# RUN: llc -o - %s -mtriple=s390x-linux-gnu -mcpu=z16 -verify-machineinstrs \
# RUN:   -run-pass=machine-scheduler 2>&1 | FileCheck %s

# Respect the weak edge between the SLLK and CLFIMux. Only if the SLLK is scheduled
# below can the COPY be coalesced.
# CHECK:      name: fun0
# CHECK:      CLFIMux %0, 0, implicit-def $cc
# CHECK-NEXT: %1:gr32bit = SLLK %0, $noreg, 1
# CHECK-NEXT: %0:gr32bit = COPY %1
# CHECK-NEXT: BRC 14, 10, %bb.1, implicit killed $cc
---
name:            fun0
tracksRegLiveness: true
body:             |
  bb.0:
    successors: %bb.1(0x80000000)
  
    %0:gr32bit = LHIMux 0
  
  bb.1:
    successors: %bb.2(0x04000000), %bb.1(0x7c000000)
  
    %1:gr32bit = SLLK %0, $noreg, 1
    CLFIMux %0, 0, implicit-def $cc
    %0:gr32bit = COPY %1
    BRC 14, 10, %bb.1, implicit killed $cc
    J %bb.2
  
  bb.2:
    Return
...