Commit e5adfd87bc

Andrew Kelley <andrew@ziglang.org>
2025-09-06 07:52:55
translate-c: remove cases associated with runtime vector indexing
C translation is in the process of switching to be aro-based (see #24497) That codebase will need to gain some kind of helper for translating C code that uses runtime vector indexing.
1 parent f0fe55a
Changed files (1)
test/run_translated_c.zig
@@ -1316,110 +1316,6 @@ pub fn addCases(cases: *tests.RunTranslatedCContext) void {
         \\}
     , "");
 
-    cases.add("basic vector expressions",
-        \\#include <stdlib.h>
-        \\#include <stdint.h>
-        \\typedef int16_t  __v8hi __attribute__((__vector_size__(16)));
-        \\int main(int argc, char**argv) {
-        \\    __v8hi uninitialized;
-        \\    __v8hi empty_init = {};
-        \\    for (int i = 0; i < 8; i++) {
-        \\        if (empty_init[i] != 0) abort();
-        \\    }
-        \\    __v8hi partial_init = {0, 1, 2, 3};
-        \\
-        \\    __v8hi a = {0, 1, 2, 3, 4, 5, 6, 7};
-        \\    __v8hi b = (__v8hi) {100, 200, 300, 400, 500, 600, 700, 800};
-        \\
-        \\    __v8hi sum = a + b;
-        \\    for (int i = 0; i < 8; i++) {
-        \\        if (sum[i] != a[i] + b[i]) abort();
-        \\    }
-        \\    return 0;
-        \\}
-    , "");
-
-    cases.add("__builtin_shufflevector",
-        \\#include <stdlib.h>
-        \\#include <stdint.h>
-        \\typedef int16_t  __v4hi __attribute__((__vector_size__(8)));
-        \\typedef int16_t  __v8hi __attribute__((__vector_size__(16)));
-        \\int main(int argc, char**argv) {
-        \\    __v8hi v8_a = {0, 1, 2, 3, 4, 5, 6, 7};
-        \\    __v8hi v8_b = {100, 200, 300, 400, 500, 600, 700, 800};
-        \\    __v8hi shuffled = __builtin_shufflevector(v8_a, v8_b, 0, 1, 2, 3, 8, 9, 10, 11);
-        \\    for (int i = 0; i < 8; i++) {
-        \\        if (i < 4) {
-        \\            if (shuffled[i] != v8_a[i]) abort();
-        \\        } else {
-        \\            if (shuffled[i] != v8_b[i - 4]) abort();
-        \\        }
-        \\    }
-        \\    shuffled = __builtin_shufflevector(
-        \\        (__v8hi) {-1, -1, -1, -1, -1, -1, -1, -1},
-        \\        (__v8hi) {42, 42, 42, 42, 42, 42, 42, 42},
-        \\        0, 1, 2, 3, 8, 9, 10, 11
-        \\    );
-        \\    for (int i = 0; i < 8; i++) {
-        \\        if (i < 4) {
-        \\            if (shuffled[i] != -1) abort();
-        \\        } else {
-        \\            if (shuffled[i] != 42) abort();
-        \\        }
-        \\    }
-        \\    __v4hi shuffled_to_fewer_elements = __builtin_shufflevector(v8_a, v8_b, 0, 1, 8, 9);
-        \\    for (int i = 0; i < 4; i++) {
-        \\        if (i < 2) {
-        \\            if (shuffled_to_fewer_elements[i] != v8_a[i]) abort();
-        \\        } else {
-        \\            if (shuffled_to_fewer_elements[i] != v8_b[i - 2]) abort();
-        \\        }
-        \\    }
-        \\    __v4hi v4_a = {0, 1, 2, 3};
-        \\    __v4hi v4_b = {100, 200, 300, 400};
-        \\    __v8hi shuffled_to_more_elements = __builtin_shufflevector(v4_a, v4_b, 0, 1, 2, 3, 4, 5, 6, 7);
-        \\    for (int i = 0; i < 4; i++) {
-        \\        if (shuffled_to_more_elements[i] != v4_a[i]) abort();
-        \\        if (shuffled_to_more_elements[i + 4] != v4_b[i]) abort();
-        \\    }
-        \\    return 0;
-        \\}
-    , "");
-
-    cases.add("__builtin_convertvector",
-        \\#include <stdlib.h>
-        \\#include <stdint.h>
-        \\typedef int16_t  __v8hi __attribute__((__vector_size__(16)));
-        \\typedef uint16_t __v8hu __attribute__((__vector_size__(16)));
-        \\int main(int argc, char**argv) {
-        \\    __v8hi signed_vector = { 1, 2, 3, 4, -1, -2, -3,-4};
-        \\    __v8hu unsigned_vector = __builtin_convertvector(signed_vector, __v8hu);
-        \\
-        \\    for (int i = 0; i < 8; i++) {
-        \\        if (unsigned_vector[i] != (uint16_t)signed_vector[i]) abort();
-        \\    }
-        \\    return 0;
-        \\}
-    , "");
-
-    cases.add("vector casting",
-        \\#include <stdlib.h>
-        \\#include <stdint.h>
-        \\typedef int8_t __v8qi __attribute__((__vector_size__(8)));
-        \\typedef uint8_t __v8qu __attribute__((__vector_size__(8)));
-        \\int main(int argc, char**argv) {
-        \\    __v8qi signed_vector = { 1, 2, 3, 4, -1, -2, -3,-4};
-        \\
-        \\    uint64_t big_int = (uint64_t) signed_vector;
-        \\    if (big_int != 0x01020304FFFEFDFCULL && big_int != 0xFCFDFEFF04030201ULL) abort();
-        \\    __v8qu unsigned_vector = (__v8qu) big_int;
-        \\    for (int i = 0; i < 8; i++) {
-        \\        if (unsigned_vector[i] != (uint8_t)signed_vector[i] && unsigned_vector[i] != (uint8_t)signed_vector[7 - i]) abort();
-        \\    }
-        \\    return 0;
-        \\}
-    , "");
-
     cases.add("break from switch statement. Issue #8387",
         \\#include <stdlib.h>
         \\int switcher(int x) {