444 lines
15 KiB
Plaintext
444 lines
15 KiB
Plaintext
package chain_test;
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// Direct-w6c asm-window gate over chained-index element dispatch.
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// Port of the retired native carriers test/wcc/739_chained_index.c,
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// 740_chained_write.c and 741_dotbase_chained.c; every assertion
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// preserved. test/lang/chainidx_test.ww owns ARRAY chains only — the
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// **T pointer-chain narrow width, the exact stride-scale pair counts
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// and the N_DOT-base recursion have no other owner; 740/741 are the
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// sole exercisers of their shapes.
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//
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// 739 (#24, read) / 740 (#27, write): inside [TEXT main.probe ..
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// first RET line) the element access must use the narrow MOV
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// mnemonic (MOVZBQ/MOVSXD load, MOVB/MOVL store), the u8 write row
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// anti-checks the pre-fix 8-byte `MOVQ AX, (BX)`, and the
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// `MOVQ $N, CX` .. `IMULQ CX, AX` scale pairs must count EXACTLY
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// inner=1 for **u8 (a stray outer scale was the pre-fix wwstage
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// emit) and inner=1 outer=1 for **i32. The pair scan is the
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// carriers' greedy two-strstr walk, ported positionally.
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//
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// 741 (#28 + #30): the N_DOT-base chained read must land MOVZBQ
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// (esz recursion through dotfieldtnode) and the tagged-array write
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// must scale by the 32B element stride; the write row's
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// scalar-overwrite divergence net is the byte-id leg, exactly the
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// carrier's design (its anti-needle machinery was never armed).
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//
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// Byte-id legs ride every row as in the C. Dropped C machinery, not
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// assertions: w6c_ww-absent skip gates, getpid()-keyed /tmp names,
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// slurp caps. The `package main;` prefix reproduces wwtest_fputs.
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import os;
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import os.exec;
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import strings;
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import testenv;
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import time;
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fn fail(label: str, why: str) void = {
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let m: str = strings.concat("chain FAIL: ", label, " -- ", why,
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"\n");
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os.write(2, m.ptr, m.len: u64);
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assert(false);
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};
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fn tmo() time.duration = {
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return (180i64 * (time.second: i64)): time.duration;
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};
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fn emitstage(td: str, label: str, stage: str, drv: str,
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outname: str) void = {
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let av: []str = [];
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append(av, drv);
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append(av, "-o");
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append(av, outname);
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append(av, "src.ww");
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let co: testenv.commandout;
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testenv.runcommand(td, td, stage, av, tmo(), &co);
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let ok: bool = co.termination == exec.termination.EXIT && co.code == 0;
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if (!ok) { fail(label, strings.concat(stage, " compile failed")); };
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};
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fn posafter(s: str, start: i32, needle: str) i32 = {
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let p: i32 = testenv.pos(strings.sub(s, start, s.len), needle);
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if (p < 0) { return -1; };
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return start + p;
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};
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// [TEXT main.probe .. first `\tRET\n`), widened to EOF when the RET
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// needle is missing — the carriers' probe window.
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fn probewindow(label: str, stage: str, s: str) str = {
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let fp: i32 = testenv.pos(s, "TEXT main.probe");
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if (fp < 0) {
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fail(label, strings.concat(stage, ": no TEXT probe in .s"));
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};
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let tail: str = strings.sub(s, fp, s.len);
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let rp: i32 = testenv.pos(tail, "\tRET\n");
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if (rp < 0) { return tail; };
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return strings.sub(tail, 0, rp);
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};
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// Greedy `movq` .. `IMULQ CX, AX` pair count (the carriers'
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// two-strstr walk: an unpaired movq re-scans from movq+1, a paired
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// one advances past its IMULQ).
