diff options
Diffstat (limited to 'ia32/PrintAsm.ml')
| -rw-r--r-- | ia32/PrintAsm.ml | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/ia32/PrintAsm.ml b/ia32/PrintAsm.ml index 56e837d..8828faa 100644 --- a/ia32/PrintAsm.ml +++ b/ia32/PrintAsm.ml @@ -448,6 +448,11 @@ let print_builtin_inline oc name args res = if a1 <> res then fprintf oc " movl %a, %a\n" ireg a1 ireg res; fprintf oc " rolw $8, %a\n" ireg16 res + | "__builtin_clz", [IR a1], [IR res] -> + fprintf oc " bsrl %a, %a\n" ireg a1 ireg res; + fprintf oc " xorl $31, %a\n" ireg res + | "__builtin_ctz", [IR a1], [IR res] -> + fprintf oc " bsfl %a, %a\n" ireg a1 ireg res (* Float arithmetic *) | "__builtin_fabs", [FR a1], [FR res] -> need_masks := true; |