diff options
Diffstat (limited to 'ia32/Machregs.v')
| -rw-r--r-- | ia32/Machregs.v | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/ia32/Machregs.v b/ia32/Machregs.v index a2f3c3e..31ea8ee 100644 --- a/ia32/Machregs.v +++ b/ia32/Machregs.v @@ -101,6 +101,11 @@ Definition destroyed_by_cond (cond: condition): list mreg := Definition destroyed_by_jumptable: list mreg := nil. +Local Open Scope string_scope. + +Definition builtin_write16_reversed := ident_of_string "__builtin_write16_reversed". +Definition builtin_write32_reversed := ident_of_string "__builtin_write32_reversed". + Definition destroyed_by_builtin (ef: external_function): list mreg := match ef with | EF_memcpy sz al => @@ -109,6 +114,10 @@ Definition destroyed_by_builtin (ef: external_function): list mreg := | EF_vstore Mfloat32 => X7 :: nil | EF_vstore_global (Mint8unsigned|Mint8signed) _ _ => AX :: nil | EF_vstore_global Mfloat32 _ _ => X7 :: nil + | EF_builtin id sg => + if ident_eq id builtin_write16_reversed + || ident_eq id builtin_write32_reversed + then CX :: DX :: nil else nil | _ => nil end. @@ -131,8 +140,6 @@ Definition mregs_for_operation (op: operation): list (option mreg) * option mreg | _ => (nil, None) end. -Local Open Scope string_scope. - Definition builtin_negl := ident_of_string "__builtin_negl". Definition builtin_addl := ident_of_string "__builtin_addl". Definition builtin_subl := ident_of_string "__builtin_subl". |