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riscv64+sparc64: alloc new mcv in bitcast if cannot reuse operand

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This commit is contained in:
Jakub Konka 2023-02-20 12:19:40 +01:00
parent 528c43233f
commit 0aee40bd13
2 changed files with 29 additions and 2 deletions
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15
src/arch/riscv64/CodeGen.zig
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@ -2338,7 +2338,20 @@ fn airPtrToInt(self: *Self, inst: Air.Inst.Index) !void {
fn airBitCast(self: *Self, inst: Air.Inst.Index) !void {
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const result = try self.resolveInst(ty_op.operand);
const result = if (self.liveness.isUnused(inst)) .dead else result: {
const operand = try self.resolveInst(ty_op.operand);
if (self.reuseOperand(inst, ty_op.operand, 0, operand)) break :result operand;
const operand_lock = switch (operand) {
.register => |reg| self.register_manager.lockReg(reg),
else => null,
};
defer if (operand_lock) |lock| self.register_manager.unlockReg(lock);
const dest = try self.allocRegOrMem(inst, true);
try self.setRegOrMem(self.air.typeOfIndex(inst), dest, operand);
break :result dest;
};
return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
}

16
src/arch/sparc64/CodeGen.zig
View File

@ -1091,7 +1091,21 @@ fn airPtrArithmetic(self: *Self, inst: Air.Inst.Index, tag: Air.Inst.Tag) !void
fn airBitCast(self: *Self, inst: Air.Inst.Index) !void {
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const result = try self.resolveInst(ty_op.operand);
const result = if (self.liveness.isUnused(inst)) .dead else result: {
const operand = try self.resolveInst(ty_op.operand);
if (self.reuseOperand(inst, ty_op.operand, 0, operand)) break :result operand;
const operand_lock = switch (operand) {
.register => |reg| self.register_manager.lockReg(reg),
.register_with_overflow => |rwo| self.register_manager.lockReg(rwo.reg),
else => null,
};
defer if (operand_lock) |lock| self.register_manager.unlockReg(lock);
const dest = try self.allocRegOrMem(inst, true);
try self.setRegOrMem(self.air.typeOfIndex(inst), dest, operand);
break :result dest;
};
return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
}