Mercurial > vec
view test/test_align.h @ 25:92156fe32755
impl/ppc/altivec: update to new implementation
the signed average function is wrong; it needs to round up the number
when only one of them is odd, but that doesn't necessarily seem to be
true because altivec is weird, and that's what we need to emulate the
quirks for. ugh.
also the altivec backend uses the generic functions instead of fallbacks
because it does indeed use the exact same memory structure as the generic
implementation...
author | Paper <paper@tflc.us> |
---|---|
date | Sun, 24 Nov 2024 11:15:59 +0000 |
parents | 41dd962abdd1 |
children |
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static int test_align(void) { int ret = 0; #define RUN_TEST(sign, csign, bits, size) \ do { \ /* allocate the aligned array */ \ V##csign##INT##bits##x##size##_ALIGNED_ARRAY(vec_arr); \ \ /* fill the values */ \ for (int i = 0; i < size; i++) \ vec_arr[i] = i; \ \ /* try to load it */ \ v##sign##int##bits##x##size vec = v##sign##int##bits##x##size##_load_aligned(vec_arr); \ \ /* now allocate an output array */ \ V##csign##INT##bits##x##size##_ALIGNED_ARRAY(vec_arr_out); \ \ /* try storing it */ \ v##sign##int##bits##x##size##_store_aligned(vec, vec_arr_out); \ \ /* mark success or failure */ \ ret |= !!memcmp(vec_arr, vec_arr_out, size * sizeof(*vec_arr)); \ \ ret |= !V##csign##INT##bits##x##size##_PTR_ALIGNED(vec_arr); \ ret |= !V##csign##INT##bits##x##size##_PTR_ALIGNED(vec_arr_out); \ } while (0); #define RUN_TESTS(bits, size) \ RUN_TEST( , , bits, size) \ RUN_TEST(u, U, bits, size) RUN_TESTS(8, 2) RUN_TESTS(8, 4) RUN_TESTS(16, 2) RUN_TESTS(8, 8) RUN_TESTS(16, 4) RUN_TESTS(32, 2) RUN_TESTS(8, 16) RUN_TESTS(16, 8) RUN_TESTS(32, 4) RUN_TESTS(64, 2) RUN_TESTS(8, 32) RUN_TESTS(16, 16) RUN_TESTS(32, 8) RUN_TESTS(64, 4) RUN_TESTS(8, 64) RUN_TESTS(16, 32) RUN_TESTS(32, 16) RUN_TESTS(64, 8) #undef RUN_TESTS #undef RUN_TEST return ret; }