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riscv: implement airArrayToSlice

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David Rubin 2024-05-26 14:01:32 -07:00
parent a270c6f8c8
commit a9ef016943
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1 changed files with 18 additions and 3 deletions
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21
src/arch/riscv64/CodeGen.zig
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@ -5880,10 +5880,25 @@ fn airBitCast(func: *Func, inst: Air.Inst.Index) !void {
}
fn airArrayToSlice(func: *Func, inst: Air.Inst.Index) !void {
const zcu = func.bin_file.comp.module.?;
const ty_op = func.air.instructions.items(.data)[@intFromEnum(inst)].ty_op;
const result: MCValue = if (func.liveness.isUnused(inst)) .unreach else return func.fail("TODO implement airArrayToSlice for {}", .{
func.target.cpu.arch,
});
const slice_ty = func.typeOfIndex(inst);
const ptr_ty = func.typeOf(ty_op.operand);
const ptr = try func.resolveInst(ty_op.operand);
const array_ty = ptr_ty.childType(zcu);
const array_len = array_ty.arrayLen(zcu);
const frame_index = try func.allocFrameIndex(FrameAlloc.initSpill(slice_ty, zcu));
try func.genSetMem(.{ .frame = frame_index }, 0, ptr_ty, ptr);
try func.genSetMem(
.{ .frame = frame_index },
@intCast(ptr_ty.abiSize(zcu)),
Type.usize,
.{ .immediate = array_len },
);
const result = MCValue{ .load_frame = .{ .index = frame_index } };
return func.finishAir(inst, result, .{ ty_op.operand, .none, .none });
}