Hojun-Cho
5d100dbd42
728 -> test/asm/matchdispatch_test.ww. The distinct-CMPQ-tag collection window over TEXT b.next preserved on both stages. Strengthened: per-row byte-id legs added -- the C header claimed a cmp -s its code never ran; all three rows verify green.
197 lines
6.2 KiB
Plaintext
197 lines
6.2 KiB
Plaintext
package matchdispatch_test;
|
|
|
|
// Direct-w6c asm-window gate over match tag dispatch under
|
|
// cross-module fn-name shadowing. Port of the retired native carrier
|
|
// test/wcc/728_match_4arm_cross_module.c (#31); every assertion
|
|
// preserved. The mod-disambiguated match-scrutinee claim has no other
|
|
// owner: pre-fix wwstage's name-only fnretlookup collapsed arms 2/3
|
|
// of a `match (a.next())` inside a shadowing `b.next` to CMPQ $0,
|
|
// leaving their case bodies silently unreachable.
|
|
//
|
|
// Per row: every `CMPQ $K, AX` inside [TEXT b.next .. next TEXT) is
|
|
// collected; at least `arms` must exist and the first `arms` values
|
|
// must be pairwise distinct and inside [0, arms). Checked on both
|
|
// stages.
|
|
//
|
|
// Strengthened: a per-row byte-id leg (testenv.same over both .s).
|
|
// The C header claimed a cmp -s that its code never ran; the leg
|
|
// verifies green on all three rows.
|
|
//
|
|
// Dropped C machinery, not assertions: the w6c_ww-absent skip gate,
|
|
// getpid()-keyed /tmp names, slurp caps.
|
|
|
|
import os;
|
|
import os.exec;
|
|
import strings;
|
|
import testenv;
|
|
import time;
|
|
|
|
fn fail(label: str, why: str) void = {
|
|
let m: str = strings.concat("matchdispatch FAIL: ", label, " -- ",
|
|
why, "\n");
|
|
os.write(2, m.ptr, m.len: u64);
|
|
assert(false);
|
|
};
|
|
|
|
fn tmo() time.duration = {
|
|
return (180i64 * (time.second: i64)): time.duration;
|
|
};
|
|
|
|
fn emitstage(td: str, label: str, stage: str, drv: str,
|
|
outname: str) void = {
|
|
let av: []str = [];
|
|
append(av, drv);
|
|
append(av, "-o");
|
|
append(av, outname);
|
|
append(av, "src.ww");
|
|
let co: testenv.commandout;
|
|
testenv.runcommand(td, td, stage, av, tmo(), &co);
|
|
let ok: bool = co.termination == exec.termination.EXIT && co.code == 0;
|
|
if (!ok) { fail(label, strings.concat(stage, " compile failed")); };
|
|
};
|
|
|
|
fn posafter(s: str, start: i32, needle: str) i32 = {
|
|
let p: i32 = testenv.pos(strings.sub(s, start, s.len), needle);
|
|
if (p < 0) { return -1; };
|
|
return start + p;
|
|
};
|
|
|
|
// Collect every `CMPQ $K, AX` tag inside [TEXT b.next .. next TEXT)
|
|
// (the C capped collection at 16 entries and K < 16), then assert
|
|
// count, range and pairwise distinctness over the first `arms`.
|
|
fn cmpqcheck(label: str, stage: str, s: str, arms: i32) void = {
|
|
let fnhdr: str = "TEXT b.next";
|
|
let fp: i32 = testenv.pos(s, fnhdr);
|
|
if (fp < 0) {
|
|
fail(label, strings.concat(stage, ": no ", fnhdr, " in .s"));
|
|
};
|
|
let ep: i32 = posafter(s, fp + fnhdr.len, "\nTEXT ");
|
|
if (ep < 0) { ep = s.len; };
|
|
let w: str = strings.sub(s, fp, ep);
|
|
let seen: []i32 = alloc([], 16u64)!;
|
|
let p: i32 = 0;
|
|
for (p < w.len) {
|
|
let m: i32 = posafter(w, p, "CMPQ\t$");
|
|
if (m < 0) { break; };
|
|
let d: i32 = m + 6;
|
|
let k: i32 = 0;
|
|
let nd: i32 = 0;
|
|
for (d < w.len) {
|
|
let c: u8 = w[d];
|
|
if (c < '0' || c > '9') { break; };
|
|
k = k * 10 + ((c - '0'): i32);
|
|
nd += 1;
|
|
d += 1;
|
|
};
|
|
if (nd > 0 && d + 4 <= w.len
|
|
&& testenv.same(strings.sub(w, d, d + 4), ", AX")) {
|
|
if (seen.len < 16 && k < 16) { append(seen, k); };
|
|
};
|
|
p = m + 1;
|
|
