m4_include(../config/acx.m4)
m4_include(../config/no-executables.m4)
m4_include(../config/math.m4)
+m4_include(../config/ax_check_define.m4)
+m4_include(../config/enable.m4)
+m4_include(../config/cet.m4)
dnl Check that we have a working GNU Fortran compiler
AC_DEFUN([LIBGFOR_WORKING_GFORTRAN], [
[Define to 1 if the target supports __attribute__((alias(...))).])
fi])
-dnl Check whether the target supports __sync_fetch_and_add.
-AC_DEFUN([LIBGFOR_CHECK_SYNC_FETCH_AND_ADD], [
- AC_CACHE_CHECK([whether the target supports __sync_fetch_and_add],
- libgfor_cv_have_sync_fetch_and_add, [
+dnl Check whether the target supports __atomic_fetch_add.
+AC_DEFUN([LIBGFOR_CHECK_ATOMIC_FETCH_ADD], [
+ AC_CACHE_CHECK([whether the target supports __atomic_fetch_add],
+ libgfor_cv_have_atomic_fetch_add, [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foovar = 0;]], [[
-if (foovar <= 0) return __sync_fetch_and_add (&foovar, 1);
-if (foovar > 10) return __sync_add_and_fetch (&foovar, -1);]])],
- libgfor_cv_have_sync_fetch_and_add=yes, libgfor_cv_have_sync_fetch_and_add=no)])
- if test $libgfor_cv_have_sync_fetch_and_add = yes; then
- AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD, 1,
- [Define to 1 if the target supports __sync_fetch_and_add])
+if (foovar <= 0) return __atomic_fetch_add (&foovar, 1, __ATOMIC_ACQ_REL);
+if (foovar > 10) return __atomic_add_fetch (&foovar, -1, __ATOMIC_ACQ_REL);]])],
+ libgfor_cv_have_atomic_fetch_add=yes, libgfor_cv_have_atomic_fetch_add=no)])
+ if test $libgfor_cv_have_atomic_fetch_add = yes; then
+ AC_DEFINE(HAVE_ATOMIC_FETCH_ADD, 1,
+ [Define to 1 if the target supports __atomic_fetch_add])
fi])
dnl Check for pragma weak.
;;
esac])
+dnl Check whether target effectively supports weakref
+AC_DEFUN([LIBGFOR_CHECK_WEAKREF], [
+ AC_CACHE_CHECK([whether the target supports weakref],
+ libgfor_cv_have_weakref, [
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Wunknown-pragmas -Werror"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+static int mytoto (int) __attribute__((__weakref__("toto")));
+]], [[return (mytoto != 0);]])],
+ libgfor_cv_have_weakref=yes, libgfor_cv_have_weakref=no)
+ CFLAGS="$save_CFLAGS"])
+ if test $libgfor_cv_have_weakref = yes; then
+ AC_DEFINE(SUPPORTS_WEAKREF, 1,
+ [Define to 1 if the target supports weakref])
+ fi])
+
dnl Check whether target can unlink a file still open.
AC_DEFUN([LIBGFOR_CHECK_UNLINK_OPEN_FILE], [
AC_CACHE_CHECK([whether the target can unlink an open file],
[Define if strerror_r takes two arguments and is available in <string.h>.]),)
CFLAGS="$ac_save_CFLAGS"
])
+
+dnl Check for AVX
+
+AC_DEFUN([LIBGFOR_CHECK_AVX], [
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-O2 -mavx"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ void _mm256_zeroall (void)
+ {
+ __builtin_ia32_vzeroall ();
+ }]], [[]])],
+ AC_DEFINE(HAVE_AVX, 1,
+ [Define if AVX instructions can be compiled.]),
+ [])
+ CFLAGS="$ac_save_CFLAGS"
+])
+
+dnl Check for AVX2
+
+AC_DEFUN([LIBGFOR_CHECK_AVX2], [
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-O2 -mavx2"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ typedef long long __v4di __attribute__ ((__vector_size__ (32)));
+ __v4di
+ mm256_is32_andnotsi256 (__v4di __X, __v4di __Y)
+ {
+ return __builtin_ia32_andnotsi256 (__X, __Y);
+ }]], [[]])],
+ AC_DEFINE(HAVE_AVX2, 1,
+ [Define if AVX2 instructions can be compiled.]),
+ [])
+ CFLAGS="$ac_save_CFLAGS"
+])
+
+dnl Check for AVX512f
+
+AC_DEFUN([LIBGFOR_CHECK_AVX512F], [
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-O2 -mavx512f"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ typedef double __m512d __attribute__ ((__vector_size__ (64)));
+ __m512d _mm512_add (__m512d a)
+ {
+ __m512d b = __builtin_ia32_addpd512_mask (a, a, a, 1, 4);
+ /* For -m64/-mx32 also verify that code will work even if
+ the target uses call saved zmm16+ and needs to emit
+ unwind info for them (e.g. on mingw). See PR79127. */
+#ifdef __x86_64__
+ asm volatile ("" : : : "zmm16", "zmm17", "zmm18", "zmm19");
+#endif
+ return b;
+ }]], [[]])],
+ AC_DEFINE(HAVE_AVX512F, 1,
+ [Define if AVX512f instructions can be compiled.]),
+ [])
+ CFLAGS="$ac_save_CFLAGS"
+])
+
+dnl Check for FMA3
+dnl
+AC_DEFUN([LIBGFOR_CHECK_FMA3], [
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-O2 -mfma -mno-fma4"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ typedef float __m128 __attribute__ ((__vector_size__ (16)));
+ typedef float __v4sf __attribute__ ((__vector_size__ (16)));
+ __m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C)
+ {
+ return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A,
+ (__v4sf)__B,
+ (__v4sf)__C);
+ }]], [[]])],
+ AC_DEFINE(HAVE_FMA3, 1,
+ [Define if FMA3 instructions can be compiled.]),
+ [])
+ CFLAGS="$ac_save_CFLAGS"
+])
+
+dnl Check for FMA4
+dnl
+AC_DEFUN([LIBGFOR_CHECK_FMA4], [
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-O2 -mfma4 -mno-fma"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ typedef float __m128 __attribute__ ((__vector_size__ (16)));
+ typedef float __v4sf __attribute__ ((__vector_size__ (16)));
+ __m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C)
+ {
+ return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A,
+ (__v4sf)__B,
+ (__v4sf)__C);
+ }]], [[]])],
+ AC_DEFINE(HAVE_FMA4, 1,
+ [Define if FMA4 instructions can be compiled.]),
+ [])
+ CFLAGS="$ac_save_CFLAGS"
+])
+
+dnl Check for -mprefer-avx128
+dnl This also defines an automake conditional.
+AC_DEFUN([LIBGFOR_CHECK_AVX128], [
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-O2 -mavx -mprefer-avx128"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+ void foo()
+ {
+ }]], [[]])],
+ AC_DEFINE(HAVE_AVX128, 1,
+ [Define if -mprefer-avx128 is supported.])
+ AM_CONDITIONAL([HAVE_AVX128],true),
+ [AM_CONDITIONAL([HAVE_AVX128],false)])
+ CFLAGS="$ac_save_CFLAGS"
+])
projects / thirdparty / gcc.git / blobdiff