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Add Lowlevel::Not

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Ahmad Sattar 2023-02-16 22:45:56 +01:00
parent 214ee6ed8e
commit 3c01ae10c6
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3 changed files with 39 additions and 0 deletions
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17
crates/compiler/gen_dev/src/generic64/mod.rs
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@ -1164,6 +1164,23 @@ impl<
}
}
fn build_not(&mut self, dst: &Symbol, src: &Symbol, arg_layout: &InLayout<'a>) {
match *arg_layout {
Layout::BOOL => {
let dst_reg = self.storage_manager.claim_general_reg(&mut self.buf, dst);
let src_reg = self.storage_manager.load_to_general_reg(&mut self.buf, src);
// Not would usually be implemented as `xor src, -1` followed by `and src, 1`
// but since our booleans are represented as `0x101010101010101` currently, we can simply XOR with that
let bool_val = [true as u8; 8];
ASM::mov_reg64_imm64(&mut self.buf, dst_reg, i64::from_ne_bytes(bool_val));
ASM::xor_reg64_reg64_reg64(&mut self.buf, src_reg, src_reg, dst_reg);
ASM::mov_reg64_reg64(&mut self.buf, dst_reg, src_reg);
}
x => todo!("Not: layout, {:?}", x),
}
}
fn build_num_lt(
&mut self,
dst: &Symbol,