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Implement configuration option for explicit native intrinsics

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It mimics -march=native, AVX and more to go, if needed.
This commit is contained in:
Anatol Belski 2018-01-29 18:24:27 +01:00
parent e51aadcc4e
commit acbd348969
2 changed files with 54 additions and 0 deletions
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47
win32/build/confutils.js
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@ -3219,6 +3219,53 @@ function toolset_setup_common_cflags()
}
}
function toolset_setup_intrinsic_cflags()
{
var default_enabled = "sse2";
/* XXX AVX and above needs to be reflected in /arch, for now SSE4.2 is
the best possible optimization.*/
var avail = WScript.CreateObject("Scripting.Dictionary");
avail.Add("sse", "__SSE__");
avail.Add("sse2", "__SSE2__");
avail.Add("sse3", "__SSE3__");
avail.Add("ssse3", "__SSSE3__");
avail.Add("sse4.1", "__SSE4_1__");
avail.Add("sse4.2", "__SSE4_2__");
/* From oldest to newest. */
var scale = new Array("sse", "sse2", "sse3", "ssse3", "sse4.1", "sse4.2");
if (VS_TOOLSET) {
if ("no" == PHP_NATIVE_INTRINSICS || "yes" == PHP_NATIVE_INTRINSICS) {
PHP_NATIVE_INTRINSICS = default_enabled;
}
if ("all" == PHP_NATIVE_INTRINSICS) {
var list = (new VBArray(avail.Keys())).toArray();
for (var i in list) {
AC_DEFINE(avail.Item(list[i]), 1);
}
} else {
var list = PHP_NATIVE_INTRINSICS.split(",");
var j = 0;
for (var k = 0; k < scale.length; k++) {
for (var i = 0; i < list.length; i++) {
var it = list[i].toLowerCase();
if (scale[k] == it) {
j = k > j ? k : j;
} else if (!avail.Exists(it)) {
WARNING("Unknown intrinsic name '" + it + "' ignored");
}
}
}
for (var i = 0; i <= j; i++) {
var it = scale[i];
AC_DEFINE(avail.Item(it), 1);
}
}
}
}
function toolset_setup_common_ldlags()
{
// General DLL link flags