ -0,0 +1,21 @@
+// HAVE_SSE
+
+#undef HAVE_SSE
+
+/* GCC, Clang: -msse
+ *
+ * MSVC (x86):    /arch:{SSE,SSE2,AVX,AVX2,AVX512}
+ * MSVC (X86-64): Always enabled
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef _MSC_VER
+#  if defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 1)
+#    define HAVE_SSE 1
+#  endif
+#else
+#  ifdef __SSE__
+#    define HAVE_SSE 1
+#  endif
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE2.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE2.h
new file mode 100644
index 0000000..d369c09
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE2.h
@@ -0,0 +1,21 @@
+// HAVE_SSE2
+
+#undef HAVE_SSE2
+
+/* GCC, Clang: -msse2
+ *
+ * MSVC (x86):    /arch:{SSE2,AVX,AVX2,AVX512}
+ * MSVC (X86-64): Always enabled
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef _MSC_VER
+#  if defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
+#    define HAVE_SSE2 1
+#  endif
+#else
+#  ifdef __SSE2__
+#    define HAVE_SSE2 1
+#  endif
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE3.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE3.h
new file mode 100644
index 0000000..39ac3f6
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE3.h
@@ -0,0 +1,20 @@
+// HAVE_SSE3
+
+#undef HAVE_SSE3
+
+/* GCC, Clang: -msse3
+ *
+ * MSVC: /arch:{AVX,AVX2,AVX512}
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef _MSC_VER
+#  ifdef __AVX__
+#    define HAVE_SSE3 1
+#  endif
+#else
+#  ifdef __SSE3__
+#    define HAVE_SSE3 1
+#  endif
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_1.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_1.h
new file mode 100644
index 0000000..4db78aa
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_1.h
@@ -0,0 +1,20 @@
+// HAVE_SSE4_1
+
+#undef HAVE_SSE4_1
+
+/* GCC, Clang: -msse4.1
+ *
+ * MSVC: /arch:{AVX,AVX2,AVX512}
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef _MSC_VER
+#  ifdef __AVX__
+#    define HAVE_SSE4_1 1
+#  endif
+#else
+#  ifdef __SSE4_1__
+#    define HAVE_SSE4_1 1
+#  endif
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_2.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_2.h
new file mode 100644
index 0000000..e59690e
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSE4_2.h
@@ -0,0 +1,20 @@
+// HAVE_SSE4_2
+
+#undef HAVE_SSE4_2
+
+/* GCC, Clang: -msse4.2
+ *
+ * MSVC: /arch:{AVX,AVX2,AVX512}
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef _MSC_VER
+#  ifdef __AVX__
+#    define HAVE_SSE4_2 1
+#  endif
+#else
+#  ifdef __SSE4_2__
+#    define HAVE_SSE4_2 1
+#  endif
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSSE3.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSSE3.h
new file mode 100644
index 0000000..741bbf3
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_SSSE3.h
@@ -0,0 +1,20 @@
+// HAVE_SSSE3
+
+#undef HAVE_SSSE3
+
+/* GCC, Clang: -mssse3
+ *
+ * MSVC: /arch:{AVX,AVX2,AVX512}
+ *
+ * This code is based on
+ * https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/global/qsimd.h.
+ */
+#ifdef _MSC_VER
+#  ifdef __AVX__
+#    define HAVE_SSSE3 1
+#  endif
+#else
+#  ifdef __SSSE3__
+#    define HAVE_SSSE3 1
+#  endif
+#endif
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_XOP.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_XOP.h
new file mode 100644
index 0000000..8458477
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE_XOP.h
@@ -0,0 +1,15 @@
+// HAVE_XOP
+
+#undef HAVE_XOP
+
+/* GCC, Clang: -mxop
+ *
+ * MSVC: No controlling compiler option nor indicating macro. The
+ *       documnetation is murkily says it's always enabled on AMD and only AMD
+ *       processors; see:
+ *       https://docs.microsoft.com/en-us/cpp/intrinsics/x86-intrinsics-list
+ *       https://docs.microsoft.com/en-us/cpp/intrinsics/x64-amd64-intrinsics-list)
+ */
+#ifdef __XOP__
+#  define HAVE_XOP 1
+#endif