From ddb08349bbb2b6cae700ea4dd4cc4a85609bff5f Mon Sep 17 00:00:00 2001
From: NicJA <NicJA@fb15a70f-31f2-0310-bbcc-cdcc74a49acc>
Date: Tue, 16 Apr 2019 12:44:59 +0000
Subject: [PATCH] detect the availability of -ftree-vectorize and
 -fassociative-math

git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@56274 fb15a70f-31f2-0310-bbcc-cdcc74a49acc
---
 config/compiler.cfg.in |  5 +++++
 config/features        | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++
 config/features.in     | 18 +++++++++++++++++
 3 files changed, 77 insertions(+)

diff --git a/config/compiler.cfg.in b/config/compiler.cfg.in
index 362f41fcc3..9840d5a578 100644
--- a/config/compiler.cfg.in
+++ b/config/compiler.cfg.in
@@ -10,8 +10,13 @@ CFLAGS_NO_EXCEPTIONS                    := @aros_cflags_noexceptions@
 
 #
 CFLAGS_FAST_MATH                        := @aros_cflags_fast_math@
+CFLAGS_ASSOCIATIVE_MATH                 := @aros_cflags_associative_math@
 CFLAGS_NO_MATH_ERRNO                    := @aros_cflags_no_math_errno@
 CFLAGS_NO_TRAPPING_MATH                 := @aros_cflags_no_trapping_math@
+
+# Auto vectorize
+CFLAGS_TREE_VECTORIZE                   := @aros_cflags_tree_vectorize@
+
 #
 # LTO/Graphite optimization flags
 #
diff --git a/config/features b/config/features
index c92dbe4e43..a47179bce4 100755
--- a/config/features
+++ b/config/features
@@ -2837,8 +2837,10 @@ $as_echo "$aros_targetcfg_dir" >&6; }
 # C/ObjC
 #  -fexceptions
 #  -ffast-math
+#  -fassociative-math
 #  -fno-math-errno
 #  -fno-trapping-math
+#  -ftree-vectorize
 #  -flto
 #  -fwhole-program
 #  -floop-block
@@ -2931,6 +2933,32 @@ if test "x-$aros_fast_math" = "x-yes" ; then
     aros_cflags_fast_math=-ffast-math
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} accepts -fassociative-math" >&5
+$as_echo_n "checking whether ${CC} accepts -fassociative-math... " >&6; }
+CFLAGS=-fassociative-math
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  aros_associative_math="yes"
+else
+  aros_associative_math="no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $aros_associative_math" >&5
+$as_echo "$aros_associative_math" >&6; }
+if test "x-$aros_associative_math" = "x-yes" ; then
+    aros_cflags_associative_math=-fassociative-math
+fi
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} accepts -fno-math-errno" >&5
 $as_echo_n "checking whether ${CC} accepts -fno-math-errno... " >&6; }
 CFLAGS=-fno-math-errno
@@ -2983,6 +3011,32 @@ if test "x-$aros_no_trapping_math" = "x-yes" ; then
     aros_cflags_no_trapping_math=-fno-trapping-math
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} accepts -ftree-vectorize" >&5
+$as_echo_n "checking whether ${CC} accepts -ftree-vectorize... " >&6; }
+CFLAGS=-ftree-vectorize
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  aros_tree_vectorize="yes"
+else
+  aros_tree_vectorize="no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $aros_tree_vectorize" >&5
+$as_echo "$aros_tree_vectorize" >&6; }
+if test "x-$aros_tree_vectorize" = "x-yes" ; then
+    aros_cflags_tree_vectorize=-ftree-vectorize
+fi
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} accepts -flto" >&5
 $as_echo_n "checking whether ${CC} accepts -flto... " >&6; }
 CFLAGS=-flto
diff --git a/config/features.in b/config/features.in
index 86cb17d718..c49b7ee488 100644
--- a/config/features.in
+++ b/config/features.in
@@ -37,8 +37,10 @@ AC_MSG_RESULT($aros_targetcfg_dir)
 # C/ObjC
 #  -fexceptions
 #  -ffast-math
+#  -fassociative-math
 #  -fno-math-errno
 #  -fno-trapping-math
+#  -ftree-vectorize
 #  -flto
 #  -fwhole-program
 #  -floop-block
@@ -89,6 +91,14 @@ if test "x-$aros_fast_math" = "x-yes" ; then
     aros_cflags_fast_math=-ffast-math
 fi
 
+AC_MSG_CHECKING([whether ${CC} accepts -fassociative-math])
+CFLAGS=-fassociative-math
+AC_TRY_COMPILE(,, aros_associative_math="yes", aros_associative_math="no")
+AC_MSG_RESULT($aros_associative_math)
+if test "x-$aros_associative_math" = "x-yes" ; then
+    aros_cflags_associative_math=-fassociative-math
+fi
+
 AC_MSG_CHECKING([whether ${CC} accepts -fno-math-errno])
 CFLAGS=-fno-math-errno
 AC_TRY_COMPILE(,, aros_no_math_errno="yes", aros_no_math_errno="no")
@@ -105,6 +115,14 @@ if test "x-$aros_no_trapping_math" = "x-yes" ; then
     aros_cflags_no_trapping_math=-fno-trapping-math
 fi
 
+AC_MSG_CHECKING([whether ${CC} accepts -ftree-vectorize])
+CFLAGS=-ftree-vectorize
+AC_TRY_COMPILE(,, aros_tree_vectorize="yes", aros_tree_vectorize="no")
+AC_MSG_RESULT($aros_tree_vectorize)
+if test "x-$aros_tree_vectorize" = "x-yes" ; then
+    aros_cflags_tree_vectorize=-ftree-vectorize
+fi
+
 AC_MSG_CHECKING([whether ${CC} accepts -flto])
 CFLAGS=-flto
 AC_TRY_COMPILE(,, aros_lto="yes", aros_lto="no")
-- 
2.11.4.GIT