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Hexagon (target/hexagon) add A4_addp_c/A4_subp_c

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Rdd32 = add(Rss32, Rtt32, Px4):carry
    Add with carry
Rdd32 = sub(Rss32, Rtt32, Px4):carry
    Sub with carry

Test cases in tests/tcg/hexagon/multi_result.c

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-22-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Taylor Simpson 2021-04-08 20:07:49 -05:00 • committed by Richard Henderson
parent 0a65d28693
commit 57d352ac29
5 changed files with 147 additions and 0 deletions
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82
tests/tcg/hexagon/multi_result.c
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@ -85,6 +85,38 @@ static long long vminub(long long Rtt, long long Rss,
return result;
}
static long long add_carry(long long Rss, long long Rtt,
int pred_in, int *pred_result)
{
long long result;
int predval = pred_in;
asm volatile("p0 = %1\n\t"
"%0 = add(%2, %3, p0):carry\n\t"
"%1 = p0\n\t"
: "=r"(result), "+r"(predval)
: "r"(Rss), "r"(Rtt)
: "p0");
*pred_result = predval;
return result;
}
static long long sub_carry(long long Rss, long long Rtt,
int pred_in, int *pred_result)
{
long long result;
int predval = pred_in;
asm volatile("p0 = !cmp.eq(%1, #0)\n\t"
"%0 = sub(%2, %3, p0):carry\n\t"
"%1 = p0\n\t"
: "=r"(result), "+r"(predval)
: "r"(Rss), "r"(Rtt)
: "p0");
*pred_result = predval;
return result;
}
int err;
static void check_ll(long long val, long long expect)
@ -188,12 +220,62 @@ static void test_vminub()
check_p(pred_result, 0xaa);
}
static void test_add_carry()
{
long long res64;
int pred_result;
res64 = add_carry(0x0000000000000000LL,
0xffffffffffffffffLL,
1, &pred_result);
check_ll(res64, 0x0000000000000000LL);
check_p(pred_result, 0xff);
res64 = add_carry(0x0000000100000000LL,
0xffffffffffffffffLL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
res64 = add_carry(0x0000000100000000LL,
0xffffffffffffffffLL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
}
static void test_sub_carry()
{
long long res64;
int pred_result;
res64 = sub_carry(0x0000000000000000LL,
0x0000000000000000LL,
1, &pred_result);
check_ll(res64, 0x0000000000000000LL);
check_p(pred_result, 0xff);
res64 = sub_carry(0x0000000100000000LL,
0x0000000000000000LL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
res64 = sub_carry(0x0000000100000000LL,
0x0000000000000000LL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
}
int main()
{
test_sfrecipa();
test_sfinvsqrta();
test_vacsh();
test_vminub();
test_add_carry();
test_sub_carry();
puts(err ? "FAIL" : "PASS");
return err;