diff options
Diffstat (limited to 'contrib/gcc/optabs.c')
| -rw-r--r-- | contrib/gcc/optabs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/contrib/gcc/optabs.c b/contrib/gcc/optabs.c index 539b3ad..3b9a23d 100644 --- a/contrib/gcc/optabs.c +++ b/contrib/gcc/optabs.c @@ -2591,6 +2591,10 @@ expand_unop (enum machine_mode mode, optab unoptab, rtx op0, rtx target, goto try_libcall; } + /* We can't widen a bswap. */ + if (unoptab == bswap_optab) + goto try_libcall; + if (CLASS_HAS_WIDER_MODES_P (class)) for (wider_mode = GET_MODE_WIDER_MODE (mode); wider_mode != VOIDmode; @@ -5253,6 +5257,7 @@ init_optabs (void) absv_optab = init_optabv (ABS); addcc_optab = init_optab (UNKNOWN); one_cmpl_optab = init_optab (NOT); + bswap_optab = init_optab (BSWAP); ffs_optab = init_optab (FFS); clz_optab = init_optab (CLZ); ctz_optab = init_optab (CTZ); @@ -5456,6 +5461,11 @@ init_optabs (void) init_interclass_conv_libfuncs (trunc_optab, "trunc", MODE_FLOAT, MODE_DECIMAL_FLOAT); init_interclass_conv_libfuncs (trunc_optab, "trunc", MODE_DECIMAL_FLOAT, MODE_FLOAT); + /* Explicitly initialize the bswap libfuncs since we need them to be + valid for things other than word_mode. */ + set_optab_libfunc (bswap_optab, SImode, "__bswapsi2"); + set_optab_libfunc (bswap_optab, DImode, "__bswapdi2"); + /* Use cabs for double complex abs, since systems generally have cabs. Don't define any libcall for float complex, so that cabs will be used. */ if (complex_double_type_node) |
