1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2 # RUN: llc -mtriple=amdgcn -mcpu=gfx908 -run-pass=machine-scheduler -verify-misched -o - %s | FileCheck %s
4 # This would hang after removing edges from the SCHED_BARRIER since the number
5 # of Preds/Succs would be left in an inconsistent state.
8 name: sched_barrier_cluster_dep_hang
9 tracksRegLiveness: true
11 ; CHECK-LABEL: name: sched_barrier_cluster_dep_hang
13 ; CHECK-NEXT: successors: %bb.1(0x80000000)
15 ; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec_xnull = IMPLICIT_DEF
16 ; CHECK-NEXT: [[DEF1:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
19 ; CHECK-NEXT: SCHED_BARRIER 128
20 ; CHECK-NEXT: [[GLOBAL_LOAD_DWORD_SADDR:%[0-9]+]]:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR [[DEF]], [[DEF1]], 512, 0, implicit $exec :: (load (s32))
21 ; CHECK-NEXT: [[GLOBAL_LOAD_DWORD_SADDR1:%[0-9]+]]:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR [[DEF]], [[DEF1]], 0, 0, implicit $exec :: (load (s32))
22 ; CHECK-NEXT: SCHED_BARRIER 128
23 ; 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
24 ; 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
25 ; CHECK-NEXT: GLOBAL_STORE_DWORD_SADDR [[DEF1]], [[V_MUL_LO_U32_e64_]], [[DEF]], 512, 0, implicit $exec :: (store (s32))
26 ; CHECK-NEXT: GLOBAL_STORE_DWORD_SADDR [[DEF1]], [[V_MUL_LO_U32_e64_1]], [[DEF]], 0, 0, implicit $exec :: (store (s32))
27 ; CHECK-NEXT: S_ENDPGM 0
29 %0:sreg_64_xexec_xnull = IMPLICIT_DEF
30 %1:vgpr_32 = IMPLICIT_DEF
34 %3:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR %0, %1, 0, 0, implicit $exec :: (load (s32))
35 %5:vgpr_32 = GLOBAL_LOAD_DWORD_SADDR %0, %1, 512, 0, implicit $exec :: (load (s32))
37 %6:vgpr_32 = nsw V_MUL_LO_U32_e64 %5, %5, implicit $exec
38 %4:vgpr_32 = nsw V_MUL_LO_U32_e64 %3, %3, implicit $exec
39 GLOBAL_STORE_DWORD_SADDR %1, %6, %0, 512, 0, implicit $exec :: (store (s32))
40 GLOBAL_STORE_DWORD_SADDR %1, %4, %0, 0, 0, implicit $exec :: (store (s32))