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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn -mcpu=gfx908 -run-pass=machine-scheduler -verify-misched -o - %s | FileCheck %s
# This would hang after removing edges from the SCHED_BARRIER since the number
# of Preds/Succs would be left in an inconsistent state.
---
name: sched_barrier_cluster_dep_hang
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: sched_barrier_cluster_dep_hang
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec_xnull = IMPLICIT_DEF
; CHECK-NEXT: [[DEF1:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: SCHED_BARRIER 128
; CHECK-NEXT: [[GLOBAL_LOAD_DWORD_SADDR:%[0-9]+]]:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR [[DEF]], [[DEF1]], 512, 0, implicit $exec :: (load (s32))
; CHECK-NEXT: [[GLOBAL_LOAD_DWORD_SADDR1:%[0-9]+]]:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR [[DEF]], [[DEF1]], 0, 0, implicit $exec :: (load (s32))
; CHECK-NEXT: SCHED_BARRIER 128
; CHECK-NEXT: [[V_MUL_LO_U32_e64_:%[0-9]+]]:vgpr_32 = nsw V_MUL_LO_U32_e64 [[GLOBAL_LOAD_DWORD_SADDR]], [[GLOBAL_LOAD_DWORD_SADDR]], implicit $exec
; CHECK-NEXT: [[V_MUL_LO_U32_e64_1:%[0-9]+]]:vgpr_32 = nsw V_MUL_LO_U32_e64 [[GLOBAL_LOAD_DWORD_SADDR1]], [[GLOBAL_LOAD_DWORD_SADDR1]], implicit $exec
; CHECK-NEXT: GLOBAL_STORE_DWORD_SADDR [[DEF1]], [[V_MUL_LO_U32_e64_]], [[DEF]], 512, 0, implicit $exec :: (store (s32))
; CHECK-NEXT: GLOBAL_STORE_DWORD_SADDR [[DEF1]], [[V_MUL_LO_U32_e64_1]], [[DEF]], 0, 0, implicit $exec :: (store (s32))
; CHECK-NEXT: S_ENDPGM 0
bb.0:
%0:sreg_64_xexec_xnull = IMPLICIT_DEF
%1:vgpr_32 = IMPLICIT_DEF
bb.1:
SCHED_BARRIER 128
%3:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR %0, %1, 0, 0, implicit $exec :: (load (s32))
%5:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR %0, %1, 512, 0, implicit $exec :: (load (s32))
SCHED_BARRIER 128
%6:vgpr_32 = nsw V_MUL_LO_U32_e64 %5, %5, implicit $exec
%4:vgpr_32 = nsw V_MUL_LO_U32_e64 %3, %3, implicit $exec
GLOBAL_STORE_DWORD_SADDR %1, %6, %0, 512, 0, implicit $exec :: (store (s32))
GLOBAL_STORE_DWORD_SADDR %1, %4, %0, 0, 0, implicit $exec :: (store (s32))
S_ENDPGM 0
...
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