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change regs_allocated to PRegSet

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This commit is contained in:
T0b1
2023-04-14 19:33:54 +02:00
parent e2061d2e04
commit 2c8b9a680f
1 changed files with 10 additions and 11 deletions
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21
src/ion/fast_alloc.rs
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@@ -457,7 +457,7 @@ fn allocate_block_insts<'a, F: Function>(
// keep track of which pregs where allocated so we can clear them later on
// TODO: wouldnt need this if we look up the inst a vreg was allocated at
let mut regs_allocated: SmallVec<[PReg; 8]> = smallvec![];
let mut regs_allocated = PRegSet::empty();
// keep track of which pregs hold late uses/early writes and so are unelligible
// as destinations for late writes
@@ -493,7 +493,7 @@ fn allocate_block_insts<'a, F: Function>(
match op.constraint() {
OperandConstraint::FixedReg(reg) => {
state.clear_preg(reg);
regs_allocated.push(reg);
regs_allocated.add(reg);
state.allocs[alloc_idx + i] = Allocation::reg(reg);
trace!("Chose {} for operand {}", reg, i);
late_write_disallow_regs.add(reg);
@@ -538,7 +538,7 @@ fn allocate_block_insts<'a, F: Function>(
// late uses cannot share a register with late defs
late_write_disallow_regs.add(reg);
}
regs_allocated.push(reg);
regs_allocated.add(reg);
trace!("Chose {} for operand {}", reg, i);
}
OperandKind::Def => {
@@ -610,13 +610,12 @@ fn allocate_block_insts<'a, F: Function>(
state.clear_preg(reg);
}
state.assign_preg(tmp_reg, vreg);
println!("1");
state.move_to_stack(tmp_reg, vreg, ProgPoint::after(inst));
regs_allocated.push(tmp_reg);
regs_allocated.add(tmp_reg);
} else {
state.alloc_stack_slot(vreg);
state.move_to_stack(reg, vreg, ProgPoint::after(inst));
regs_allocated.push(reg);
regs_allocated.add(reg);
}
trace!("Chose {} for operand {}", reg, i);
}
@@ -666,7 +665,7 @@ fn allocate_block_insts<'a, F: Function>(
let reg_order = const_state.reg_order(op.class());
let mut allocated = false;
for &reg in reg_order {
if regs_allocated.contains(&reg) {
if regs_allocated.contains(reg) {
continue;
}
@@ -674,7 +673,7 @@ fn allocate_block_insts<'a, F: Function>(
debug_assert!(state.pregs[reg.index()].vreg.is_none());
state.allocs[alloc_idx + i] = Allocation::reg(reg);
regs_allocated.push(reg);
regs_allocated.add(reg);
if op.kind() == OperandKind::Use {
if req_refs_on_stack && state.vregs[vreg.vreg()].reftype {
panic!("reftype required to be in reg at safepoint");
@@ -731,12 +730,12 @@ fn allocate_block_insts<'a, F: Function>(
let reg_order = const_state.reg_order(op.class());
let mut allocated = false;
for &reg in reg_order {
if regs_allocated.contains(&reg) || late_write_disallow_regs.contains(reg) {
if regs_allocated.contains(reg) || late_write_disallow_regs.contains(reg) {
continue;
}
// reg should not contain anything
regs_allocated.push(reg);
regs_allocated.add(reg);
state.allocs[alloc_idx + i] = Allocation::reg(reg);
state.clear_preg(reg);
@@ -760,7 +759,7 @@ fn allocate_block_insts<'a, F: Function>(
OperandConstraint::Reuse(idx) => {
debug_assert!(state.allocs[alloc_idx + idx].is_reg());
let preg = state.allocs[alloc_idx + idx].as_reg().unwrap();
debug_assert!(regs_allocated.contains(&preg));
debug_assert!(regs_allocated.contains(preg));
state.allocs[alloc_idx + i] = Allocation::reg(preg);
state.clear_preg(preg);