Alexandre Julliard : d2d1: Use a gcc pragma instead of a compiler flag for -fexcess-precision.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: efa6b9f647bb397cb7c3677dbd10bd9e1ca45c20
URL:    https://gitlab.winehq.org/wine/wine/-/commit/efa6b9f647bb397cb7c3677dbd10bd9...

Author: Alexandre Julliard 
Date:   Fri Oct 14 09:58:57 2022 +0200

d2d1: Use a gcc pragma instead of a compiler flag for -fexcess-precision.

This will be needed to support building multiple architectures from
the same tree.

---

configure             | 71 ---------------------------------------------------
 configure.ac          |  7 -----
 dlls/d2d1/Makefile.in |  2 --
 dlls/d2d1/geometry.c  |  4 +++
 4 files changed, 4 insertions(+), 80 deletions(-)

diff --git a/configure b/configure
index 2efb2a37011..4adf86ac31d 100755
--- a/configure
+++ b/configure
@@ -733,7 +733,6 @@ GSM_PE_CFLAGS
 FAUDIO_PE_LIBS
 FAUDIO_PE_CFLAGS
 MINGW_PKG_CONFIG
-EXCESS_PRECISION_CFLAGS
 CROSSDEBUG
 DELAYLOADFLAG
 CROSSLDFLAGS
@@ -11792,42 +11791,6 @@ fi ;;
           esac
         fi

-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the cross-compiler supports -fexcess-precision=standard" >&5
-printf %s "checking whether the cross-compiler supports -fexcess-precision=standard... " >&6; }
-if test ${ac_cv_crosscflags__fexcess_precision_standard+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_wine_try_cflags_saved=$CFLAGS
-ac_wine_try_cflags_saved_cc=$CC
-ac_wine_try_cflags_saved_exeext=$ac_exeext
-CFLAGS="$CFLAGS $EXTRACROSSCFLAGS -nostartfiles -nodefaultlibs -fexcess-precision=standard"
-CC="$CROSSCC"
-ac_exeext=".exe"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-int __cdecl mainCRTStartup(void) { return 0; }
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_crosscflags__fexcess_precision_standard=yes
-else $as_nop
-  ac_cv_crosscflags__fexcess_precision_standard=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-CFLAGS=$ac_wine_try_cflags_saved
-CC=$ac_wine_try_cflags_saved_cc
-ac_exeext=$ac_wine_try_cflags_saved_exeext
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_crosscflags__fexcess_precision_standard" >&5
-printf "%s\n" "$ac_cv_crosscflags__fexcess_precision_standard" >&6; }
-if test "x$ac_cv_crosscflags__fexcess_precision_standard" = xyes
-then :
-  EXCESS_PRECISION_CFLAGS="-fexcess-precision=standard"
-
-fi
-
         if test "x$enable_werror" = "xyes"
         then
             { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the cross-compiler supports -Werror" >&5
@@ -19021,39 +18984,6 @@ then :
   EXTRACFLAGS="$EXTRACFLAGS -Wwrite-strings"
 fi

-  if test -z "$CROSSTARGET"
-  then
-    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -fexcess-precision=standard" >&5
-printf %s "checking whether the compiler supports -fexcess-precision=standard... " >&6; }
-if test ${ac_cv_cflags__fexcess_precision_standard+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_wine_try_cflags_saved=$CFLAGS
-CFLAGS="$CFLAGS -fexcess-precision=standard"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-int main(int argc, char **argv) { return 0; }
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_cflags__fexcess_precision_standard=yes
-else $as_nop
-  ac_cv_cflags__fexcess_precision_standard=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-CFLAGS=$ac_wine_try_cflags_saved
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cflags__fexcess_precision_standard" >&5
-printf "%s\n" "$ac_cv_cflags__fexcess_precision_standard" >&6; }
-if test "x$ac_cv_cflags__fexcess_precision_standard" = xyes
-then :
-  EXCESS_PRECISION_CFLAGS="-fexcess-precision=standard"
-
-fi
-  fi
-
     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wpointer-arith" >&5
 printf %s "checking whether the compiler supports -Wpointer-arith... " >&6; }
 if test ${ac_cv_cflags__Wpointer_arith+y}
@@ -23343,7 +23273,6 @@ EXTRACROSSCFLAGS = $EXTRACROSSCFLAGS
 CROSSLDFLAGS = $CROSSLDFLAGS
 DELAYLOADFLAG = $DELAYLOADFLAG
 CROSSDEBUG = $CROSSDEBUG
-EXCESS_PRECISION_CFLAGS = $EXCESS_PRECISION_CFLAGS
 MINGW_PKG_CONFIG = $MINGW_PKG_CONFIG
 FAUDIO_PE_CFLAGS = $FAUDIO_PE_CFLAGS
 FAUDIO_PE_LIBS = $FAUDIO_PE_LIBS
diff --git a/configure.ac b/configure.ac
index 41a29cee398..e11f3cfdb63 100644
--- a/configure.ac
+++ b/configure.ac
@@ -997,8 +997,6 @@ then
           esac
         fi

-        WINE_TRY_CROSSCFLAGS([-fexcess-precision=standard],[AC_SUBST(EXCESS_PRECISION_CFLAGS,"-fexcess-precision=standard")])
-
         if test "x$enable_werror" = "xyes"
         then
             WINE_TRY_CROSSCFLAGS([-Werror])
@@ -1847,11 +1845,6 @@ then
   WINE_TRY_CFLAGS([-Wvla])
   WINE_TRY_CFLAGS([-Wwrite-strings])

-  if test -z "$CROSSTARGET"
-  then
-    WINE_TRY_CFLAGS([-fexcess-precision=standard],[AC_SUBST(EXCESS_PRECISION_CFLAGS,"-fexcess-precision=standard")])
-  fi
-
   dnl Check for noisy string.h
   WINE_TRY_CFLAGS([-Wpointer-arith],
      [saved_string_h_CFLAGS=$CFLAGS
diff --git a/dlls/d2d1/Makefile.in b/dlls/d2d1/Makefile.in
index 2bfe57a372d..cd8887064e8 100644
--- a/dlls/d2d1/Makefile.in
+++ b/dlls/d2d1/Makefile.in
@@ -21,5 +21,3 @@ C_SRCS = \
    wic_render_target.c

RC_SRCS = version.rc
-
-geometry_EXTRADEFS = $(EXCESS_PRECISION_CFLAGS)
diff --git a/dlls/d2d1/geometry.c b/dlls/d2d1/geometry.c
index 684ac5e240a..d6ee91de005 100644
--- a/dlls/d2d1/geometry.c
+++ b/dlls/d2d1/geometry.c
@@ -16,6 +16,10 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

+#if defined(__GNUC__) && !defined(__clang__)
+#pragma GCC optimize "O2,no-strict-aliasing,excess-precision=standard"
+#endif
+
 #include "d2d1_private.h"
 #include <float.h>