* config.host (i[34567]-*-*, x86_64-*-*): Add t-crtfm instead of

	i386/t-crtfm to tmake_file.
	* config/i386/crtfastmath.c (set_fast_math_sse): New function.
	(set_fast_math): Use set_fast_math_sse for SSE targets.
	* config/i386/t-crtfm: Remove.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223578 138bc75d-0d04-0410-961f-82ee72b054a4

4 files changed, 65 insertions, 58 deletions

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 0b4c298471d..1bcd266d79a 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,11 @@
+2015-05-22  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config.host (i[34567]-*-*, x86_64-*-*): Add t-crtfm instead of
+	i386/t-crtfm to tmake_file.
+	* config/i386/crtfastmath.c (set_fast_math_sse): New function.
+	(set_fast_math): Use set_fast_math_sse for SSE targets.
+	* config/i386/t-crtfm: Remove.
+
 2015-05-21  Alan Modra  <amodra@gmail.com>
 
 	PR libgcc/66225
diff --git a/libgcc/config.host b/libgcc/config.host
index 8d826806d2a..05fd808e968 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -553,12 +553,12 @@ hppa*-*-openbsd*)
 	tmake_file="$tmake_file pa/t-openbsd"
 	;;
 i[34567]86-*-darwin*)
-	tmake_file="$tmake_file i386/t-crtpc i386/t-crtfm"
+	tmake_file="$tmake_file i386/t-crtpc t-crtfm"
 	tm_file="$tm_file i386/darwin-lib.h"
 	extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o"
 	;;
 x86_64-*-darwin*)
-	tmake_file="$tmake_file i386/t-crtpc i386/t-crtfm"
+	tmake_file="$tmake_file i386/t-crtpc t-crtfm"
 	tm_file="$tm_file i386/darwin-lib.h"
 	extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o"
 	;;
@@ -595,24 +595,24 @@ x86_64-*-openbsd*)
 	;;
 i[34567]86-*-linux*)
 	extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o"
-	tmake_file="${tmake_file} i386/t-crtpc i386/t-crtfm i386/t-crtstuff t-dfprules"
+	tmake_file="${tmake_file} i386/t-crtpc t-crtfm i386/t-crtstuff t-dfprules"
 	tm_file="${tm_file} i386/elf-lib.h"
 	md_unwind_header=i386/linux-unwind.h
 	;;
 i[34567]86-*-kfreebsd*-gnu | i[34567]86-*-knetbsd*-gnu | i[34567]86-*-gnu* | i[34567]86-*-kopensolaris*-gnu)
 	extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o"
-	tmake_file="${tmake_file} i386/t-crtpc i386/t-crtfm i386/t-crtstuff t-dfprules"
+	tmake_file="${tmake_file} i386/t-crtpc t-crtfm i386/t-crtstuff t-dfprules"
 	tm_file="${tm_file} i386/elf-lib.h"
 	;;
 x86_64-*-linux*)
 	extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o"
-	tmake_file="${tmake_file} i386/t-crtpc i386/t-crtfm i386/t-crtstuff t-dfprules"
+	tmake_file="${tmake_file} i386/t-crtpc t-crtfm i386/t-crtstuff t-dfprules"
 	tm_file="${tm_file} i386/elf-lib.h"
 	md_unwind_header=i386/linux-unwind.h
 	;;
 x86_64-*-kfreebsd*-gnu | x86_64-*-knetbsd*-gnu)
 	extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o"
-	tmake_file="${tmake_file} i386/t-crtpc i386/t-crtfm i386/t-crtstuff t-dfprules"
+	tmake_file="${tmake_file} i386/t-crtpc t-crtfm i386/t-crtstuff t-dfprules"
 	tm_file="${tm_file} i386/elf-lib.h"
 	;;
 i[34567]86-pc-msdosdjgpp*)
@@ -628,7 +628,7 @@ i[34567]86-*-rtems*)
 	extra_parts="$extra_parts crti.o crtn.o"
 	;;
 i[34567]86-*-solaris2* | x86_64-*-solaris2.1[0-9]*)
-	tmake_file="$tmake_file i386/t-crtpc i386/t-crtfm"
+	tmake_file="$tmake_file i386/t-crtpc t-crtfm"
 	extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o crtfastmath.o"
 	tm_file="${tm_file} i386/elf-lib.h"
 	md_unwind_header=i386/sol2-unwind.h
@@ -652,7 +652,7 @@ i[34567]86-*-cygwin*)
 	else
 		tmake_dlldir_file="i386/t-dlldir-x"
 	fi
-	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-cygwin i386/t-crtfm i386/t-chkstk t-dfprules"
+	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-cygwin t-crtfm i386/t-chkstk t-dfprules"
 	;;
 x86_64-*-cygwin*)
 	extra_parts="crtbegin.o crtbeginS.o crtend.o crtfastmath.o"
@@ -672,7 +672,7 @@ x86_64-*-cygwin*)
 		tmake_dlldir_file="i386/t-dlldir-x"
 	fi
 	# FIXME - dj - t-chkstk used to be in here, need a 64-bit version of that
-	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-cygwin i386/t-crtfm t-dfprules i386/t-chkstk"
+	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-cygwin t-crtfm t-dfprules i386/t-chkstk"
 	;;
 i[34567]86-*-mingw*)
 	extra_parts="crtbegin.o crtend.o crtfastmath.o"
@@ -700,7 +700,7 @@ i[34567]86-*-mingw*)
 	else
 		tmake_dlldir_file="i386/t-dlldir-x"
 	fi
-	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-mingw32 i386/t-crtfm i386/t-chkstk t-dfprules"
+	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-mingw32 t-crtfm i386/t-chkstk t-dfprules"
 	;;
 x86_64-*-mingw*)
 	case ${target_thread_file} in
@@ -723,7 +723,7 @@ x86_64-*-mingw*)
 	else
 		tmake_dlldir_file="i386/t-dlldir-x"
 	fi
-	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-mingw32 t-dfprules i386/t-crtfm i386/t-chkstk"
+	tmake_file="${tmake_file} ${tmake_eh_file} ${tmake_dlldir_file} i386/t-slibgcc-cygming i386/t-cygming i386/t-mingw32 t-dfprules t-crtfm i386/t-chkstk"
 	extra_parts="$extra_parts crtbegin.o crtend.o crtfastmath.o"
 	if test x$enable_vtable_verify = xyes; then
 		extra_parts="$extra_parts vtv_start.o vtv_end.o vtv_start_preinit.o vtv_end_preinit.o"
diff --git a/libgcc/config/i386/crtfastmath.c b/libgcc/config/i386/crtfastmath.c
index a0916ac8dcf..a6cae01d3f0 100644
--- a/libgcc/config/i386/crtfastmath.c
+++ b/libgcc/config/i386/crtfastmath.c
@@ -29,15 +29,57 @@
 /* All 64-bit targets have SSE and DAZ;
    only check them explicitly for 32-bit ones. */
 #include "cpuid.h"
-#endif
 
