vectorscan/unit/internal/uniform_ops.cpp

/*
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#include "gtest/gtest.h"

#include "config.h"
#include "ue2common.h"
#include "util/uniform_ops.h"
#include "util/alloc.h"

using namespace ue2;

TEST(Uniform, Sizes) {
    // We likely depend on the size of the structures in various different
    // places in UE2, and it's conceivable that they could vary by
    // platform/compiler.
    EXPECT_EQ(1U, sizeof(u8));
    EXPECT_EQ(2U, sizeof(u16));
    EXPECT_EQ(4U, sizeof(u32));
    EXPECT_EQ(8U, sizeof(u64a));
    EXPECT_EQ(16U, sizeof(m128));
    EXPECT_EQ(32U, sizeof(m256));
    EXPECT_EQ(64U, sizeof(m512));
}

TEST(Uniform, loadstore_u8) {
    for (int i = 0; i < 8; i++) {
        u8 in = 1 << i;
        const char *cin = reinterpret_cast<const char *>(&in);
        u8 out = load_u8(cin);
        EXPECT_EQ(in, out);
        char ALIGN_DIRECTIVE stored[1];
        store_u8(stored, in);
        EXPECT_EQ(0, memcmp(stored, &in, sizeof(in)));
    }
}

TEST(Uniform, loadstore_u16) {
    for (int i = 0; i < 16; i++) {
        u16 in = 1 << i;
        const char *cin = reinterpret_cast<const char *>(&in);
        u16 out = load_u16(cin);
        EXPECT_EQ(in, out);
        void *stored = aligned_zmalloc(2);
        store_u16(stored, in);
        EXPECT_EQ(0, memcmp(stored, &in, sizeof(in)));
        aligned_free(stored);
    }
}

TEST(Uniform, loadstore_u32) {
    for (int i = 0; i < 32; i++) {
        u32 in = 1U << i;
        const char *cin = reinterpret_cast<const char *>(&in);
        u32 out = load_u32(cin);
        EXPECT_EQ(in, out);
        void *stored = aligned_zmalloc(32/8);
        store_u32(stored, in);
        EXPECT_EQ(0, memcmp(stored, &in, sizeof(in)));
        aligned_free(stored);
    }
}

TEST(Uniform, loadstore_u64a) {
    for (int i = 0; i < 64; i++) {
        u64a in = 1ULL << i;
        const char *cin = reinterpret_cast<const char *>(&in);
        u64a out = load_u64a(cin);
        EXPECT_EQ(in, out);
        void *stored = aligned_zmalloc(64/8);
        store_u64a(stored, in);
        EXPECT_EQ(0, memcmp(stored, &in, sizeof(in)));
        aligned_free(stored);
    }
}

TEST(Uniform, loadstore_m128) {
    union {
        m128 simd;
        u32 words[128/32];
    } in;
    for (int i = 0; i < 128; i++) {
        memset(&in, 0, sizeof(in)); // cppcheck-suppress memsetClassFloat
        in.words[i/32] = 1U << (i % 32);
        const char *cin = reinterpret_cast<const char *>(&in);
        m128 out = load_m128(cin);
        EXPECT_EQ(0, memcmp(&out, &in, sizeof(out)));
        void *stored = aligned_zmalloc(128/8);
        store_m128(stored, in.simd);
        EXPECT_EQ(0, memcmp(stored, &in, sizeof(in)));
        aligned_free(stored);
    }
}

TEST(Uniform, loadstore_m256) {
    union {
        m256 simd;
        u32 words[256/32];
    } in;
    for (int i = 0; i < 256; i++) {
        memset(&in, 0, sizeof(in)); // cppcheck-suppress memsetClassFloat
        in.words[i/32] = 1U << (i % 32);
        const char *cin = reinterpret_cast<const char *>(&in);
        m256 out = load_m256(cin);
        EXPECT_EQ(0, memcmp(&out, &in, sizeof(out)));
        void *stored = aligned_zmalloc(256/8);
        store_m256(stored, in.simd);
        EXPECT_EQ(0, memcmp(stored, &in, sizeof(in)));
        aligned_free(stored);
    }
}

TEST(Uniform, loadstore_m512) {
    union {
        m512 simd;
        u32 words[512/32];
    } in;
    for (int i = 0; i < 512; i++) {
        memset(&in, 0, sizeof(in)); // cppcheck-suppress memsetClassFloat
        in.words[i/32] = 1U << (i % 32);
        const char *cin = reinterpret_cast<const char *>(&in);
        m512 out = load_m512(cin);
        EXPECT_EQ(0, memcmp(&out, &in, sizeof(out)));
        void *stored = aligned_zmalloc(512/8);
        store_m512(stored, in.simd);
        EXPECT_EQ(0, memcmp(stored, &in, sizeof(in)));
        aligned_free(stored);
    }
}

TEST(Uniform, testbit_u32) {
    for (u32 i = 0; i < 32; i++) {
        u32 v = 0;
        EXPECT_EQ((char)0, testbit_u32(v, i));
        v |= 1ULL << i;
        EXPECT_EQ((char)1, testbit_u32(v, i));
        v = ~v;
        EXPECT_EQ((char)0, testbit_u32(v, i));
        v |= 1ULL << i;
        EXPECT_EQ((char)1, testbit_u32(v, i));
    }
}

TEST(Uniform, testbit_u64a) {
    for (u32 i = 0; i < 64; i++) {
        u64a v = 0;
        EXPECT_EQ((char)0, testbit_u64a(v, i));
        v |= 1ULL << i;
        EXPECT_EQ((char)1, testbit_u64a(v, i));
        v = ~v;
        EXPECT_EQ((char)0, testbit_u64a(v, i));
        v |= 1ULL << i;
        EXPECT_EQ((char)1, testbit_u64a(v, i));
    }
}

TEST(Uniform, clearbit_u32) {
    for (u32 i = 0; i < 32; i++) {
        u32 v = ~0U;
        clearbit_u32(&v, i);
        EXPECT_EQ((char)0, testbit_u32(v, i));
        v = ~v;
        clearbit_u32(&v, i);
        EXPECT_EQ(0U, v);
    }
}

TEST(Uniform, clearbit_u64a) {
    for (u32 i = 0; i < 64; i++) {
        u64a v = ~0ULL;
        clearbit_u64a(&v, i);
        EXPECT_EQ((char)0, testbit_u64a(v, i));
        v = ~v;
        clearbit_u64a(&v, i);
        EXPECT_EQ(0ULL, v);
    }
}