1# RUN: llc -march=amdgcn -run-pass simple-register-coalescing -o - %s | FileCheck %s
2
3# Check that coalescer does not create wider register tuple than in source
4
5# CHECK:  - { id: 2, class: vreg_64, preferred-register: '' }
6# CHECK:  - { id: 3, class: vreg_64, preferred-register: '' }
7# CHECK:  - { id: 4, class: vreg_64, preferred-register: '' }
8# CHECK:  - { id: 5, class: vreg_96, preferred-register: '' }
9# CHECK:  - { id: 6, class: vreg_96, preferred-register: '' }
10# CHECK:  - { id: 7, class: vreg_128, preferred-register: '' }
11# CHECK:  - { id: 8, class: vreg_128, preferred-register: '' }
12# No more registers shall be defined
13# CHECK-NEXT: liveins:
14# CHECK:    FLAT_STORE_DWORDX2 $vgpr0_vgpr1, %4,
15# CHECK:    FLAT_STORE_DWORDX3 $vgpr0_vgpr1, %6,
16
17---
18name:            main
19alignment:       1
20exposesReturnsTwice: false
21legalized:       false
22regBankSelected: false
23selected:        false
24tracksRegLiveness: true
25registers:
26  - { id: 1, class: sreg_32_xm0, preferred-register: '%1' }
27  - { id: 2, class: vreg_64, preferred-register: '%2' }
28  - { id: 3, class: vreg_64 }
29  - { id: 4, class: vreg_64 }
30  - { id: 5, class: vreg_64 }
31  - { id: 6, class: vreg_96 }
32  - { id: 7, class: vreg_96 }
33  - { id: 8, class: vreg_128 }
34  - { id: 9, class: vreg_128 }
35liveins:
36  - { reg: '$sgpr6', virtual-reg: '%1' }
37frameInfo:
38  isFrameAddressTaken: false
39  isReturnAddressTaken: false
40  hasStackMap:     false
41  hasPatchPoint:   false
42  stackSize:       0
43  offsetAdjustment: 0
44  maxAlignment:    0
45  adjustsStack:    false
46  hasCalls:        false
47  maxCallFrameSize: 0
48  hasOpaqueSPAdjustment: false
49  hasVAStart:      false
50  hasMustTailInVarArgFunc: false
51body:             |
52  bb.0.entry:
53    liveins: $sgpr0, $vgpr0_vgpr1
54
55    %3 = IMPLICIT_DEF
56    undef %4.sub0 = COPY $sgpr0
57    %4.sub1 = COPY %3.sub0
58    undef %5.sub0 = COPY %4.sub1
59    %5.sub1 = COPY %4.sub0
60    FLAT_STORE_DWORDX2 $vgpr0_vgpr1, killed %5, 0, 0, 0, 0, implicit $exec, implicit $flat_scr
61
62    %6 = IMPLICIT_DEF
63    undef %7.sub0_sub1 = COPY %6
64    %7.sub2 = COPY %3.sub0
65    FLAT_STORE_DWORDX3 $vgpr0_vgpr1, killed %7, 0, 0, 0, 0, implicit $exec, implicit $flat_scr
66
67    %8 = IMPLICIT_DEF
68    undef %9.sub0_sub1_sub2 = COPY %8
69    %9.sub3 = COPY %3.sub0
70    FLAT_STORE_DWORDX4 $vgpr0_vgpr1, killed %9, 0, 0, 0, 0, implicit $exec, implicit $flat_scr
71...
72