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1# RUN: llc -mtriple=thumbv8 -run-pass=peephole-opt %s -o - | FileCheck %s2 3# Test case for PR 47980:4# Ensure that peephole optimization to fold move immediate doesn't unconstrain5# the register class of the consumer.6#7# Check that register class for %5 is unchanged as 'tcgpr'8# CHECK: { id: 5, class: tcgpr, preferred-register: '', flags: [ ] }9# CHECK: TCRETURNri killed %510 11--- |12 define i32 @foo(i32 %in) {13 ret i32 undef14 }15...16---17name: foo18registers:19 - { id: 0, class: gpr}20 - { id: 1, class: gpr }21 - { id: 2, class: rgpr }22 - { id: 3, class: gpr }23 - { id: 4, class: rgpr }24 - { id: 5, class: tcgpr }25liveins:26 - { reg: '$r0', virtual-reg: '%0' }27 - { reg: '$r1', virtual-reg: '%1' }28 - { reg: '$r2', virtual-reg: '%2' }29 - { reg: '$r3', virtual-reg: '%3' }30body: |31 bb.0 (%ir-block.0):32 liveins: $r0, $r1, $r2, $r333 %0 = COPY $r034 %1 = COPY $r135 %2 = COPY $r236 %3 = COPY $r337 38 %4 = t2MOVi32imm 27033739 %5 = t2ADDrr killed %2, killed %4, 14, $noreg, $noreg40 $r0 = COPY %041 $r1 = COPY %142 $r2 = COPY %243 $r3 = COPY %344 TCRETURNri killed %5, 0, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit $r345...46