diff options
Diffstat (limited to 'gcc/config/rs6000/rs6000-c.c')
| -rw-r--r-- | gcc/config/rs6000/rs6000-c.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000-c.c b/gcc/config/rs6000/rs6000-c.c index 90e445a9a8a..eb1539cf73a 100644 --- a/gcc/config/rs6000/rs6000-c.c +++ b/gcc/config/rs6000/rs6000-c.c @@ -4675,6 +4675,65 @@ assignment for unaligned loads and stores"); warning (OPT_Wdeprecated, "vec_lvsr is deprecated for little endian; use \ assignment for unaligned loads and stores"); + + if (fcode == ALTIVEC_BUILTIN_VEC_CMPNE) + { + /* vec_cmpne needs to be special cased because there are no instructions + for it (prior to power 9). */ + if (nargs != 2) + { + error ("vec_cmpne only accepts 2 arguments"); + return error_mark_node; + } + + tree arg0 = (*arglist)[0]; + tree arg0_type = TREE_TYPE (arg0); + tree arg1 = (*arglist)[1]; + tree arg1_type = TREE_TYPE (arg1); + + /* Both arguments must be vectors and the types must match. */ + if (arg0_type != arg1_type) + goto bad; + if (TREE_CODE (arg0_type) != VECTOR_TYPE) + goto bad; + + switch (TYPE_MODE (TREE_TYPE (arg0_type))) + { + /* vec_cmpneq (va, vb) == vec_nor (vec_cmpeq (va, vb), + vec_cmpeq (va, vb)). */ + /* Note: vec_nand also works but opt changes vec_nand's to vec_nor's + anyway. */ + case QImode: + case HImode: + case SImode: + case DImode: + case TImode: + case SFmode: + case DFmode: + { + /* call = vec_cmpeq (va, vb) + result = vec_nor (call, call). */ + vec<tree, va_gc> *params = make_tree_vector (); + vec_safe_push (params, arg0); + vec_safe_push (params, arg1); + tree call = altivec_resolve_overloaded_builtin + (loc, rs6000_builtin_decls[ALTIVEC_BUILTIN_VEC_CMPEQ], params); + /* Use save_expr to ensure that operands used more than once + that may have side effects (like calls) are only evaluated + once. */ + call = save_expr (call); + params = make_tree_vector (); + vec_safe_push (params, call); + vec_safe_push (params, call); + return altivec_resolve_overloaded_builtin + (loc, rs6000_builtin_decls[ALTIVEC_BUILTIN_VEC_NOR], params); + } + /* Other types are errors. */ + default: + goto bad; + } + } + if (fcode == ALTIVEC_BUILTIN_VEC_ADDE) { /* vec_adde needs to be special cased because there is no instruction |