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fn paircount(w: str, movq: str) i32 = {
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let n: i32 = 0;
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let p: i32 = 0;
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for (p < w.len) {
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let ip: i32 = posafter(w, p, movq);
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if (ip < 0) { break; };
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let nx: i32 = posafter(w, ip, "\tIMULQ\tCX, AX\n");
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if (nx < 0) { p = ip + 1; continue; };
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n += 1;
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p = nx + 1;
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};
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return n;
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};
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// outerscale 1 -> exactly 1 inner $8 pair and NO outer scale;
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// outerscale 4 -> 1 inner $8 pair AND 1 outer $4 pair.
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fn scalecheck(label: str, stage: str, w: str, outerscale: i32) void = {
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let inner: i32 = paircount(w, "\tMOVQ\t$8, CX\n");
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if (outerscale == 1) {
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if (inner != 1) {
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fail(label, strings.concat(stage,
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": expected exactly 1 inner `MOVQ $8, CX; IMULQ` ",
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"pair (no outer scaling for u8)"));
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};
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} else {
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let outer: i32 = paircount(w, "\tMOVQ\t$4, CX\n");
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if (inner != 1 || outer != 1) {
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fail(label, strings.concat(stage,
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": expected 1 inner `MOVQ $8` + 1 outer `MOVQ $4` ",
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"IMULQ pair"));
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};
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};
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};
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// One 739 row: narrow load mnemonic + scale-pair counts + byte-id.
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fn chainreadrow(label: str, src: str, loadmov: str,
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outerscale: i32) void = {
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let td: str = testenv.fresh();
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testenv.writefile(strings.concat(td, "/src.ww"), src);
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emitstage(td, label, "cstage", testenv.driver("w6c"), "cs.s");
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emitstage(td, label, "wwstage", testenv.driver("w6c_ww"), "ws.s");
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let cs: str = testenv.readfile(strings.concat(td, "/cs.s"));
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let ws: str = testenv.readfile(strings.concat(td, "/ws.s"));
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let needle: str = strings.concat("\t", loadmov, "\t(AX), AX\n");
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let cw: str = probewindow(label, "cstage", cs);
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let ww: str = probewindow(label, "wwstage", ws);
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if (!testenv.has(cw, needle)) {
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fail(label, strings.concat("cstage: expected `", loadmov,
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" (AX), AX` in probe body"));
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};
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if (!testenv.has(ww, needle)) {
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fail(label, strings.concat("wwstage: expected `", loadmov,
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" (AX), AX` in probe body"));
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};
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scalecheck(label, "cstage", cw, outerscale);
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scalecheck(label, "wwstage", ww, outerscale);
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if (!testenv.same(cs, ws)) {
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fail(label, "cstage vs wwstage asm differs");
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};
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testenv.clean(td);
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};
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// 739: **T chained read. esz of the outer index must come from the
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// inner index's value type, not the default 8.
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@test fn chainedindex() void = {
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chainreadrow("chained_u8", strings.concat(
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"package main;\n",
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"fn probe(names: **u8) u8 = {\n",
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" let i: i32 = 0;\n",
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" let k: u64 = 0u64;\n",
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" return names[i][k];\n",
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"};\n",
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"export fn main() i32 = { return 0; };\n"),
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"MOVZBQ", 1);
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chainreadrow("chained_i32", strings.concat(
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"package main;\n",
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"fn probe(mat: **i32) i32 = {\n",
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" let i: i32 = 0;\n",
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" let k: u64 = 0u64;\n",
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" return mat[i][k];\n",
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"};\n",
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"export fn main() i32 = { return 0; };\n"),
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"MOVSXD", 4);
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};
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// One 740 row: narrow store mnemonic, the u8 row's wrong-width-store
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// anti-needle, scale-pair counts, byte-id.
