Extend create-cores location-preservation test coverage to match documented synthesized ops

[Copilot]

The review flagged that test/create-cores/loc_preservation.mlir documented location checks for more synthesized ops than it actually asserted. This updates that test to align checks with the full op list described in the test intent.

• Problem summary

  • The test comment claimed location forwarding coverage for aie.tile, aie.mem, aie.core, aie.end, aie.flow, aie.dma_start, aie.dma_bd, aiex.useToken, and aie.next_bd, but FileCheck only covered a subset.

• Changes made

  • Expanded --aie-create-cores checks
    • Added FileCheck assertions for synthesized aie.tile, aie.mem, and aie.end locations.
    • Kept existing checks for aie.core and aie.buffer.
  • Expanded --aie-lower-memcpy checks
    • Added FileCheck assertions for synthesized aie.dma_start and aie.next_bd locations.
    • Kept existing checks for aie.flow, aie.dma_bd, and aiex.useToken.
  • Comment alignment
    • Updated nearby comment wording so the documented coverage matches enforced assertions.

• Example snippet

  // CHECK-DAG: aie.tile({{.*}}) loc(#[[CALLLOC:loc[0-9]*]])
  // CHECK-DAG: aie.mem({{.*}})
  // CHECK-DAG: aie.end loc(#[[CALLLOC]])
  
  // CHECK-DAG: aie.dma_start({{.*}}) loc(#[[MCLOC]])
  // CHECK-DAG: aie.next_bd {{.*}} loc(#[[MCLOC]])

[fifield]

wrong branch