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Hexagon (target/hexagon) add A5_ACS (vacsh)

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Rxx32,Pe4 = vacsh(Rss32, Rtt32)
    Add compare and select elements of two vectors

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: <1617930474-31979-20-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 20:07:47 -05:00 • committed by Richard Henderson
parent dd8705bdf5
commit da74cd2dce
6 changed files with 129 additions and 0 deletions
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69
tests/tcg/hexagon/multi_result.c
View file

@ -45,8 +45,41 @@ static int sfinvsqrta(int Rs, int *pred_result)
return result;
}
static long long vacsh(long long Rxx, long long Rss, long long Rtt,
int *pred_result, int *ovf_result)
{
long long result = Rxx;
int predval;
int usr;
/*
* This instruction can set bit 0 (OVF/overflow) in usr
* Clear the bit first, then return that bit to the caller
*/
asm volatile("r2 = usr\n\t"
"r2 = clrbit(r2, #0)\n\t" /* clear overflow bit */
"usr = r2\n\t"
"%0,p0 = vacsh(%3, %4)\n\t"
"%1 = p0\n\t"
"%2 = usr\n\t"
: "+r"(result), "=r"(predval), "=r"(usr)
: "r"(Rss), "r"(Rtt)
: "r2", "p0", "usr");
*pred_result = predval;
*ovf_result = (usr & 1);
return result;
}
int err;
static void check_ll(long long val, long long expect)
{
if (val != expect) {
printf("ERROR: 0x%016llx != 0x%016llx\n", val, expect);
err++;
}
}
static void check(int val, int expect)
{
if (val != expect) {
@ -87,10 +120,46 @@ static void test_sfinvsqrta()
check_p(pred_result, 0x0);
}
static void test_vacsh()
{
long long res64;
int pred_result;
int ovf_result;
res64 = vacsh(0x0004000300020001LL,
0x0001000200030004LL,
0x0000000000000000LL, &pred_result, &ovf_result);
check_ll(res64, 0x0004000300030004LL);
check_p(pred_result, 0xf0);
check(ovf_result, 0);
res64 = vacsh(0x0004000300020001LL,
0x0001000200030004LL,
0x000affff000d0000LL, &pred_result, &ovf_result);
check_ll(res64, 0x000e0003000f0004LL);
check_p(pred_result, 0xcc);
check(ovf_result, 0);
res64 = vacsh(0x00047fff00020001LL,
0x00017fff00030004LL,
0x000a0fff000d0000LL, &pred_result, &ovf_result);
check_ll(res64, 0x000e7fff000f0004LL);
check_p(pred_result, 0xfc);
check(ovf_result, 1);
res64 = vacsh(0x0004000300020001LL,
0x0001000200030009LL,
0x000affff000d0001LL, &pred_result, &ovf_result);
check_ll(res64, 0x000e0003000f0008LL);
check_p(pred_result, 0xcc);
check(ovf_result, 0);
}
int main()
{
test_sfrecipa();
test_sfinvsqrta();
test_vacsh();
puts(err ? "FAIL" : "PASS");
return err;