1# RUN: llc --mtriple=amdgcn--amdhsa -mcpu=fiji -verify-machineinstrs -run-pass si-fold-operands,si-shrink-instructions %s -o - | FileCheck %s
2--- |
3  define amdgpu_kernel void @test() #0 {
4    ret void
5  }
6
7  attributes #0 = { nounwind }
8
9...
10---
11
12# This used to crash / trigger an assertion, because re-scanning the use list
13# after constant-folding the definition of %3 lead to the definition of %2
14# being processed twice.
15
16# CHECK-LABEL: name: test
17# CHECK: %2:vgpr_32 = V_LSHLREV_B32_e32 2, killed %0, implicit $exec
18# CHECK: %4:vgpr_32 = V_AND_B32_e32 8, killed %2, implicit $exec
19
20name:            test
21tracksRegLiveness: true
22registers:
23  - { id: 0, class: vgpr_32 }
24  - { id: 1, class: sreg_32 }
25  - { id: 2, class: vgpr_32 }
26  - { id: 3, class: sreg_32 }
27  - { id: 4, class: vgpr_32 }
28  - { id: 5, class: sreg_128 }
29body:             |
30  bb.0 (%ir-block.0):
31    %0 = IMPLICIT_DEF
32    %1 = S_MOV_B32 2
33    %2 = V_LSHLREV_B32_e64 %1, killed %0, implicit $exec
34    %3 = S_LSHL_B32 %1, killed %1, implicit-def dead $scc
35    %4 = V_AND_B32_e64 killed %2, killed %3, implicit $exec
36    %5 = IMPLICIT_DEF
37    BUFFER_STORE_DWORD_OFFSET killed %4, killed %5, 0, 0, 0, 0, 0, implicit $exec
38    S_ENDPGM
39
40...
41