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stage2: sparc64: Update BigTomb implementation to use Liveness

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Change BigTomb implementation to call to Liveness' implementation
rather than implementing feed() in itself.
This is modelled after the AArch64 backend.
This commit is contained in:
Koakuma
2022-06-19 21:35:17 +07:00
parent e2cb25358e
commit dd57729299
1 changed files with 5 additions and 21 deletions
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26
src/arch/sparc64/CodeGen.zig
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@@ -236,26 +236,12 @@ const CallMCValues = struct {
const BigTomb = struct {
function: *Self,
inst: Air.Inst.Index,
tomb_bits: Liveness.Bpi,
big_tomb_bits: u32,
bit_index: usize,
lbt: Liveness.BigTomb,
fn feed(bt: *BigTomb, op_ref: Air.Inst.Ref) void {
const this_bit_index = bt.bit_index;
bt.bit_index += 1;
const op_int = @enumToInt(op_ref);
if (op_int < Air.Inst.Ref.typed_value_map.len) return;
const op_index = @intCast(Air.Inst.Index, op_int - Air.Inst.Ref.typed_value_map.len);
if (this_bit_index < Liveness.bpi - 1) {
const dies = @truncate(u1, bt.tomb_bits >> @intCast(Liveness.OperandInt, this_bit_index)) != 0;
if (!dies) return;
} else {
const big_bit_index = @intCast(u5, this_bit_index - (Liveness.bpi - 1));
const dies = @truncate(u1, bt.big_tomb_bits >> big_bit_index) != 0;
if (!dies) return;
}
const dies = bt.lbt.feed();
const op_index = Air.refToIndex(op_ref) orelse return;
if (!dies) return;
bt.function.processDeath(op_index);
}
@@ -3360,9 +3346,7 @@ fn iterateBigTomb(self: *Self, inst: Air.Inst.Index, operand_count: usize) !BigT
return BigTomb{
.function = self,
.inst = inst,
.tomb_bits = self.liveness.getTombBits(inst),
.big_tomb_bits = self.liveness.special.get(inst) orelse 0,
.bit_index = 0,
.lbt = self.liveness.iterateBigTomb(inst),
};
}