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x64: Implement ineg and bnot

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This commit is contained in:
bjorn3
2020-08-22 10:41:29 +02:00
committed by Benjamin Bouvier
parent f1fdd5764a
commit 74642b166f
5 changed files with 166 additions and 25 deletions
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28
cranelift/codegen/src/isa/x64/inst/emit.rs
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@@ -628,6 +628,34 @@ pub(crate) fn emit(
}
}
Inst::Not { size, src } => {
let (opcode, prefix, rex_flags) = match size {
1 => (0xF6, LegacyPrefixes::None, RexFlags::clear_w()),
2 => (0xF7, LegacyPrefixes::_66, RexFlags::clear_w()),
4 => (0xF7, LegacyPrefixes::None, RexFlags::clear_w()),
8 => (0xF7, LegacyPrefixes::None, RexFlags::set_w()),
_ => unreachable!("{}", size),
};
let subopcode = 2;
let src = int_reg_enc(src.to_reg());
emit_std_enc_enc(sink, prefix, opcode, 1, subopcode, src, rex_flags)
}
Inst::Neg { size, src } => {
let (opcode, prefix, rex_flags) = match size {
1 => (0xF6, LegacyPrefixes::None, RexFlags::clear_w()),
2 => (0xF7, LegacyPrefixes::_66, RexFlags::clear_w()),
4 => (0xF7, LegacyPrefixes::None, RexFlags::clear_w()),
8 => (0xF7, LegacyPrefixes::None, RexFlags::set_w()),
_ => unreachable!("{}", size),
};
let subopcode = 3;
let src = int_reg_enc(src.to_reg());
emit_std_enc_enc(sink, prefix, opcode, 1, subopcode, src, rex_flags)
}
Inst::Div {
size,
signed,