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soa_zip (-llvm-api only): creates an #soa[]struct from passed slices

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x := []i32{1, 3, 9};
y := []f32{2, 4, 16};
z := []b32{true, false, true};

s_anonymous := soa_zip(x, y, z);
assert(s_anonymous[0]._1 == 2);

s_named := soa_zip(a=x, b=y, c=z);
assert(s_anonymous[0].b == 2);
This commit is contained in:
gingerBill
2021-03-24 17:33:05 +00:00
parent 7a045bd957
commit 989a03dc77
3 changed files with 149 additions and 2 deletions
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src/llvm_backend.cpp
+31
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@@ -8250,8 +8250,36 @@ lbValue lb_soa_struct_cap(lbProcedure *p, lbValue value) {
return lb_emit_struct_ev(p, value, cast(i32)n);
}
lbValue lb_soa_zip(lbProcedure *p, AstCallExpr *ce, TypeAndValue const &tv) {
GB_ASSERT(ce->args.count > 0);
auto slices = slice_make<lbValue>(temporary_allocator(), ce->args.count);
for_array(i, slices) {
Ast *arg = ce->args[i];
if (arg->kind == Ast_FieldValue) {
arg = arg->FieldValue.value;
}
slices[i] = lb_build_expr(p, arg);
}
lbValue len = lb_slice_len(p, slices[0]);
for (isize i = 1; i < slices.count; i++) {
lbValue other_len = lb_slice_len(p, slices[i]);
len = lb_emit_min(p, t_int, len, other_len);
}
GB_ASSERT(is_type_soa_struct(tv.type));
lbAddr res = lb_add_local_generated(p, tv.type, true);
for_array(i, slices) {
lbValue src = lb_slice_elem(p, slices[i]);
lbValue dst = lb_emit_struct_ep(p, res.addr, cast(i32)i);
lb_emit_store(p, dst, src);
}
lbValue len_dst = lb_emit_struct_ep(p, res.addr, cast(i32)slices.count);
lb_emit_store(p, len_dst, len);
return lb_addr_load(p, res);
}
lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv, BuiltinProcId id) {
ast_node(ce, CallExpr, expr);
@@ -8642,6 +8670,9 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
lb_build_expr(p, ce->args[2]));
case BuiltinProc_soa_zip:
return lb_soa_zip(p, ce, tv);
// "Intrinsics"