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fn chainwriterow(label: str, src: str, storemov: str,
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outerscale: i32) void = {
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let td: str = testenv.fresh();
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testenv.writefile(strings.concat(td, "/src.ww"), src);
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emitstage(td, label, "cstage", testenv.driver("w6c"), "cs.s");
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emitstage(td, label, "wwstage", testenv.driver("w6c_ww"), "ws.s");
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let cs: str = testenv.readfile(strings.concat(td, "/cs.s"));
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let ws: str = testenv.readfile(strings.concat(td, "/ws.s"));
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let needle: str = strings.concat("\t", storemov, "\tAX, (BX)\n");
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let cw: str = probewindow(label, "cstage", cs);
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let ww: str = probewindow(label, "wwstage", ws);
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if (!testenv.has(cw, needle)) {
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fail(label, strings.concat("cstage: expected `", storemov,
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" AX, (BX)` in probe body"));
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};
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if (!testenv.has(ww, needle)) {
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fail(label, strings.concat("wwstage: expected `", storemov,
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" AX, (BX)` in probe body"));
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};
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if (outerscale == 1) {
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if (testenv.has(cw, "\tMOVQ\tAX, (BX)\n")
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|| testenv.has(ww, "\tMOVQ\tAX, (BX)\n")) {
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fail(label, strings.concat(
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"stray 8-byte `MOVQ AX, (BX)` in probe body -- ",
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"pre-#27 wrong-width-store regression"));
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};
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};
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scalecheck(label, "cstage", cw, outerscale);
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scalecheck(label, "wwstage", ww, outerscale);
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if (!testenv.same(cs, ws)) {
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fail(label, "cstage vs wwstage asm differs");
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};
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testenv.clean(td);
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};
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// 740: **T chained write, sister of 739 on the cgassign side — the
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// wrong-width store corrupts memory adjacent to the u8 slot.
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@test fn chainedwrite() void = {
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chainwriterow("chained_u8", strings.concat(
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"package main;\n",
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"fn probe(names: **u8) void = {\n",
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" let i: i32 = 0;\n",
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" let k: u64 = 0u64;\n",
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" names[i][k] = 65u8;\n",
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"};\n",
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"export fn main() i32 = { return 0; };\n"),
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"MOVB", 1);
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chainwriterow("chained_i32", strings.concat(
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"package main;\n",
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"fn probe(mat: **i32) void = {\n",
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" let i: i32 = 0;\n",
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" let k: u64 = 0u64;\n",
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" mat[i][k] = 42i32;\n",
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"};\n",
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"export fn main() i32 = { return 0; };\n"),
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"MOVL", 4);
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};
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// One 741 row: dispatch-defining needle in the probe window plus
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// byte-id.
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fn dotbaserow(label: str, src: str, needle: str) void = {
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let td: str = testenv.fresh();
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testenv.writefile(strings.concat(td, "/src.ww"), src);
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emitstage(td, label, "cstage", testenv.driver("w6c"), "cs.s");
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emitstage(td, label, "wwstage", testenv.driver("w6c_ww"), "ws.s");
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let cs: str = testenv.readfile(strings.concat(td, "/cs.s"));
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let ws: str = testenv.readfile(strings.concat(td, "/ws.s"));
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if (!testenv.has(probewindow(label, "cstage", cs), needle)) {
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fail(label, strings.concat("cstage: expected `", needle,
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"` in probe body"));
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};
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if (!testenv.has(probewindow(label, "wwstage", ws), needle)) {
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fail(label, strings.concat("wwstage: expected `", needle,
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"` in probe body"));
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};
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if (!testenv.same(cs, ws)) {
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fail(label, "cstage vs wwstage asm differs");
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};
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testenv.clean(td);
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};
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// 741: N_DOT-base chains. The (i64|str) element is 8(tag)+24(str
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// payload)=32B, so the write row's stride needle is $32.
