From: Richard Henderson <rth@redhat.com>
Date: Fri, 12 Nov 2004 21:26:54 +0000 (-0800)
Subject: re PR target/17778 (regression in evaluating long double hexadecimal constants)
X-Git-Tag: releases/gcc-3.4.4~522
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26a8f47c56eca6e8eed7506f05a3b3de15013d0b;p=thirdparty%2Fgcc.git

re PR target/17778 (regression in evaluating long double hexadecimal constants)

        PR 17778
        * config/i386/i386.h (TARGET_96_ROUND_53_LONG_DOUBLE): New.
        * config/i386/freebsd.h (SUBTARGET_OVERRIDE_OPTIONS): Remove.
        (TARGET_96_ROUND_53_LONG_DOUBLE): New.
        * config/i386/i386-modes.def (XF): Use it.

From-SVN: r90544
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a6a209984584..e771c6b5d88d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2004-11-12  Richard Henderson  <rth@redhat.com>
+
+	PR 17778
+	* config/i386/i386.h (TARGET_96_ROUND_53_LONG_DOUBLE): New.
+	* config/i386/freebsd.h (SUBTARGET_OVERRIDE_OPTIONS): Remove.
+	(TARGET_96_ROUND_53_LONG_DOUBLE): New.
+	* config/i386/i386-modes.def (XF): Use it.
+
 2004-11-12  Ralf Corsepius  <ralf.corsepius@rtems.org>
 
 	* config/rs6000/t-rtems (MULTILIB_NEW_EXCEPTIONS_ONLY):
@@ -217,9 +225,9 @@
 
 2004-10-13  Richard Henderson  <rth@redhat.com>
 
-        PR debug/15860
-        * dwarf2out.c (rtl_for_decl_location): Apply big-endian correction
-        for DECL_INCOMING_RTL.
+	PR debug/15860
+	* dwarf2out.c (rtl_for_decl_location): Apply big-endian correction
+	for DECL_INCOMING_RTL.
 
 2004-10-13  Richard Henderson  <rth@redhat.com>
 
diff --git a/gcc/config/i386/freebsd.h b/gcc/config/i386/freebsd.h
index 9e538e916a27..4fc7a9ae4786 100644
--- a/gcc/config/i386/freebsd.h
+++ b/gcc/config/i386/freebsd.h
@@ -138,12 +138,5 @@ Boston, MA 02111-1307, USA.  */
 
 /* FreeBSD sets the rounding precision of the FPU to 53 bits.  Let the
    compiler get the contents of <float.h> and std::numeric_limits correct.  */
-#define SUBTARGET_OVERRIDE_OPTIONS			\
-  do {							\
-    if (!TARGET_64BIT) {				\
-      REAL_MODE_FORMAT (XFmode)				\
-	= &ieee_extended_intel_96_round_53_format;	\
-      REAL_MODE_FORMAT (TFmode)				\
-	= &ieee_extended_intel_96_round_53_format;	\
-    }							\
-  } while (0)
+#undef TARGET_96_ROUND_53_LONG_DOUBLE
+#define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT)
diff --git a/gcc/config/i386/i386-modes.def b/gcc/config/i386/i386-modes.def
index 89c83c441872..36c6d42e2d71 100644
--- a/gcc/config/i386/i386-modes.def
+++ b/gcc/config/i386/i386-modes.def
@@ -29,6 +29,8 @@ Boston, MA 02111-1307, USA.  */
 FLOAT_MODE (XF, 12, ieee_extended_intel_96_format);
 ADJUST_FLOAT_FORMAT (XF, (TARGET_128BIT_LONG_DOUBLE
 			  ? &ieee_extended_intel_128_format
+			  : TARGET_96_ROUND_53_LONG_DOUBLE
+			  ? &ieee_extended_intel_96_round_53_format
 			  : &ieee_extended_intel_96_format));
 ADJUST_BYTESIZE  (XF, TARGET_128BIT_LONG_DOUBLE ? 16 : 12);
 ADJUST_ALIGNMENT (XF, TARGET_128BIT_LONG_DOUBLE ? 16 : 4);
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index f5be3409c705..e1f6a5001d17 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -447,6 +447,10 @@ extern int x86_prefetch_sse;
    redefines this to 1.  */
 #define TARGET_MACHO 0
 
+/* Subtargets may reset this to 1 in order to enable 96-bit long double
+   with the rounding mode forced to 53 bits.  */
+#define TARGET_96_ROUND_53_LONG_DOUBLE 0
+
 /* This macro is similar to `TARGET_SWITCHES' but defines names of
    command options that have values.  Its definition is an
    initializer with a subgrouping for each command option.