# RUN: llc -mtriple=hexagon -run-pass tfr-cleanup -o - %s | FileCheck %s

# Test coverage for HexagonTfrCleanup: exercise the 64-bit register
# immediate rewrite paths including the A2_combineii case and the
# A2_tfrpi case.

--- |
  define void @test_double_imm() { ret void }
  define void @test_combine_imm() { ret void }
  define void @test_self_copy() { ret void }
...

---
# Test: 64-bit register copy rewritten to A2_tfrpi when source holds
# a small immediate (fits in int8).
# CHECK-LABEL: name: test_double_imm
# CHECK: A2_tfrpi
name: test_double_imm
tracksRegLiveness: true
body: |
  bb.0:
    $r0 = A2_tfrsi 3
    $r1 = A2_tfrsi 0
    $d1 = A2_tfrp $d0
...

---
# Test: 64-bit register copy rewritten to A2_combineii when the source
# value has both halves fitting in int8 but the full value does not.
# CHECK-LABEL: name: test_combine_imm
# CHECK: A2_combineii
name: test_combine_imm
tracksRegLiveness: true
body: |
  bb.0:
    $r0 = A2_tfrsi 5
    $r1 = A2_tfrsi 7
    $d1 = A2_tfrp $d0
...

---
# Test: eraseIfRedundant - self-assignment A2_tfr should be removed.
# CHECK-LABEL: name: test_self_copy
# CHECK-NOT: A2_tfr $r0, $r0
name: test_self_copy
tracksRegLiveness: true
body: |
  bb.0:
    liveins: $r0
    $r0 = A2_tfr $r0
    J2_jumpr $r31, implicit-def dead $pc
...