diff --git a/src/asahi/compiler/agx_register_allocate.c b/src/asahi/compiler/agx_register_allocate.c
index 4ac3db81f61..a2fbc07065d 100644
--- a/src/asahi/compiler/agx_register_allocate.c
+++ b/src/asahi/compiler/agx_register_allocate.c
@@ -226,6 +226,20 @@ pick_regs(struct ra_ctx *rctx, agx_instr *I, unsigned d)
          if (!BITSET_TEST_RANGE(rctx->used_regs, our_reg, our_reg + align - 1))
             return our_reg;
       }
+
+      /* Try to respect the alignment requirement of the collect destination,
+       * which may be greater than the sources (e.g. pack_64_2x32_split). Look
+       * for a register for the source such that the collect base is aligned.
+       */
+      unsigned collect_align = agx_size_align_16(collect->dest[0].size);
+      if (collect_align > align) {
+         unsigned offset = our_source * align;
+
+         for (unsigned reg = offset; reg < rctx->bound; reg += collect_align) {
+            if (!BITSET_TEST_RANGE(rctx->used_regs, reg, reg + count - 1))
+               return reg;
+         }
+      }
    }
 
    /* Default to any contiguous sequence of registers */