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free or reuse unconditionally when value is unique

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Folkert 2023-06-27 17:33:53 +02:00
parent e3ab023f62
commit fc3004da58
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21 changed files with 381 additions and 69 deletions
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17
crates/compiler/gen_dev/src/generic64/mod.rs
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@ -2996,12 +2996,17 @@ impl<
);
}
fn build_ptr_to_stack_value(
&mut self,
sym: Symbol,
value: Symbol,
element_layout: InLayout<'a>,
) {
fn build_ptr_clear_tag_id(&mut self, sym: Symbol, ptr: Symbol) {
let buf = &mut self.buf;
let ptr_reg = self.storage_manager.load_to_general_reg(buf, &ptr);
let sym_reg = self.storage_manager.claim_general_reg(buf, &sym);
ASM::mov_reg64_imm64(buf, sym_reg, !0b111);
ASM::and_reg64_reg64_reg64(buf, sym_reg, sym_reg, ptr_reg);
}
fn build_alloca(&mut self, sym: Symbol, value: Symbol, element_layout: InLayout<'a>) {
// 1. acquire some stack space
let element_width = self.interner().stack_size(element_layout);
let allocation = self.debug_symbol("stack_allocation");