diff options
Diffstat (limited to 'gcc/internal-fn.c')
| -rw-r--r-- | gcc/internal-fn.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/internal-fn.c b/gcc/internal-fn.c index 8ede9ca..34d4f9e 100644 --- a/gcc/internal-fn.c +++ b/gcc/internal-fn.c @@ -3183,6 +3183,42 @@ direct_internal_fn_supported_p (internal_fn fn, tree type, return direct_internal_fn_supported_p (fn, tree_pair (type, type), opt_type); } +/* If FN is commutative in two consecutive arguments, return the + index of the first, otherwise return -1. */ + +int +first_commutative_argument (internal_fn fn) +{ + switch (fn) + { + case IFN_FMA: + case IFN_FMS: + case IFN_FNMA: + case IFN_FNMS: + case IFN_AVG_FLOOR: + case IFN_AVG_CEIL: + case IFN_FMIN: + case IFN_FMAX: + return 0; + + case IFN_COND_ADD: + case IFN_COND_MUL: + case IFN_COND_MIN: + case IFN_COND_MAX: + case IFN_COND_AND: + case IFN_COND_IOR: + case IFN_COND_XOR: + case IFN_COND_FMA: + case IFN_COND_FMS: + case IFN_COND_FNMA: + case IFN_COND_FNMS: + return 1; + + default: + return -1; + } +} + /* Return true if IFN_SET_EDOM is supported. */ bool |