llvm/llvm/test/CodeGen/AMDGPU/branch-folder-requires-no-phis.mir

# REQUIRES: asserts
# RUN: not --crash llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -run-pass=branch-folder -o /dev/null %s 2>&1 | FileCheck %s

# BranchFolding breaks this function due to phis

# CHECK: MachineFunctionProperties required by Control Flow Optimizer pass are not met by function func.
# CHECK-NEXT: Required properties: NoPHIs
# CHECK-NEXT: Current properties: IsSSA, TracksLiveness{{$}}
---
name:            func
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16

    %0:sreg_32_xm0_xexec = IMPLICIT_DEF
    %1:sreg_64 = IMPLICIT_DEF

  bb.1:
    S_CBRANCH_EXECZ %bb.3, implicit $exec
    S_BRANCH %bb.2

  bb.2:
    %3:sreg_64 = IMPLICIT_DEF
    S_BRANCH %bb.4

  bb.3:
    %4:sreg_64 = PHI undef %1, %bb.1, undef %3, %bb.4
    S_CBRANCH_EXECNZ %bb.5, implicit $exec

  bb.4:
    S_BRANCH %bb.3

  bb.5:

...