llvm-project/llvm/test/CodeGen/SystemZ/misched-readadvances.mir

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# Check that the extra operand for the full register added by RegAlloc does
# not have a latency that interferes with the latency adjustment
# (ReadAdvance) for the MSY register operand.
# RUN: llc %s -mtriple=s390x-linux-gnu -mcpu=z13 -start-before=machine-scheduler \
# RUN: -debug-only=machine-scheduler -o - 2>&1 | FileCheck %s
# REQUIRES: asserts
# CHECK: ScheduleDAGMI::schedule starting
# CHECK: SU(4): renamable $r2l = MSR renamable $r2l(tied-def 0), renamable $r2l
# CHECK: Latency : 6
# CHECK: SU(5): renamable $r2l = MSY renamable $r2l(tied-def 0), renamable $r1d, -4, $noreg, implicit $r2d
# CHECK: Predecessors:
# CHECK: SU(4): Data Latency=2 Reg=$r2l
# CHECK: SU(4): Data Latency=0 Reg=$r2d
---
name: Perl_do_sv_dump
alignment: 4
tracksRegLiveness: true
body: |
bb.0 :
%1:addr64bit = IMPLICIT_DEF
%2:addr64bit = IMPLICIT_DEF
%3:vr64bit = IMPLICIT_DEF
bb.1 :
%2:addr64bit = ALGFI %2, 4294967291, implicit-def dead $cc
%2.subreg_l32:addr64bit = MSR %2.subreg_l32, %2.subreg_l32
%2.subreg_l32:addr64bit = MSY %2.subreg_l32, %1, -4, $noreg
...