1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -verify-machineinstrs  -run-pass=machine-scheduler -verify-misched -o - %s | FileCheck %s
3
4# This would assert that a dead def should have no uses, but the dead
5# def and use have different subreg indices.
6
7---
8name:            multi_def_dead_reg_subreg_check
9tracksRegLiveness: true
10machineFunctionInfo:
11  isEntryFunction: true
12  scratchRSrcReg:  '$sgpr24_sgpr25_sgpr26_sgpr27'
13  frameOffsetReg:  '$sgpr32'
14  stackPtrOffsetReg: '$sgpr32'
15  argumentInfo:
16    privateSegmentBuffer: { reg: '$sgpr0_sgpr1_sgpr2_sgpr3' }
17    privateSegmentWaveByteOffset: { reg: '$sgpr33' }
18body:             |
19  ; CHECK-LABEL: name: multi_def_dead_reg_subreg_check
20  ; CHECK: bb.0:
21  ; CHECK:   successors: %bb.1(0x80000000)
22  ; CHECK:   liveins: $sgpr6_sgpr7
23  ; CHECK:   undef %0.sub3:vreg_512 = V_MOV_B32_e32 0, implicit $exec
24  ; CHECK:   [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
25  ; CHECK:   [[V_ADD_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_U32_e32 0, [[V_MOV_B32_e32_]], implicit $exec
26  ; CHECK:   [[V_MOV_B32_e32_1:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
27  ; CHECK:   [[COPY:%[0-9]+]]:vreg_512 = COPY %0
28  ; CHECK: bb.1:
29  ; CHECK:   successors: %bb.1(0x80000000)
30  ; CHECK:   BUFFER_STORE_DWORD_OFFEN %0.sub3, undef %5:vgpr_32, $sgpr24_sgpr25_sgpr26_sgpr27, $sgpr32, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 4, align 8, addrspace 5)
31  ; CHECK:   dead %6:vgpr_32 = DS_READ_B32_gfx9 undef %7:vgpr_32, 0, 0, implicit $exec
32  ; CHECK:   dead %8:vreg_64 = DS_READ_B64_gfx9 [[V_MOV_B32_e32_]], 0, 0, implicit $exec
33  ; CHECK:   dead %9:vreg_128 = DS_READ_B128_gfx9 [[V_ADD_U32_e32_]], 0, 0, implicit $exec
34  ; CHECK:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
35  ; CHECK:   undef %11.sub1:vreg_512 = COPY [[COPY]].sub1
36  ; CHECK:   INLINEASM &"", 1 /* sideeffect attdialect */, 851978 /* regdef:VGPR_LO16 */, def dead [[COPY1]], 851978 /* regdef:VGPR_LO16 */, def dead [[COPY]].sub1, 2147483657 /* reguse tiedto:$0 */, [[COPY1]], 2147549193 /* reguse tiedto:$1 */, [[COPY]].sub1
37  ; CHECK:   %11.sub0:vreg_512 = COPY [[COPY]].sub0
38  ; CHECK:   %11.sub3:vreg_512 = COPY [[COPY]].sub3
39  ; CHECK:   %11.sub2:vreg_512 = COPY undef [[V_MOV_B32_e32_]]
40  ; CHECK:   %11.sub5:vreg_512 = COPY undef [[V_MOV_B32_e32_]]
41  ; CHECK:   [[COPY2:%[0-9]+]]:vreg_512 = COPY %11
42  ; CHECK:   dead %10:vgpr_32 = V_ADD_CO_U32_e32 4, [[V_MOV_B32_e32_1]], implicit-def dead $vcc, implicit $exec
43  ; CHECK:   S_BRANCH %bb.1
44  bb.0:
45    liveins: $sgpr6_sgpr7
46
47    undef %0.sub3:vreg_512 = V_MOV_B32_e32 0, implicit $exec
48    %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
49    %2:vgpr_32 = V_ADD_U32_e32 0, %1, implicit $exec
50    %3:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
51    %4:vreg_512 = COPY %0
52
53  bb.1:
54    BUFFER_STORE_DWORD_OFFEN %0.sub3, undef %5:vgpr_32, $sgpr24_sgpr25_sgpr26_sgpr27, $sgpr32, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 4, align 8, addrspace 5)
55    %6:vgpr_32 = DS_READ_B32_gfx9 undef %7:vgpr_32, 0, 0, implicit $exec
56    %8:vreg_64 = DS_READ_B64_gfx9 %1, 0, 0, implicit $exec
57    %9:vreg_128 = DS_READ_B128_gfx9 %2, 0, 0, implicit $exec
58    %10:vgpr_32 = V_ADD_CO_U32_e32 4, %3, implicit-def dead $vcc, implicit $exec
59    undef %11.sub0:vreg_512 = COPY %4.sub0
60    %12:vgpr_32 = COPY %4.sub0
61    %11.sub1:vreg_512 = COPY %4.sub1
62    INLINEASM &"", 1, 851978, def dead %12, 851978, def dead %4.sub1, 2147483657, %12, 2147549193, %4.sub1
63    %11.sub2:vreg_512 = COPY undef %1
64    %11.sub3:vreg_512 = COPY %4.sub3
65    %11.sub5:vreg_512 = COPY undef %1
66    %4:vreg_512 = COPY %11
67    S_BRANCH %bb.1
68
69...
70