diff options
Diffstat (limited to 'ia32/PrintAsm.ml')
| -rw-r--r-- | ia32/PrintAsm.ml | 28 |
1 files changed, 5 insertions, 23 deletions
diff --git a/ia32/PrintAsm.ml b/ia32/PrintAsm.ml index c2ea98f..0878371 100644 --- a/ia32/PrintAsm.ml +++ b/ia32/PrintAsm.ml @@ -390,33 +390,15 @@ let print_builtin_vstore_global oc chunk id ofs args = let print_builtin_inline oc name args res = fprintf oc "%s begin builtin %s\n" comment name; begin match name, args, res with - (* Memory accesses *) - | "__builtin_read16_reversed", [IR a1], [IR res] -> - let tmp = if Asmgen.low_ireg res then res else ECX in - fprintf oc " movzwl 0(%a), %a\n" ireg a1 ireg tmp; - fprintf oc " xchg %a, %a\n" ireg8 tmp high_ireg8 tmp; - if tmp <> res then - fprintf oc " movl %a, %a\n" ireg tmp ireg res - | "__builtin_read32_reversed", [IR a1], [IR res] -> - fprintf oc " movl 0(%a), %a\n" ireg a1 ireg res; - fprintf oc " bswap %a\n" ireg res - | "__builtin_write16_reversed", [IR a1; IR a2], _ -> - let tmp = if a1 = ECX then EDX else ECX in - if a2 <> tmp then - fprintf oc " movl %a, %a\n" ireg a2 ireg tmp; - fprintf oc " xchg %a, %a\n" ireg8 tmp high_ireg8 tmp; - fprintf oc " movw %a, 0(%a)\n" ireg16 tmp ireg a1 - | "__builtin_write32_reversed", [IR a1; IR a2], _ -> - let tmp = if a1 = ECX then EDX else ECX in - if a2 <> tmp then - fprintf oc " movl %a, %a\n" ireg a2 ireg tmp; - fprintf oc " bswap %a\n" ireg tmp; - fprintf oc " movl %a, 0(%a)\n" ireg tmp ireg a1 (* Integer arithmetic *) - | "__builtin_bswap", [IR a1], [IR res] -> + | ("__builtin_bswap"| "__builtin_bswap32"), [IR a1], [IR res] -> if a1 <> res then fprintf oc " movl %a, %a\n" ireg a1 ireg res; fprintf oc " bswap %a\n" ireg res + | "__builtin_bswap16", [IR a1], [IR res] -> + if a1 <> res then + fprintf oc " movl %a, %a\n" ireg a1 ireg res; + fprintf oc " rolw $8, %a\n" ireg16 res (* Float arithmetic *) | "__builtin_fabs", [FR a1], [FR res] -> need_masks := true; |