-static void __attribute__((constructor))
-#ifndef __x86_64__
+__attribute__ ((target("fxsr,sse")))
+static void
 /* The i386 ABI only requires 4-byte stack alignment, so this is necessary
    to make sure the fxsave struct gets correct alignment.
    See PR27537 and PR28621.  */
 __attribute__ ((force_align_arg_pointer))
+set_fast_math_sse (unsigned int edx)
+{
+  unsigned int mxcsr;
+  
+  if (edx & bit_FXSAVE)
+    {
+      /* Check if DAZ is available.  */
+      struct
+      {
+	unsigned short cwd;
+	unsigned short swd;
+	unsigned short twd;
+	unsigned short fop;
+	unsigned int fip;
+	unsigned int fcs;
+	unsigned int foo;
+	unsigned int fos;
+	unsigned int mxcsr;
+	unsigned int mxcsr_mask;
+	unsigned int st_space[32];
+	unsigned int xmm_space[32];
+	unsigned int padding[56];
+      } __attribute__ ((aligned (16))) fxsave;
+
+      /* This is necessary since some implementations of FXSAVE
+	 do not modify reserved areas within the image.  */
+      fxsave.mxcsr_mask = 0;
+
+      __builtin_ia32_fxsave (&fxsave);
+
+      mxcsr = fxsave.mxcsr;
+
+      if (fxsave.mxcsr_mask & MXCSR_DAZ)
+	mxcsr |= MXCSR_DAZ;
+    }
+  else
+    mxcsr = __builtin_ia32_stmxcsr ();
+
+  mxcsr |= MXCSR_FTZ;
+  __builtin_ia32_ldmxcsr (mxcsr);
+}
 #endif
+
+static void __attribute__((constructor))
 set_fast_math (void)
 {
 #ifndef __x86_64__
@@ -47,46 +89,7 @@ set_fast_math (void)
     return;
 
   if (edx & bit_SSE)
-    {
-      unsigned int mxcsr;
-  
-      if (edx & bit_FXSAVE)
-	{
-	  /* Check if DAZ is available.  */
-	  struct
-	    {
-	      unsigned short cwd;
-	      unsigned short swd;
-	      unsigned short twd;
-	      unsigned short fop;
-	      unsigned int fip;
-	      unsigned int fcs;
-	      unsigned int foo;
-	      unsigned int fos;
-	      unsigned int mxcsr;
-	      unsigned int mxcsr_mask;
-	      unsigned int st_space[32];
-	      unsigned int xmm_space[32];
-	      unsigned int padding[56];
-	    } __attribute__ ((aligned (16))) fxsave;
-
-	  /* This is necessary since some implementations of FXSAVE
-	     do not modify reserved areas within the image.  */
-	  fxsave.mxcsr_mask = 0;
-
-	  __builtin_ia32_fxsave (&fxsave);
-
-	  mxcsr = fxsave.mxcsr;
-
-	  if (fxsave.mxcsr_mask & MXCSR_DAZ)
-	    mxcsr |= MXCSR_DAZ;
-	}
-      else
-	mxcsr = __builtin_ia32_stmxcsr ();
-
-      mxcsr |= MXCSR_FTZ;
-      __builtin_ia32_ldmxcsr (mxcsr);
-    }
+    set_fast_math_sse (edx);
 #else
   unsigned int mxcsr = __builtin_ia32_stmxcsr ();
   mxcsr |= MXCSR_DAZ | MXCSR_FTZ;
diff --git a/libgcc/config/i386/t-crtfm b/libgcc/config/i386/t-crtfm
deleted file mode 100644
index b9da06bfd20..00000000000
--- a/libgcc/config/i386/t-crtfm
+++ /dev/null
@@ -1,4 +0,0 @@
-# This is an endfile, Use -minline-all-stringops to ensure
-# that __builtin_memset doesn't refer to the lib function memset().
-crtfastmath.o: $(srcdir)/config/i386/crtfastmath.c
-	$(gcc_compile) -mfxsr -msse -c $<