1# RUN: llc --mtriple=amdgcn--amdhsa -mcpu=fiji -verify-machineinstrs -run-pass si-fold-operands,si-shrink-instructions %s -o - | FileCheck %s 2# RUN: llc --mtriple=amdgcn--amdhsa -mcpu=fiji -verify-machineinstrs -passes si-fold-operands,si-shrink-instructions %s -o - | FileCheck %s 3--- | 4 define amdgpu_kernel void @test() #0 { 5 ret void 6 } 7 8 attributes #0 = { nounwind } 9 10... 11--- 12 13# This used to crash / trigger an assertion, because re-scanning the use list 14# after constant-folding the definition of %3 lead to the definition of %2 15# being processed twice. 16 17# CHECK-LABEL: name: test 18# CHECK: %2:vgpr_32 = V_LSHLREV_B32_e32 2, killed %0, implicit $exec 19# CHECK: %4:vgpr_32 = V_AND_B32_e32 8, killed %2, implicit $exec 20 21name: test 22tracksRegLiveness: true 23registers: 24 - { id: 0, class: vgpr_32 } 25 - { id: 1, class: sreg_32 } 26 - { id: 2, class: vgpr_32 } 27 - { id: 3, class: sreg_32 } 28 - { id: 4, class: vgpr_32 } 29 - { id: 5, class: sgpr_128 } 30body: | 31 bb.0 (%ir-block.0): 32 %0 = IMPLICIT_DEF 33 %1 = S_MOV_B32 2 34 %2 = V_LSHLREV_B32_e64 %1, killed %0, implicit $exec 35 %3 = S_LSHL_B32 %1, killed %1, implicit-def dead $scc 36 %4 = V_AND_B32_e64 killed %2, killed %3, implicit $exec 37 %5 = IMPLICIT_DEF 38 BUFFER_STORE_DWORD_OFFSET killed %4, killed %5, 0, 0, 0, 0, implicit $exec 39 S_ENDPGM 0 40 41... 42