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@test fn dotbasechained() void = {
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dotbaserow("dotbase_chained_read", strings.concat(
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"package main;\n",
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"type S = struct{ pad: i64, mat: **u8 };\n",
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"fn probe(s: *S) u8 = {\n",
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" let i: i32 = 0;\n",
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" let k: u64 = 0u64;\n",
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" return s.mat[i][k];\n",
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"};\n",
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"export fn main() i32 = { return 0; };\n"),
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"\tMOVZBQ\t(AX), AX\n");
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dotbaserow("dotbase_array_tagged_write", strings.concat(
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"package main;\n",
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"type T = (i64 | str);\n",
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"type S = struct{ pad: i64, arr: [4]T };\n",
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"fn probe(s: *S) void = {\n",
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" let i: i32 = 0;\n",
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" s.arr[i] = 42i64;\n",
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"};\n",
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"export fn main() i32 = { return 0; };\n"),
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"\tMOVQ\t$32, CX\n");
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};
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fn unwrapaligncheck(label: str, stage: str, s: str) void = {
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let w: str = probewindow(label, stage, s);
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let call: i32 = testenv.pos(w, "\tCALL\tmain.mkpair(SB)\n");
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if (call < 0) {
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fail(label, strings.concat(stage, ": no CALL main.mkpair"));
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};
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let pre: str = strings.sub(w, 0, call);
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let post: str = strings.sub(w, call, w.len);
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if (testenv.has(pre, "\tPUSHQ\tBX\n")) {
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fail(label, strings.concat(stage,
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": destination PUSHQ remains outstanding at CALL"));
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};
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if (!testenv.has(pre, "\tMOVQ\tBX, -")) {
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fail(label, strings.concat(stage,
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": destination address is not spilled BP-relative"));
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};
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if (!testenv.has(post, "\tMOVQ\t-")
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|| !testenv.has(post, "(BP), BX\n")) {
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fail(label, strings.concat(stage,
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": destination address is not reloaded after CALL"));
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};
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if (!testenv.has(w, "TEXT main.probe,$16")) {
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fail(label, strings.concat(stage,
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": dedicated address spill is absent from the frame"));
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};
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};
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fn unwrapnestedcheck(label: str, stage: str, s: str) void = {
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let w: str = probewindow(label, stage, s);
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if (!testenv.has(w, "TEXT main.probe,$48")) {
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fail(label, strings.concat(stage,
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": nested spill frame is not $48"));
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};
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if (testenv.has(w, "\tPUSHQ\tBX\n")) {
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fail(label, strings.concat(stage,
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": destination PUSHQ remains in nested window"));
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};
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let osave: i32 = testenv.pos(w, "\tMOVQ\tBX, -8(BP)\n");
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let choice: i32 = posafter(w, osave + 1,
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"\tCALL\tmain.choice(SB)\n");
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let isave: i32 = posafter(w, choice + 1,
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"\tMOVQ\tBX, -48(BP)\n");
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let make: i32 = posafter(w, isave + 1,
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"\tCALL\tmain.make(SB)\n");
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let iload: i32 = posafter(w, make + 1,
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"\tMOVQ\t-48(BP), BX\n");
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let pass: i32 = posafter(w, iload + 1,
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"\tCALL\tmain.pass(SB)\n");
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let oload: i32 = posafter(w, pass + 1,
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"\tMOVQ\t-8(BP), BX\n");
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if (osave < 0 || choice < 0 || isave < 0 || make < 0
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|| iload < 0 || pass < 0 || oload < 0) {
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fail(label, strings.concat(stage,
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": nested destination spills are not distinct and scoped"));
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};
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};
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fn commandexit(dir: str, name: str, av: []str) i32 = {
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let co: testenv.commandout;
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testenv.runcommand(dir, dir, name, av, tmo(), &co);
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if (co.termination != exec.termination.EXIT) { return -1; };
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return co.code;
