diff options
Diffstat (limited to 'gcc/libgcc2.h')
| -rw-r--r-- | gcc/libgcc2.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/libgcc2.h b/gcc/libgcc2.h index b1c749f..c6084dc 100644 --- a/gcc/libgcc2.h +++ b/gcc/libgcc2.h @@ -115,10 +115,16 @@ extern void __eprintf (const char *, const char *, unsigned int, const char *) /* 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 |