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spirv: Use a single path for OpSpecConstantOp of OpVectorShuffle

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Now that nir_const_value is a scalar, there's no reason why we need
multiple paths here and it's just extra paths to keep working.  While
we're here, we also add a vtn_fail_if check that component indices are
in-bounds.

Reviewed-by: Karol Herbst <kherbst@redhat.com>
This commit is contained in:
Jason Ekstrand
2019-06-06 10:09:01 -05:00
parent 280e5442e5
commit 96bb9c9277
1 changed files with 20 additions and 38 deletions
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40
src/compiler/spirv/spirv_to_nir.c
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@@ -1793,48 +1793,30 @@ vtn_handle_constant(struct vtn_builder *b, SpvOp opcode,
vtn_assert(bit_size == bit_size0 && bit_size == bit_size1);
(void)bit_size0; (void)bit_size1;
if (bit_size == 64) {
uint64_t u64[8];
nir_const_value undef = { .u64 = 0xdeadbeefdeadbeef };
nir_const_value combined[NIR_MAX_VEC_COMPONENTS * 2];
if (v0->value_type == vtn_value_type_constant) {
for (unsigned i = 0; i < len0; i++)
u64[i] = v0->constant->values[0][i].u64;
combined[i] = v0->constant->values[0][i];
}
if (v1->value_type == vtn_value_type_constant) {
for (unsigned i = 0; i < len1; i++)
u64[len0 + i] = v1->constant->values[0][i].u64;
combined[len0 + i] = v1->constant->values[0][i];
}
for (unsigned i = 0, j = 0; i < count - 6; i++, j++) {
uint32_t comp = w[i + 6];
if (comp == (uint32_t)-1) {
/* If component is not used, set the value to a known constant
* to detect if it is wrongly used.
*/
if (comp == (uint32_t)-1)
val->constant->values[0][j].u64 = 0xdeadbeefdeadbeef;
else
val->constant->values[0][j].u64 = u64[comp];
}
val->constant->values[0][j] = undef;
} else {
/* This is for both 32-bit and 16-bit values */
uint32_t u32[8];
if (v0->value_type == vtn_value_type_constant) {
for (unsigned i = 0; i < len0; i++)
u32[i] = v0->constant->values[0][i].u32;
}
if (v1->value_type == vtn_value_type_constant) {
for (unsigned i = 0; i < len1; i++)
u32[len0 + i] = v1->constant->values[0][i].u32;
}
for (unsigned i = 0, j = 0; i < count - 6; i++, j++) {
uint32_t comp = w[i + 6];
/* If component is not used, set the value to a known constant
* to detect if it is wrongly used.
*/
if (comp == (uint32_t)-1)
val->constant->values[0][j].u32 = 0xdeadbeef;
else
val->constant->values[0][j].u32 = u32[comp];
vtn_fail_if(comp >= len0 + len1,
"All Component literals must either be FFFFFFFF "
"or in [0, N - 1] (inclusive).");
val->constant->values[0][j] = combined[comp];
}
}
break;