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target/ppc: Moved XVTSTDC[DS]P to decodetree

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Moved XVTSTDCSP and XVTSTDCDP to decodetree an restructured the helper
to be simpler and do all decoding in the decodetree (so XB, XT and DCMX
are all calculated outside the helper).

Obs: The tests in this one are slightly different, these are the sum of
these instructions with all possible immediate and those instructions
are repeated 10 times.

xvtstdcsp:
rept    loop    master             patch
8       12500   2,76402100         2,70699100 (-2.1%)
25      4000    2,64867100         2,67884100 (+1.1%)
100     1000    2,73806300         2,78701000 (+1.8%)
500     200     3,44666500         3,61027600 (+4.7%)
2500    40      5,85790200         6,47475500 (+10.5%)
8000    12     15,22102100        17,46062900 (+14.7%)

xvtstdcdp:
rept    loop    master             patch
8       12500   2,11818000         1,61065300 (-24.0%)
25      4000    2,04573400         1,60132200 (-21.7%)
100     1000    2,13834100         1,69988100 (-20.5%)
500     200     2,73977000         2,48631700 (-9.3%)
2500    40      5,05067000         5,25914100 (+4.1%)
8000    12     14,60507800        15,93704900 (+9.1%)

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-11-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Lucas Mateus Castro (alqotel) 2022-10-19 09:50:38 -03:00 • committed by Daniel Henrique Barboza
parent 95a89d3118
commit a70a524710
5 changed files with 70 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

39
target/ppc/fpu_helper.c
View file

@ -3295,11 +3295,46 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
} \
}
VSX_TEST_DC(xvtstdcdp, 2, xB(opcode), float64, VsrD(i), VsrD(i), UINT64_MAX, 0)
VSX_TEST_DC(xvtstdcsp, 4, xB(opcode), float32, VsrW(i), VsrW(i), UINT32_MAX, 0)
VSX_TEST_DC(xststdcdp, 1, xB(opcode), float64, VsrD(0), VsrD(0), 0, 1)
VSX_TEST_DC(xststdcqp, 1, (rB(opcode) + 32), float128, f128, VsrD(0), 0, 1)
#define VSX_TSTDC(tp) \
static int32_t tp##_tstdc(tp b, uint32_t dcmx) \
{ \
uint32_t match = 0; \
uint32_t sign = tp##_is_neg(b); \
if (tp##_is_any_nan(b)) { \
match = extract32(dcmx, 6, 1); \
} else if (tp##_is_infinity(b)) { \
match = extract32(dcmx, 4 + !sign, 1); \
} else if (tp##_is_zero(b)) { \
match = extract32(dcmx, 2 + !sign, 1); \
} else if (tp##_is_zero_or_denormal(b)) { \
match = extract32(dcmx, 0 + !sign, 1); \
} \
return (match != 0); \
}
VSX_TSTDC(float32)
VSX_TSTDC(float64)
#undef VSX_TSTDC
void helper_XVTSTDCDP(ppc_vsr_t *t, ppc_vsr_t *b, uint64_t dcmx, uint32_t v)
{
int i;
for (i = 0; i < 2; i++) {
t->s64[i] = (int64_t)-float64_tstdc(b->f64[i], dcmx);
}
}
void helper_XVTSTDCSP(ppc_vsr_t *t, ppc_vsr_t *b, uint64_t dcmx, uint32_t v)
{
int i;
for (i = 0; i < 4; i++) {
t->s32[i] = (int32_t)-float32_tstdc(b->f32[i], dcmx);
}
}
void helper_xststdcsp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xb)
{
uint32_t dcmx, sign, exp;