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-rw-r--r--gcc/config/i386/i386-expand.c91
-rw-r--r--gcc/config/i386/mmx.md16
2 files changed, 82 insertions, 25 deletions
diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c
index dee3df2..eb6f9b0 100644
--- a/gcc/config/i386/i386-expand.c
+++ b/gcc/config/i386/i386-expand.c
@@ -17633,8 +17633,10 @@ expand_vec_perm_pshufb (struct expand_vec_perm_d *d)
if (vmode == V8QImode)
{
+ rtx m128 = GEN_INT (-128);
+
for (i = nelt; i < 16; ++i)
- rperm[i] = constm1_rtx;
+ rperm[i] = m128;
vpmode = V16QImode;
}
@@ -18972,7 +18974,8 @@ expand_vec_perm_2perm_pblendv (struct expand_vec_perm_d *d, bool two_insn)
;
else if (TARGET_AVX && (vmode == V4DFmode || vmode == V8SFmode))
;
- else if (TARGET_SSE4_1 && GET_MODE_SIZE (vmode) == 16)
+ else if (TARGET_SSE4_1 && (GET_MODE_SIZE (vmode) == 16
+ || GET_MODE_SIZE (vmode) == 8))
;
else
return false;
@@ -19229,14 +19232,31 @@ expand_vec_perm_pshufb2 (struct expand_vec_perm_d *d)
{
rtx rperm[2][16], vperm, l, h, op, m128;
unsigned int i, nelt, eltsz;
+ machine_mode mode;
+ rtx (*gen) (rtx, rtx, rtx);
- if (!TARGET_SSSE3 || GET_MODE_SIZE (d->vmode) != 16)
+ if (!TARGET_SSSE3 || (GET_MODE_SIZE (d->vmode) != 16
+ && GET_MODE_SIZE (d->vmode) != 8))
return false;
gcc_assert (!d->one_operand_p);
if (d->testing_p)
return true;
+ switch (GET_MODE_SIZE (d->vmode))
+ {
+ case 8:
+ mode = V8QImode;
+ gen = gen_mmx_pshufbv8qi3;
+ break;
+ case 16:
+ mode = V16QImode;
+ gen = gen_ssse3_pshufbv16qi3;
+ break;
+ default:
+ gcc_unreachable ();
+ }
+
nelt = d->nelt;
eltsz = GET_MODE_UNIT_SIZE (d->vmode);
@@ -19247,7 +19267,7 @@ expand_vec_perm_pshufb2 (struct expand_vec_perm_d *d)
m128 = GEN_INT (-128);
for (i = 0; i < nelt; ++i)
{
- unsigned j, e = d->perm[i];
+ unsigned j, k, e = d->perm[i];
unsigned which = (e >= nelt);
if (e >= nelt)
e -= nelt;
@@ -19257,26 +19277,29 @@ expand_vec_perm_pshufb2 (struct expand_vec_perm_d *d)
rperm[which][i*eltsz + j] = GEN_INT (e*eltsz + j);
rperm[1-which][i*eltsz + j] = m128;
}
+
+ for (k = i*eltsz + j; k < 16; ++k)
+ rperm[0][k] = rperm[1][k] = m128;
}
vperm = gen_rtx_CONST_VECTOR (V16QImode, gen_rtvec_v (16, rperm[0]));
vperm = force_reg (V16QImode, vperm);
- l = gen_reg_rtx (V16QImode);
- op = gen_lowpart (V16QImode, d->op0);
- emit_insn (gen_ssse3_pshufbv16qi3 (l, op, vperm));
+ l = gen_reg_rtx (mode);
+ op = gen_lowpart (mode, d->op0);
+ emit_insn (gen (l, op, vperm));
vperm = gen_rtx_CONST_VECTOR (V16QImode, gen_rtvec_v (16, rperm[1]));
vperm = force_reg (V16QImode, vperm);
- h = gen_reg_rtx (V16QImode);
- op = gen_lowpart (V16QImode, d->op1);
- emit_insn (gen_ssse3_pshufbv16qi3 (h, op, vperm));
+ h = gen_reg_rtx (mode);
+ op = gen_lowpart (mode, d->op1);
+ emit_insn (gen (h, op, vperm));
op = d->target;
- if (d->vmode != V16QImode)
- op = gen_reg_rtx (V16QImode);
- emit_insn (gen_iorv16qi3 (op, l, h));
