test/CodeGen/PowerPC/livephysregs.mir

# RUN: llc -o - %s -mtriple=powerpc64le--linux-gnu -run-pass=branch-folder | FileCheck %s
# The branch-folder should merge bb.1 and bb.5 below and therefore recalculate
# the liveins list of the merged block. This test is checking whether this
# recalculated list if okay and contains all the non-saved and saved CSRs.
# CHECK-LABEL: name: func
# CHECK: bb.3:
# CHECK-NEXT: liveins: %x30, %x29, %x3, %x6
# CHECK: %x4 = RLDICR killed %x6, 16, 47
# CHECK: %x3 = OR8 killed %x4, killed %x3
# CHECK: BLR8 implicit %lr8, implicit %rm, implicit %x3
---
name: func
tracksRegLiveness: true
fixedStack:      
  - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '%x30' }
  - { id: 1, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '%x29' }
  - { id: 2, offset: -8, size: 8, alignment: 8, isImmutable: true, isAliased: false }
body: |
  bb.0:
    liveins: %x3, %x5, %x29, %x30
  
    %x6 = RLWINM8 %x3, 16, 16, 31
    %x3 = RLDICL killed %x3, 0, 48
    BC undef %cr5lt, %bb.3
  
  bb.1:
    liveins: %x3, %x6, %x29, %x30
  
    %x4 = RLDICR killed %x6, 16, 47
    %x3 = OR8 killed %x4, killed %x3
    BLR8 implicit %lr8, implicit %rm, implicit %x3
  
  bb.3:
    liveins: %x3, %x5, %x6, %x29, %x30

    dead %x5 = ADD8 %x5, %x6
    BC undef %cr5lt, %bb.1

  bb.6:
    liveins: %x3, %x6, %x29, %x30
    STD killed %x29, -24, %x1 :: (store 8 into %fixed-stack.1)
    STD killed %x30, -16, %x1 :: (store 8 into %fixed-stack.0, align 16)
    NOP implicit-def dead %x29
    NOP implicit-def dead %x30

    %x30 = LD -16, %x1 :: (load 8 from %fixed-stack.0, align 16)
    %x29 = LD -24, %x1 :: (load 8 from %fixed-stack.1)
  
    %x4 = RLDICR killed %x6, 16, 47
    %x3 = OR8 killed %x4, killed %x3
    BLR8 implicit %lr8, implicit %rm, implicit %x3 
...