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[mono][aot] Prefer concrete instances instead of gshared ones for met… #78182

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merged 2 commits into from
Nov 11, 2022
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[mono][aot] Prefer concrete instances instead of gshared ones for met… #78182

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d4ec04e
[mono][aot] Prefer concrete instances instead of gshared ones for met…
vargaz Nov 10, 2022
7a4195a
Avoid an assert when compiling Vector<object> instances.
vargaz Nov 11, 2022
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16 changes: 13 additions & 3 deletions src/mono/mono/mini/intrinsics.c
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Original file line number Diff line number Diff line change
Expand Up @@ -762,7 +762,7 @@ get_class_from_ldtoken_ins (MonoInst *ins)
* their relation (EQ/NE/NONE).
*/
static CompRelation
get_rttype_ins_relation (MonoInst *ins1, MonoInst *ins2)
get_rttype_ins_relation (MonoInst *ins1, MonoInst *ins2, gboolean *vtype_constrained_gparam)
{
MonoClass *k1 = get_class_from_ldtoken_ins (ins1);
MonoClass *k2 = get_class_from_ldtoken_ins (ins2);
Expand All @@ -783,6 +783,7 @@ get_rttype_ins_relation (MonoInst *ins1, MonoInst *ins2)
if (MONO_TYPE_IS_PRIMITIVE (t2) || MONO_TYPE_ISSTRUCT (t2))
rel = CMP_NE;
} else if (MONO_TYPE_IS_PRIMITIVE (constraint1)) {
*vtype_constrained_gparam = TRUE;
if (MONO_TYPE_IS_PRIMITIVE (t2) && constraint1->type != t2->type)
rel = CMP_NE;
else if (MONO_TYPE_IS_REFERENCE (t2))
Expand Down Expand Up @@ -1879,7 +1880,8 @@ mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSign
}
} else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality") &&
args [0]->klass == mono_defaults.runtimetype_class && args [1]->klass == mono_defaults.runtimetype_class) {
CompRelation rel = get_rttype_ins_relation (args [0], args [1]);
gboolean vtype_constrained_gparam = FALSE;
CompRelation rel = get_rttype_ins_relation (args [0], args [1], &vtype_constrained_gparam);
if (rel == CMP_EQ) {
if (cfg->verbose_level > 2)
printf ("-> true\n");
Expand All @@ -1894,11 +1896,16 @@ mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSign
ins->dreg = alloc_preg (cfg);
ins->type = STACK_I4;
MONO_ADD_INS (cfg->cbb, ins);

/* Type checks in gshared methods like Vector<T>.IsSupported can not be optimized away if the type is T_BYTE etc. */
if (cfg->gshared && !cfg->gsharedvt && vtype_constrained_gparam)
cfg->prefer_instances = TRUE;
}
return ins;
} else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Inequality") &&
args [0]->klass == mono_defaults.runtimetype_class && args [1]->klass == mono_defaults.runtimetype_class) {
CompRelation rel = get_rttype_ins_relation (args [0], args [1]);
gboolean vtype_constrained_gparam = FALSE;
CompRelation rel = get_rttype_ins_relation (args [0], args [1], &vtype_constrained_gparam);
if (rel == CMP_NE) {
if (cfg->verbose_level > 2)
printf ("-> true\n");
Expand All @@ -1913,6 +1920,9 @@ mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSign
ins->dreg = alloc_preg (cfg);
ins->type = STACK_I4;
MONO_ADD_INS (cfg->cbb, ins);

if (cfg->gshared && !cfg->gsharedvt && vtype_constrained_gparam)
cfg->prefer_instances = TRUE;
}
return ins;
} else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "get_IsValueType") &&
Expand Down
7 changes: 4 additions & 3 deletions src/mono/mono/mini/simd-intrinsics.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1694,16 +1694,17 @@ emit_vector64_vector128_t (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSign

MonoClass *klass = cmethod->klass;
MonoType *etype = mono_class_get_context (klass)->class_inst->type_argv [0];

if (!MONO_TYPE_IS_VECTOR_PRIMITIVE (etype))
return NULL;

int size = mono_class_value_size (klass, NULL);
int esize = mono_class_value_size (mono_class_from_mono_type_internal (etype), NULL);
g_assert (size > 0);
g_assert (esize > 0);
int len = size / esize;
MonoTypeEnum arg0_type = fsig->param_count > 0 ? get_underlying_type (fsig->params [0]) : MONO_TYPE_VOID;

if (!MONO_TYPE_IS_VECTOR_PRIMITIVE (etype))
return NULL;

if (cfg->verbose_level > 1) {
char *name = mono_method_full_name (cmethod, TRUE);
printf (" SIMD intrinsic %s\n", name);
Expand Down