diff options
Diffstat (limited to 'gcc/gengenrtl.c')
| -rw-r--r-- | gcc/gengenrtl.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/gengenrtl.c b/gcc/gengenrtl.c index e07b940..762c96fa 100644 --- a/gcc/gengenrtl.c +++ b/gcc/gengenrtl.c @@ -26,6 +26,27 @@ Boston, MA 02111-1307, USA. */ #include "rtl.h" #undef abort +#include "real.h" + +/* Calculate the format for CONST_DOUBLE. This depends on the relative + widths of HOST_WIDE_INT and REAL_VALUE_TYPE. + We only need to go out to e0wwww, since min(HOST_WIDE_INT)==32 and + max(LONG_DOUBLE_TYPE_SIZE)==128. + This is duplicated in rtl.c. + A number of places assume that there are always at least two 'w' + slots in a CONST_DOUBLE, so we provide them even if one would suffice. */ +#if HOST_BITS_PER_WIDE_INT >= LONG_DOUBLE_TYPE_SIZE +#define CONST_DOUBLE_FORMAT "e0ww" +#elif HOST_BITS_PER_WIDE_INT*2 >= LONG_DOUBLE_TYPE_SIZE +#define CONST_DOUBLE_FORMAT "e0ww" +#elif HOST_BITS_PER_WIDE_INT*3 >= LONG_DOUBLE_TYPE_SIZE +#define CONST_DOUBLE_FORMAT "e0www" +#elif HOST_BITS_PER_WIDE_INT*4 >= LONG_DOUBLE_TYPE_SIZE +#define CONST_DOUBLE_FORMAT "e0wwww" +#else +#define CONST_DOUBLE_FORMAT /* nothing - will cause syntax error */ +#endif + struct rtx_definition { |