llvm/test/CodeGen/SystemZ/misched-prera-cmp-elim.mir

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

# Schedule the NRK that defines the compare source low to help comparison
# elimination.
# CHECK:      ********** MI Scheduling **********
# CHECK-NEXT: fun0:%bb.0
# CHECK:      ********** MI Scheduling **********
# CHECK-NEXT: fun0:%bb.1
# CHECK:      Queue BotQ.A: 6 4
# CHECK-NEXT:   Cand SU(6) FIRST
# CHECK-NEXT:   Cand SU(4) WEAK
# CHECK-NEXT: Pick Bot WEAK       [pre-RA]
# CHECK-NEXT: Scheduling SU(4) %7:gr32bit = NRK %6:gr32bit, %0:gr32bit, implicit-def dead $cc
# CHECK:      *** Final schedule for %bb.1 ***
# CHECK-NEXT: SU(0):   %5:gr32bit = NRK %2:gr32bit, %0:gr32bit, implicit-def dead $cc
# CHECK-NEXT: SU(1):   CHIMux %5:gr32bit, 0, implicit-def $cc
# CHECK-NEXT: SU(2):   %6:gr32bit = LHIMux 0
# CHECK-NEXT: SU(3):   %6:gr32bit = LOCHIMux %6:gr32bit(tied-def 0), 1, 14, 8, implicit $cc
# CHECK-NEXT: SU(5):   %3:addr32bit = OILMux %3:addr32bit(tied-def 0), 1, implicit-def dead $cc
# CHECK-NEXT: SU(6):   %8:gr32bit = SLLK %1:gr32bit, %3:addr32bit, 0
# CHECK-NEXT: SU(4):   %7:gr32bit = NRK %6:gr32bit, %0:gr32bit, implicit-def dead $cc
# CHECK-NEXT: SU(7):   CHIMux %7:gr32bit, 0, implicit-def $cc
# CHECK-NEXT: SU(8):   %8:gr32bit = LOCHIMux %8:gr32bit(tied-def 0), 0, 14, 8, implicit $cc
# CHECK-NEXT: SU(9):   %4:gr32bit = ORK %8:gr32bit, %4:gr32bit, implicit-def dead $cc
# CHECK-NEXT: SU(10):  %2:gr32bit = LHIMux 1
# CHECK-NEXT: SU(11):  %3:addr32bit = LHIMux 0
---
name:            fun0
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $r2l

    %0:gr32bit = COPY $r2l
    %1:gr32bit = LHIMux 1
    %2:gr32bit = LHIMux 0
    %3:addr32bit = LHIMux 1
    %4:gr32bit = LHIMux 0

  bb.1:
    %5:gr32bit = NRK %2, %0, implicit-def dead $cc
    CHIMux %5, 0, implicit-def $cc
    %6:gr32bit = LHIMux 0
    %6:gr32bit = LOCHIMux %6, 1, 14, 8, implicit killed $cc
    %7:gr32bit = NRK %6, %0, implicit-def dead $cc
    %3:addr32bit = OILMux %3, 1, implicit-def dead $cc
    %8:gr32bit = SLLK %1, %3, 0
    CHIMux %7, 0, implicit-def $cc
    %8:gr32bit = LOCHIMux %8, 0, 14, 8, implicit killed $cc
    %4:gr32bit = ORK %8, %4, implicit-def dead $cc
    %2:gr32bit = LHIMux 1
    %3:addr32bit = LHIMux 0
    J %bb.1
...