+ if (d->vmode != mode)
+ op = gen_reg_rtx (mode);
+ emit_insn (gen_rtx_SET (op, gen_rtx_IOR (mode, l, h)));
if (op != d->target)
emit_move_insn (d->target, gen_lowpart (d->vmode, op));
@@ -19455,6 +19478,17 @@ expand_vec_perm_even_odd_pack (struct expand_vec_perm_d *d)
switch (d->vmode)
{
+ case E_V4HImode:
+ /* Required for "pack". */
+ if (!TARGET_SSE4_1)
+ return false;
+ c = 0xffff;
+ s = 16;
+ half_mode = V2SImode;
+ gen_and = gen_andv2si3;
+ gen_pack = gen_mmx_packusdw;
+ gen_shift = gen_lshrv2si3;
+ break;
case E_V8HImode:
/* Required for "pack". */
if (!TARGET_SSE4_1)
@@ -19507,7 +19541,7 @@ expand_vec_perm_even_odd_pack (struct expand_vec_perm_d *d)
end_perm = true;
break;
default:
- /* Only V8QI, V8HI, V16QI, V16HI and V32QI modes
+ /* Only V4HI, V8QI, V8HI, V16QI, V16HI and V32QI modes
are more profitable than general shuffles. */
return false;
}
@@ -19698,18 +19732,25 @@ expand_vec_perm_even_odd_1 (struct expand_vec_perm_d *d, unsigned odd)
break;
case E_V4HImode:
- if (d->testing_p)
- break;
- /* We need 2*log2(N)-1 operations to achieve odd/even
- with interleave. */
- t1 = gen_reg_rtx (V4HImode);
- emit_insn (gen_mmx_punpckhwd (t1, d->op0, d->op1));
- emit_insn (gen_mmx_punpcklwd (d->target, d->op0, d->op1));
- if (odd)
- t2 = gen_mmx_punpckhwd (d->target, d->target, t1);
+ if (TARGET_SSE4_1)
+ return expand_vec_perm_even_odd_pack (d);
+ else if (TARGET_SSSE3 && !TARGET_SLOW_PSHUFB)
+ return expand_vec_perm_pshufb2 (d);
else
- t2 = gen_mmx_punpcklwd (d->target, d->target, t1);
- emit_insn (t2);
+ {
+ if (d->testing_p)
+ break;
+ /* We need 2*log2(N)-1 operations to achieve odd/even
+ with interleave. */
+ t1 = gen_reg_rtx (V4HImode);
+ emit_insn (gen_mmx_punpckhwd (t1, d->op0, d->op1));
+ emit_insn (gen_mmx_punpcklwd (d->target, d->op0, d->op1));
+ if (odd)
+ t2 = gen_mmx_punpckhwd (d->target, d->target, t1);
+ else
+ t2 = gen_mmx_punpcklwd (d->target, d->target, t1);
+ emit_insn (t2);
+ }
break;
case E_V8HImode:
diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
index 1a9e7b0..59a16f4 100644
--- a/gcc/config/i386/mmx.md
+++ b/gcc/config/i386/mmx.md
@@ -2477,6 +2477,22 @@
(set_attr "type" "mmxshft,sselog,sselog")
(set_attr "mode" "DI,TI,TI")])
+(define_insn_and_split "mmx_packusdw"
+ [(set (match_operand:V4HI 0 "register_operand" "=Yr,*x,Yw")
+ (vec_concat:V4HI
+ (us_truncate:V2HI
+ (match_operand:V2SI 1 "register_operand" "0,0,Yw"))
+ (us_truncate:V2HI
+ (match_operand:V2SI 2 "register_operand" "Yr,*x,Yw"))))]
+ "TARGET_SSE4_1 && TARGET_MMX_WITH_SSE"
+ "#"
+ "&& reload_completed"
+ [(const_int 0)]
+ "ix86_split_mmx_pack (operands, US_TRUNCATE); DONE;"
+ [(set_attr "isa" "noavx,noavx,avx")
+ (set_attr "type" "sselog")
+ (set_attr "mode" "TI")])
+
(define_insn_and_split "mmx_punpckhbw"
[(set (match_operand:V8QI 0 "register_operand" "=y,x,Yw")
(vec_select:V8QI
generated by cgit v1.1 at 2025-05-21 22:43:00 +0000