re PR middle-end/19920 (build broken on several targets due to recent 'DC' type update to libgcc2)

        PR 19920
        * libgcc2.c (WORD_SIZE): Remove all definitions; replace uses
        with W_TYPE_SIZE.
        (HIGH_WORD_COEFF, HIGH_HALFWORD_COEFF): Remove all definitions;
        replace uses with Wtype_MAXp1_F.
        (L_fixunstfdi, L_fixtfdi, L_floatditf, L_fixunsxfdi, L_fixxfdi,
        L_floatdixf, L_fixunsxfsi, L_fixunsdfdi, L_floatdidf, L_fixunsdfsi,
        L_powidf2, L_powixf2, L_powitf2, L_muldc3, L_divdc3, L_mulxc3,
        L_divxc3, L_multc3, L_divtc3): Protect with HAVE_DFMODE, HAVE_XFMODE,
        and HAVE_TFMODE as appropriate.
        (__fixunssfDI): Provide an implementation that doesn't need DFmode.
        (__floatdisf): Likewise.
        * libgcc2.h (LIBGCC2_DOUBLE_TYPE_SIZE): New.
        (HAVE_DFMODE, HAVE_XFMODE, HAVE_TFMODE): New.
        (Wtype_MAXp1_F): New.
        (DFtype, DCtype, __fixdfdi, __floatdidf, __fixunsdfSI, __fixunsdfDI,
        __powidf2, __divdc3, __muldc3): Protect with HAVE_DFMODE.

From-SVN: r95121

gcc/ChangeLog

+2005-02-16  Richard Henderson  <rth@redhat.com>
+
+	PR 19920
+	* libgcc2.c (WORD_SIZE): Remove all definitions; replace uses
+	with W_TYPE_SIZE.
+	(HIGH_WORD_COEFF, HIGH_HALFWORD_COEFF): Remove all definitions;
+	replace uses with Wtype_MAXp1_F.
+	(L_fixunstfdi, L_fixtfdi, L_floatditf, L_fixunsxfdi, L_fixxfdi,
+	L_floatdixf, L_fixunsxfsi, L_fixunsdfdi, L_floatdidf, L_fixunsdfsi,
+	L_powidf2, L_powixf2, L_powitf2, L_muldc3, L_divdc3, L_mulxc3,
+	L_divxc3, L_multc3, L_divtc3): Protect with HAVE_DFMODE, HAVE_XFMODE,
+	and HAVE_TFMODE as appropriate.
+	(__fixunssfDI): Provide an implementation that doesn't need DFmode.
+	(__floatdisf): Likewise.
+	* libgcc2.h (LIBGCC2_DOUBLE_TYPE_SIZE): New.
+	(HAVE_DFMODE, HAVE_XFMODE, HAVE_TFMODE): New.
+	(Wtype_MAXp1_F): New.
+	(DFtype, DCtype, __fixdfdi, __floatdidf, __fixunsdfSI, __fixunsdfDI,
+	__powidf2, __divdc3, __muldc3): Protect with HAVE_DFMODE.
+
 2005-02-16  Richard Earnshaw  <rearnsha@arm.com>
 
 	* PR target/19162

gcc/libgcc2.h

@@ -51,6 +51,9 @@ extern short int __get_eh_table_version (struct exception_descriptor *);
 #define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
 #endif
 
+#ifndef LIBGCC2_DOUBLE_TYPE_SIZE
+#define LIBGCC2_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE
+#endif
 #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
 #endif
@@ -91,15 +94,20 @@ typedef unsigned int UTItype	__attribute__ ((mode (TI)));
 #if BITS_PER_UNIT == 8
 
 typedef 	float SFtype	__attribute__ ((mode (SF)));
-typedef		float DFtype	__attribute__ ((mode (DF)));
 typedef _Complex float SCtype	__attribute__ ((mode (SC)));
-typedef _Complex float DCtype	__attribute__ ((mode (DC)));
 
+#if LIBGCC2_DOUBLE_TYPE_SIZE == 64 || LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64
+#define HAVE_DFMODE
+typedef		float DFtype	__attribute__ ((mode (DF)));
+typedef _Complex float DCtype	__attribute__ ((mode (DC)));
+#endif
 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80
+#define HAVE_XFMODE
 typedef		float XFtype	__attribute__ ((mode (XF)));
 typedef _Complex float XCtype	__attribute__ ((mode (XC)));
 #endif
 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128
+#define HAVE_TFMODE
 typedef		float TFtype	__attribute__ ((mode (TF)));
 typedef _Complex float TCtype	__attribute__ ((mode (TC)));
 #endif
@@ -200,6 +208,18 @@ typedef int word_type __attribute__ ((mode (__word__)));
 #define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1))
 #define Wtype_MIN (- Wtype_MAX - 1)
 
+#if W_TYPE_SIZE == 8
+# define Wtype_MAXp1_F	0x1p8f
+#elif W_TYPE_SIZE == 16
+# define Wtype_MAXp1_F	0x1p16f
+#elif W_TYPE_SIZE == 32
+# define Wtype_MAXp1_F	0x1p32f
+#elif W_TYPE_SIZE == 64
+# define Wtype_MAXp1_F	0x1p64f
+#else
+# error "expand the table"
+#endif
+
 #define __muldi3	__NDW(mul,3)
 #define __divdi3	__NDW(div,3)
 #define __udivdi3	__NDW(udiv,3)
@@ -301,23 +321,25 @@ extern SItype __negvsi2 (SItype);
 #endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
 
 #if BITS_PER_UNIT == 8
-extern DWtype __fixdfdi (DFtype);
 extern DWtype __fixsfdi (SFtype);
-extern DFtype __floatdidf (DWtype);
 extern SFtype __floatdisf (DWtype);
-extern UWtype __fixunsdfSI (DFtype);
 extern UWtype __fixunssfSI (SFtype);
-extern DWtype __fixunsdfDI (DFtype);
 extern DWtype __fixunssfDI (SFtype);
 extern SFtype __powisf2 (SFtype, Wtype);
-extern DFtype __powidf2 (DFtype, Wtype);
-
 extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype);
 extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);
+
+#ifdef HAVE_DFMODE
+extern DWtype __fixdfdi (DFtype);
+extern DFtype __floatdidf (DWtype);
+extern UWtype __fixunsdfSI (DFtype);
+extern DWtype __fixunsdfDI (DFtype);
+extern DFtype __powidf2 (DFtype, Wtype);
 extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype);
 extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);
+#endif
 
-#if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80
+#ifdef HAVE_XFMODE
 extern DWtype __fixxfdi (XFtype);
 extern DWtype __fixunsxfDI (XFtype);
 extern XFtype __floatdixf (DWtype);
@@ -327,7 +349,7 @@ extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype);
 extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype);
 #endif
 
-#if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128
+#ifdef HAVE_TFMODE
 extern DWtype __fixunstfDI (TFtype);
 extern DWtype __fixtfdi (TFtype);
 extern TFtype __floatditf (DWtype);