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centralize stack movement

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Folkert 2023-02-11 16:49:02 +01:00
parent 8ec3ab0963
commit 6a84d6ee83
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6 changed files with 160 additions and 17 deletions
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107
crates/compiler/gen_dev/src/generic64/storage.rs
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@ -739,16 +739,55 @@ impl<
layout: &InLayout<'a>,
) {
match layout_interner.get(*layout) {
Layout::Builtin(Builtin::Int(IntWidth::I64 | IntWidth::U64)) => {
debug_assert_eq!(to_offset % 8, 0);
let reg = self.load_to_general_reg(buf, sym);
ASM::mov_base32_reg64(buf, to_offset, reg);
}
Layout::Builtin(Builtin::Float(FloatWidth::F64)) => {
debug_assert_eq!(to_offset % 8, 0);
let reg = self.load_to_float_reg(buf, sym);
ASM::mov_base32_freg64(buf, to_offset, reg);
}
Layout::Builtin(builtin) => match builtin {
Builtin::Int(int_width) => match int_width {
IntWidth::I128 | IntWidth::U128 => {
// can we treat this as 2 u64's?
todo!()
}
IntWidth::I64 | IntWidth::U64 => {
debug_assert_eq!(to_offset % 8, 0);
let reg = self.load_to_general_reg(buf, sym);
ASM::mov_base32_reg64(buf, to_offset, reg);
}
IntWidth::I32 | IntWidth::U32 => {
debug_assert_eq!(to_offset % 4, 0);
let reg = self.load_to_general_reg(buf, sym);
ASM::mov_base32_reg32(buf, to_offset, reg);
}
IntWidth::I16 | IntWidth::U16 => {
debug_assert_eq!(to_offset % 2, 0);
let reg = self.load_to_general_reg(buf, sym);
ASM::mov_base32_reg16(buf, to_offset, reg);
}
IntWidth::I8 | IntWidth::U8 => {
let reg = self.load_to_general_reg(buf, sym);
ASM::mov_base32_reg8(buf, to_offset, reg);
}
},
Builtin::Float(float_width) => match float_width {
FloatWidth::F64 => {
debug_assert_eq!(to_offset % 8, 0);
let reg = self.load_to_float_reg(buf, sym);
ASM::mov_base32_freg64(buf, to_offset, reg);
}
FloatWidth::F32 => todo!(),
},
Builtin::Bool => {
// same as 8-bit integer
let reg = self.load_to_general_reg(buf, sym);
ASM::mov_base32_reg8(buf, to_offset, reg);
}
Builtin::Decimal => todo!(),
Builtin::Str | Builtin::List(_) => {
let (from_offset, size) = self.stack_offset_and_size(sym);
debug_assert!(from_offset % 8 == 0);
debug_assert!(size % 8 == 0);
debug_assert_eq!(size, layout_interner.stack_size(*layout));
self.copy_symbol_to_stack_offset_help(buf, size, from_offset, to_offset)
}
},
_ if layout_interner.stack_size(*layout) == 0 => {}
// TODO: Verify this is always true.
// The dev backend does not deal with refcounting and does not care about if data is safe to memcpy.
@ -759,17 +798,53 @@ impl<
debug_assert!(from_offset % 8 == 0);
debug_assert!(size % 8 == 0);
debug_assert_eq!(size, layout_interner.stack_size(*layout));
self.with_tmp_general_reg(buf, |_storage_manager, buf, reg| {
for i in (0..size as i32).step_by(8) {
ASM::mov_reg64_base32(buf, reg, from_offset + i);
ASM::mov_base32_reg64(buf, to_offset + i, reg);
}
});
self.copy_symbol_to_stack_offset_help(buf, size, from_offset, to_offset)
}
x => todo!("copying data to the stack with layout, {:?}", x),
}
}
pub fn copy_symbol_to_stack_offset_help(
&mut self,
buf: &mut Vec<'a, u8>,
size: u32,
from_offset: i32,
to_offset: i32,
) {
let mut copied = 0;
let size = size as i32;
self.with_tmp_general_reg(buf, |_storage_manager, buf, reg| {
for _ in (0..(size - copied)).step_by(8) {
ASM::mov_reg64_base32(buf, reg, from_offset + copied);
ASM::mov_base32_reg64(buf, to_offset + copied, reg);
copied += 8;
}
for _ in (0..(size - copied)).step_by(4) {
ASM::mov_reg32_base32(buf, reg, from_offset + copied);
ASM::mov_base32_reg32(buf, to_offset + copied, reg);
copied += 4;
}
for _ in (0..(size - copied)).step_by(2) {
ASM::mov_reg16_base32(buf, reg, from_offset + copied);
ASM::mov_base32_reg16(buf, to_offset + copied, reg);
copied += 2;
}
for _ in (0..(size - copied)).step_by(1) {
ASM::mov_reg8_base32(buf, reg, from_offset + copied);
ASM::mov_base32_reg8(buf, to_offset + copied, reg);
copied += 1;
}
});
}
#[allow(dead_code)]
/// Ensures that a register is free. If it is not free, data will be moved to make it free.
pub fn ensure_reg_free(