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target/i386: reimplement AVX comparison helpers

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AVX includes an additional set of comparison predicates, some of which
our softfloat implementation does not expose as separate functions.
Rewrite the helpers in terms of floatN_compare for future extensibility.

Signed-off-by: Paul Brook <paul@nowt.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220424220204.2493824-24-paul@nowt.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paul Brook 2022-08-25 23:58:15 +02:00 • committed by Paolo Bonzini
parent 3403cafeee
commit cbf4ad5498
3 changed files with 75 additions and 66 deletions
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97
target/i386/ops_sse.h
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@ -1005,57 +1005,66 @@ void glue(helper_addsubpd, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
}
}
/* XXX: unordered */
#define SSE_HELPER_CMP(name, F) \
void glue(helper_ ## name ## ps, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)\
#define SSE_HELPER_CMP_P(name, F, C) \
void glue(helper_ ## name ## ps, SUFFIX)(CPUX86State *env, \
Reg *d, Reg *s) \
{ \
d->ZMM_L(0) = F(32, d->ZMM_S(0), s->ZMM_S(0)); \
d->ZMM_L(1) = F(32, d->ZMM_S(1), s->ZMM_S(1)); \
d->ZMM_L(2) = F(32, d->ZMM_S(2), s->ZMM_S(2)); \
d->ZMM_L(3) = F(32, d->ZMM_S(3), s->ZMM_S(3)); \
Reg *v = d; \
int i; \
for (i = 0; i < 2 << SHIFT; i++) { \
d->ZMM_L(i) = C(F(32, v->ZMM_S(i), s->ZMM_S(i))) ? -1 : 0; \
} \
} \
\
void helper_ ## name ## ss(CPUX86State *env, Reg *d, Reg *s) \
void glue(helper_ ## name ## pd, SUFFIX)(CPUX86State *env, \
Reg *d, Reg *s) \
{ \
d->ZMM_L(0) = F(32, d->ZMM_S(0), s->ZMM_S(0)); \
} \
\
void glue(helper_ ## name ## pd, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)\
{ \
d->ZMM_Q(0) = F(64, d->ZMM_D(0), s->ZMM_D(0)); \
d->ZMM_Q(1) = F(64, d->ZMM_D(1), s->ZMM_D(1)); \
} \
\
void helper_ ## name ## sd(CPUX86State *env, Reg *d, Reg *s) \
{ \
d->ZMM_Q(0) = F(64, d->ZMM_D(0), s->ZMM_D(0)); \
Reg *v = d; \
int i; \
for (i = 0; i < 1 << SHIFT; i++) { \
d->ZMM_Q(i) = C(F(64, v->ZMM_D(i), s->ZMM_D(i))) ? -1 : 0; \
} \
}
#define FPU_CMPEQ(size, a, b) \
(float ## size ## _eq_quiet(a, b, &env->sse_status) ? -1 : 0)
#define FPU_CMPLT(size, a, b) \
(float ## size ## _lt(a, b, &env->sse_status) ? -1 : 0)
#define FPU_CMPLE(size, a, b) \
(float ## size ## _le(a, b, &env->sse_status) ? -1 : 0)
#define FPU_CMPUNORD(size, a, b) \
(float ## size ## _unordered_quiet(a, b, &env->sse_status) ? -1 : 0)
#define FPU_CMPNEQ(size, a, b) \
(float ## size ## _eq_quiet(a, b, &env->sse_status) ? 0 : -1)
#define FPU_CMPNLT(size, a, b) \
(float ## size ## _lt(a, b, &env->sse_status) ? 0 : -1)
#define FPU_CMPNLE(size, a, b) \
(float ## size ## _le(a, b, &env->sse_status) ? 0 : -1)
#define FPU_CMPORD(size, a, b) \
(float ## size ## _unordered_quiet(a, b, &env->sse_status) ? 0 : -1)
#if SHIFT == 1
#define SSE_HELPER_CMP(name, F, C) \
SSE_HELPER_CMP_P(name, F, C) \
void helper_ ## name ## ss(CPUX86State *env, Reg *d, Reg *s) \
{ \
Reg *v = d; \
d->ZMM_L(0) = C(F(32, v->ZMM_S(0), s->ZMM_S(0))) ? -1 : 0; \
} \
\
void helper_ ## name ## sd(CPUX86State *env, Reg *d, Reg *s) \
{ \
Reg *v = d; \
d->ZMM_Q(0) = C(F(64, v->ZMM_D(0), s->ZMM_D(0))) ? -1 : 0; \
}
SSE_HELPER_CMP(cmpeq, FPU_CMPEQ)
SSE_HELPER_CMP(cmplt, FPU_CMPLT)
SSE_HELPER_CMP(cmple, FPU_CMPLE)
SSE_HELPER_CMP(cmpunord, FPU_CMPUNORD)
SSE_HELPER_CMP(cmpneq, FPU_CMPNEQ)
SSE_HELPER_CMP(cmpnlt, FPU_CMPNLT)
SSE_HELPER_CMP(cmpnle, FPU_CMPNLE)
SSE_HELPER_CMP(cmpord, FPU_CMPORD)
#define FPU_EQ(x) (x == float_relation_equal)
#define FPU_LT(x) (x == float_relation_less)
#define FPU_LE(x) (x <= float_relation_equal)
#define FPU_UNORD(x) (x == float_relation_unordered)
#define FPU_CMPQ(size, a, b) \
float ## size ## _compare_quiet(a, b, &env->sse_status)
#define FPU_CMPS(size, a, b) \
float ## size ## _compare(a, b, &env->sse_status)
#else
#define SSE_HELPER_CMP(name, F, C) SSE_HELPER_CMP_P(name, F, C)
#endif
SSE_HELPER_CMP(cmpeq, FPU_CMPQ, FPU_EQ)
SSE_HELPER_CMP(cmplt, FPU_CMPS, FPU_LT)
SSE_HELPER_CMP(cmple, FPU_CMPS, FPU_LE)
SSE_HELPER_CMP(cmpunord, FPU_CMPQ, FPU_UNORD)
SSE_HELPER_CMP(cmpneq, FPU_CMPQ, !FPU_EQ)
SSE_HELPER_CMP(cmpnlt, FPU_CMPS, !FPU_LT)
SSE_HELPER_CMP(cmpnle, FPU_CMPS, !FPU_LE)
SSE_HELPER_CMP(cmpord, FPU_CMPQ, !FPU_UNORD)
#undef SSE_HELPER_CMP
static const int comis_eflags[4] = {CC_C, CC_Z, 0, CC_Z | CC_P | CC_C};