llvm/test/CodeGen/AArch64/GlobalISel/lifetime-marker-no-dce.mir

   1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
   2 # RUN: llc -mtriple aarch64 -run-pass=aarch64-prelegalizer-combiner -global-isel -verify-machineinstrs %s -o - | FileCheck %s
   3 # Check that we don't DCE the lifetime markers even though they don't have any users.
   4 ---
   5 name:            test_lifetime_no_dce
   6 alignment:       4
   7 tracksRegLiveness: true
   8 frameInfo:
   9   maxAlignment:    4
  10 stack:
  11   - { id: 0, size: 4, alignment: 4 }
  12 machineFunctionInfo: {}
  13 body:             |
  14   bb.1:
  15     ;%0:_(p0) = G_FRAME_INDEX %stack.0.slot
  16     ; CHECK-LABEL: name: test_lifetime_no_dce
  17     ; CHECK: LIFETIME_START %stack.0
  18     ; CHECK: LIFETIME_END %stack.0
  19     ; CHECK: RET_ReallyLR
  20     LIFETIME_START %stack.0
  21     LIFETIME_END %stack.0
  22     RET_ReallyLR
  23
  24 ...