PR target/31701

[pf3gnuchains/gcc-fork.git] / gcc / libgcc2.h

diff --git a/gcc/libgcc2.h b/gcc/libgcc2.h
index d15ab8d..c6084dc 100644 (file)
--- a/gcc/libgcc2.h
+++ b/gcc/libgcc2.h
@@ -39,10 +39,6 @@ extern void __clear_cache (char *, char *);
 extern void __eprintf (const char *, const char *, unsigned int, const char *)
   __attribute__ ((__noreturn__));
 
-struct exception_descriptor;
-extern short int __get_eh_table_language (struct exception_descriptor *);
-extern short int __get_eh_table_version (struct exception_descriptor *);
-
 /* Permit the tm.h file to select the endianness to use just for this
    file.  This is used when the endianness is determined when the
    compiler is run.  */
@@ -119,10 +115,16 @@ extern short int __get_eh_table_version (struct exception_descriptor *);
 
 /* FIXME: This #ifdef probably should be removed, ie. enable the test
    for mips too.  */
+/* Don't use IBM Extended Double TFmode for TI->SF calculations.
+   The conversion from long double to float suffers from double
+   rounding, because we convert via double.  In other cases, going
+   through the software fp routines is much slower than the fallback.  */
 #ifdef __powerpc__
-#define IS_IBM_EXTENDED(SIZE) (SIZE == 106)
+#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE == 106)
+#elif defined(WIDEST_HARDWARE_FP_SIZE)
+#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE > WIDEST_HARDWARE_FP_SIZE)
 #else
-#define IS_IBM_EXTENDED(SIZE) 0
+#define AVOID_FP_TYPE_CONVERSION(SIZE) 0
 #endif
 
 /* In the first part of this file, we are interfacing to calls generated
@@ -345,13 +347,13 @@ extern Wtype __addvSI3 (Wtype, Wtype);
 extern Wtype __subvSI3 (Wtype, Wtype);
 extern Wtype __mulvSI3 (Wtype, Wtype);
 extern Wtype __negvSI2 (Wtype);
-extern UWtype __bswapsi2 (UWtype);
+extern SItype __bswapsi2 (SItype);
 extern DWtype __absvDI2 (DWtype);
 extern DWtype __addvDI3 (DWtype, DWtype);
 extern DWtype __subvDI3 (DWtype, DWtype);
 extern DWtype __mulvDI3 (DWtype, DWtype);
 extern DWtype __negvDI2 (DWtype);
-extern UDWtype __bswapdi2 (UDWtype);
+extern DItype __bswapdi2 (DItype);
 
 #ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
 extern SItype __absvsi2 (SItype);