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};
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@test fn unwrapcallalign() void = {
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let label: str = "global_unwrap_call_alignment";
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let td: str = testenv.fresh();
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let src: str = strings.concat(
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"package main;\n",
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"type e = !i32;\n",
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"type pair = struct { a: i64, b: i64 };\n",
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"type box = struct { f: pair, guard: i64 };\n",
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"fn mkpair(x: f64) (pair | e) = {\n",
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" return pair { a = 111i64, b = 222i64 };\n",
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"};\n",
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"let gb: box = box {\n",
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" f = pair { a = 9i64, b = 9i64 }, guard = 7i64\n",
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"};\n",
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"fn probe() i32 = {\n",
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" gb.f = mkpair(1.25f64)!;\n",
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" if (gb.f.a != 111i64 || gb.f.b != 222i64",
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" || gb.guard != 7i64) { return 91; };\n",
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" return 37;\n",
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"};\n",
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"export fn main() i32 = { return probe(); };\n");
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testenv.writefile(strings.concat(td, "/src.ww"), src);
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emitstage(td, label, "cstage", testenv.driver("w6c"), "cs.s");
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emitstage(td, label, "wwstage", testenv.driver("w6c_ww"), "ws.s");
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let cs: str = testenv.readfile(strings.concat(td, "/cs.s"));
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let ws: str = testenv.readfile(strings.concat(td, "/ws.s"));
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unwrapaligncheck(label, "cstage", cs);
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unwrapaligncheck(label, "wwstage", ws);
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if (!testenv.same(cs, ws)) {
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fail(label, "cstage vs wwstage asm differs");
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};
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let out: str = strings.concat(td, "/unwrapalign");
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let bav: []str = [testenv.driver("ww"), "build", "-o", out,
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"src.ww"];
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if (commandexit(td, "build", bav) != 0) {
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fail(label, "runtime pin build failed");
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};
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let rav: []str = [out];
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if (commandexit(td, "run", rav) != 37) {
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fail(label, "payload/neighbor runtime exit != 37");
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};
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testenv.clean(td);
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};
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// The outer destination stays live while its call argument lowers a
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// match arm containing another #16 assignment. A per-fn shared spill
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// redirected both stores to inner.f and left outer.f unchanged.
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@test fn unwrapnestedlive() void = {
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let label: str = "nested_global_unwrap_destination";
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let td: str = testenv.fresh();
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let src: str = strings.concat(
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"package main;\n",
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"type e = !i32;\n",
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"type pair = struct { a: i64, b: i64 };\n",
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"type box = struct { f: pair, guard: i64 };\n",
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"let outer: box = box {\n",
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" f = pair { a = 1i64, b = 2i64 }, guard = 7i64\n",
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"};\n",
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"let inner: box = box {\n",
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" f = pair { a = 3i64, b = 4i64 }, guard = 8i64\n",
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"};\n",
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"fn make() (pair | e) = {\n",
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" return pair { a = 111i64, b = 222i64 };\n",
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"};\n",
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"fn choice() (i32 | str) = { return 1i32; };\n",
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"fn pass(x: i64) (pair | e) = {\n",
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" return pair { a = 111i64 + x, b = 222i64 };\n",
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"};\n",
|
|
"fn probe() i32 = {\n",
|
|
" outer.f = pass(match (choice()) {\n",
|
|
" case i32 => {\n",
|
|
" inner.f = make()!;\n",
|
|
" yield 0i64;\n",
|
|
" };\n",
|
|
" case str => yield 0i64;\n",
|
|
" })!;\n",
|
|
" if (outer.f.a != 111i64 || outer.f.b != 222i64",
|
|
" || outer.guard != 7i64) { return 91; };\n",
|
|
" if (inner.f.a != 111i64 || inner.f.b != 222i64",
|
|
" || inner.guard != 8i64) { return 92; };\n",
|
|
" return 37;\n",
|
|
"};\n",
|
|
"export fn main() i32 = { return probe(); };\n");
|
|
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"));
|
|
unwrapnestedcheck(label, "cstage", cs);
|
|
unwrapnestedcheck(label, "wwstage", ws);
|
|
if (!testenv.same(cs, ws)) {
|
|
fail(label, "cstage vs wwstage asm differs");
|
|
};
|
|
let out: str = strings.concat(td, "/unwrapnested");
|
|
let bav: []str = [testenv.driver("ww"), "build", "-o", out,
|
|
"src.ww"];
|
|
if (commandexit(td, "build", bav) != 0) {
|
|
fail(label, "nested runtime pin build failed");
|
|
};
|
|
let rav: []str = [out];
|
|
if (commandexit(td, "run", rav) != 37) {
|
|
fail(label, "nested payload/neighbour runtime exit != 37");
|
|
};
|
|
testenv.clean(td);
|
|
};
|