ir3: indicate possible dword straddle for any multi-component pvtmem access

When filling out ir3_info, any multi-component stp or ldp instruction
should indicate possible straddle across dword boundaries. This indirectly
prevents setting the PERWAVEMEMLAYOUT flag on the SP_VS_PVT_MEM_SIZE
register, enabling proper functioning of three-component 8-bit accesses
with natural alignment.

Signed-off-by: Zan Dobersek <zdobersek@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29875>

src/freedreno/ir3/ir3.c

@@ -315,9 +315,12 @@ ir3_collect_info(struct ir3_shader_variant *v)
 
          if ((instr->opc == OPC_STP || instr->opc == OPC_LDP)) {
             unsigned components = instr->srcs[2]->uim_val;
-            if (components * type_size(instr->cat6.type) > 32) {
+
+            /* This covers any multi-component access that could straddle
+             * across multiple double-words.
+             */
+            if (components > 1)
                info->multi_dword_ldp_stp = true;
-            }
 
             if (instr->opc == OPC_STP)
                info->stp_count += components;