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x86_64: implement some slice ops

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This commit is contained in:
Jacob Young 2023-03-19 09:43:07 -04:00 committed by Jakub Konka
parent 958c8e1ce9
commit 6c453dd806
1 changed files with 54 additions and 14 deletions
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68
src/arch/x86_64/CodeGen.zig
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@ -2089,9 +2089,12 @@ fn airUnwrapErrUnionPayloadPtr(self: *Self, inst: Air.Inst.Index) !void {
defer self.register_manager.unlockReg(src_lock);
const dst_ty = self.air.typeOfIndex(inst);
const dst_reg = try self.register_manager.allocReg(inst, gp);
const dst_lock = self.register_manager.lockRegAssumeUnused(dst_reg);
defer self.register_manager.unlockReg(dst_lock);
const dst_reg = if (self.reuseOperand(inst, ty_op.operand, 0, src_mcv))
src_reg
else
try self.register_manager.allocReg(inst, gp);
const dst_lock = self.register_manager.lockReg(dst_reg);
defer if (dst_lock) |lock| self.register_manager.unlockReg(lock);
const eu_ty = src_ty.childType();
const pl_ty = eu_ty.errorUnionPayload();
@ -2133,9 +2136,12 @@ fn airErrUnionPayloadPtrSet(self: *Self, inst: Air.Inst.Index) !void {
if (self.liveness.isUnused(inst)) break :result .dead;
const dst_ty = self.air.typeOfIndex(inst);
const dst_reg = try self.register_manager.allocReg(inst, gp);
const dst_lock = self.register_manager.lockRegAssumeUnused(dst_reg);
defer self.register_manager.unlockReg(dst_lock);
const dst_reg = if (self.reuseOperand(inst, ty_op.operand, 0, src_mcv))
src_reg
else
try self.register_manager.allocReg(inst, gp);
const dst_lock = self.register_manager.lockReg(dst_reg);
defer if (dst_lock) |lock| self.register_manager.unlockReg(lock);
const pl_off = @intCast(i32, errUnionErrorOffset(pl_ty, self.target.*));
const dst_abi_size = @intCast(u32, dst_ty.abiSize(self.target.*));
@ -2309,19 +2315,53 @@ fn airSliceLen(self: *Self, inst: Air.Inst.Index) !void {
fn airPtrSliceLenPtr(self: *Self, inst: Air.Inst.Index) !void {
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const result: MCValue = if (self.liveness.isUnused(inst))
.dead
else
return self.fail("TODO implement ptr_slice_len_ptr for {}", .{self.target.cpu.arch});
const result: MCValue = result: {
if (self.liveness.isUnused(inst)) break :result .dead;
const src_ty = self.air.typeOf(ty_op.operand);
const src_mcv = try self.resolveInst(ty_op.operand);
const src_reg = switch (src_mcv) {
.register => |reg| reg,
else => try self.copyToTmpRegister(src_ty, src_mcv),
};
const src_lock = self.register_manager.lockRegAssumeUnused(src_reg);
defer self.register_manager.unlockReg(src_lock);
const dst_ty = self.air.typeOfIndex(inst);
const dst_reg = if (self.reuseOperand(inst, ty_op.operand, 0, src_mcv))
src_reg
else
try self.register_manager.allocReg(inst, gp);
const dst_lock = self.register_manager.lockReg(dst_reg);
defer if (dst_lock) |lock| self.register_manager.unlockReg(lock);
const dst_abi_size = @intCast(u32, dst_ty.abiSize(self.target.*));
try self.asmRegisterMemory(
.lea,
registerAlias(dst_reg, dst_abi_size),
Memory.sib(.qword, .{
.base = src_reg,
.disp = @divExact(self.target.cpu.arch.ptrBitWidth(), 8),
}),
);
break :result .{ .register = dst_reg };
};
return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
}
fn airPtrSlicePtrPtr(self: *Self, inst: Air.Inst.Index) !void {
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const result: MCValue = if (self.liveness.isUnused(inst))
.dead
else
return self.fail("TODO implement ptr_slice_ptr_ptr for {}", .{self.target.cpu.arch});
const result: MCValue = result: {
if (self.liveness.isUnused(inst)) break :result .dead;
const dst_ty = self.air.typeOfIndex(inst);
const opt_mcv = try self.resolveInst(ty_op.operand);
break :result if (self.reuseOperand(inst, ty_op.operand, 0, opt_mcv))
opt_mcv
else
try self.copyToRegisterWithInstTracking(inst, dst_ty, opt_mcv);
};
return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
}