};
|
|
if (seen.len < arms) {
|
|
fail(label, strings.concat(stage,
|
|
": too few `CMPQ $K, AX` in b.next body"));
|
|
};
|
|
let i: i32 = 0;
|
|
for (i < arms) {
|
|
if (seen[i] < 0 || seen[i] >= arms) {
|
|
fail(label, strings.concat(stage,
|
|
": arm tag out of [0, arms)"));
|
|
};
|
|
let j: i32 = 0;
|
|
for (j < i) {
|
|
if (seen[j] == seen[i]) {
|
|
fail(label, strings.concat(stage,
|
|
": repeated arm tag (collapse)"));
|
|
};
|
|
j += 1;
|
|
};
|
|
i += 1;
|
|
};
|
|
};
|
|
|
|
fn cmpqrow(label: str, src: str, arms: i32) void = {
|
|
let td: str = testenv.fresh();
|
|
testenv.writefile(strings.concat(td, "/src.ww"), src);
|
|
emitstage(td, label, "cstage", testenv.driver("w6c"), "cs.s");
|
|
emitstage(td, label, "wwstage", testenv.driver("w6c_ww"), "ws.s");
|
|
let cs: str = testenv.readfile(strings.concat(td, "/cs.s"));
|
|
let ws: str = testenv.readfile(strings.concat(td, "/ws.s"));
|
|
cmpqcheck(label, "cstage", cs, arms);
|
|
cmpqcheck(label, "wwstage", ws, arms);
|
|
if (!testenv.same(cs, ws)) {
|
|
fail(label, "cstage vs wwstage asm differs");
|
|
};
|
|
testenv.clean(td);
|
|
};
|
|
|
|
// Callee `a.next` returns the wide tagged; caller `b.next` shadows
|
|
// the leaf with a 2-arm subset return so a name-only lookup sees the
|
|
// wrong scrutinee type. The reverse row pins that dispatch follows
|
|
// variantindex, not source order; the 3-arm row pins the boundary
|
|
// (collapse begins at arms >= the caller's variant count).
|
|
@test fn match4armcrossmodule() void = {
|
|
cmpqrow("4arm_shadowed_callee", strings.concat(
|
|
"package a;\n",
|
|
"export type more = void;\n",
|
|
"export type invalid = !void;\n",
|
|
"export type done = void;\n",
|
|
"export fn next() (rune | done | more | invalid) = {\n",
|
|
" let r: rune;\n",
|
|
" return r;\n",
|
|
"};\n",
|
|
"package b;\n",
|
|
"import a;\n",
|
|
"type done = void;\n",
|
|
"fn next() (rune | done) = {\n",
|
|
" match (a.next()) {\n",
|
|
" case let r: rune => return r;\n",
|
|
" case let dn: a.done => { let v: done; return v; };\n",
|
|
" case let m: a.more => { abort(\"i\"); };\n",
|
|
" case let e: a.invalid => { abort(\"i\"); };\n",
|
|
" };\n",
|
|
"};\n",
|
|
"export fn main() i32 = { return 0; };\n"), 4);
|
|
cmpqrow("4arm_shadowed_reverse", strings.concat(
|
|
"package a;\n",
|
|
"export type more = void;\n",
|
|
"export type invalid = !void;\n",
|
|
"export type done = void;\n",
|
|
"export fn next() (rune | done | more | invalid) = {\n",
|
|
" let r: rune;\n",
|
|
" return r;\n",
|
|
"};\n",
|
|
"package b;\n",
|
|
"import a;\n",
|
|
"type done = void;\n",
|
|
"fn next() (rune | done) = {\n",
|
|
" match (a.next()) {\n",
|
|
" case let e: a.invalid => { abort(\"i\"); };\n",
|
|
" case let m: a.more => { abort(\"i\"); };\n",
|
|
" case let dn: a.done => { let v: done; return v; };\n",
|
|
" case let r: rune => return r;\n",
|
|
" };\n",
|
|
"};\n",
|
|
"export fn main() i32 = { return 0; };\n"), 4);
|
|
cmpqrow("3arm_shadowed_callee", strings.concat(
|
|
"package a;\n",
|
|
"export type more = void;\n",
|
|
"export type done = void;\n",
|
|
"export fn next() (rune | done | more) = {\n",
|
|
" let r: rune;\n",
|
|
" return r;\n",
|
|
"};\n",
|
|
"package b;\n",
|
|
"import a;\n",
|
|
"type done = void;\n",
|
|
"fn next() (rune | done) = {\n",
|
|
" match (a.next()) {\n",
|
|
" case let r: rune => return r;\n",
|
|
" case let dn: a.done => { let v: done; return v; };\n",
|
|
" case let m: a.more => { abort(\"i\"); };\n",
|
|
" };\n",
|
|
"};\n",
|
|
"export fn main() i32 = { return 0; };\n"), 3);
|
|
};
|