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-rw-r--r--src/gallium/drivers/vc4/vc4_register_allocate.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/src/gallium/drivers/vc4/vc4_register_allocate.c b/src/gallium/drivers/vc4/vc4_register_allocate.c
index 58d812bce8a..93013147d49 100644
--- a/src/gallium/drivers/vc4/vc4_register_allocate.c
+++ b/src/gallium/drivers/vc4/vc4_register_allocate.c
@@ -279,7 +279,21 @@ vc4_register_allocate(struct vc4_context *vc4, struct vc4_compile *c)
}
if (qir_src_needs_a_file(inst)) {
- class_bits[inst->src[0].index] &= CLASS_BIT_A;
+ switch (inst->op) {
+ case QOP_UNPACK_8A_F:
+ case QOP_UNPACK_8B_F:
+ case QOP_UNPACK_8C_F:
+ case QOP_UNPACK_8D_F:
+ /* Special case: these can be done as R4
+ * unpacks, as well.
+ */
+ class_bits[inst->src[0].index] &= (CLASS_BIT_A |
+ CLASS_BIT_R4);
+ break;
+ default:
+ class_bits[inst->src[0].index] &= CLASS_BIT_A;
+ break;
+ }
}
ip++;
}