1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
2 # RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -run-pass=postra-machine-sink -verify-machineinstrs -o - %s | FileCheck %s
4 # In the example, the ` $sgpr4 = COPY $sgpr2` was incorrectly sunk into bb.3. This happened because we did not update
5 # register uses when we found that `$sgpr2 = COPY $sgpr3` should not be sunk because of conflict with the successor's
6 # prologue instructions.
8 name: update_dependency_correctly
9 tracksRegLiveness: true
11 ; CHECK-LABEL: name: update_dependency_correctly
13 ; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
14 ; CHECK-NEXT: liveins: $sgpr0, $sgpr3, $sgpr2
16 ; CHECK-NEXT: $vgpr1 = IMPLICIT_DEF
17 ; CHECK-NEXT: renamable $sgpr4 = COPY $sgpr2
18 ; CHECK-NEXT: renamable $sgpr2 = COPY $sgpr3
19 ; CHECK-NEXT: $vgpr1 = SI_SPILL_S32_TO_VGPR $sgpr0, 0, $vgpr1
20 ; CHECK-NEXT: $sgpr1 = S_AND_SAVEEXEC_B32 $sgpr0, implicit-def $exec, implicit-def $scc, implicit $exec
21 ; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
22 ; CHECK-NEXT: S_BRANCH %bb.2
25 ; CHECK-NEXT: S_ENDPGM 0
28 ; CHECK-NEXT: successors: %bb.1(0x80000000)
29 ; CHECK-NEXT: liveins: $sgpr0, $sgpr2, $sgpr4, $vgpr1
31 ; CHECK-NEXT: $sgpr3 = SI_RESTORE_S32_FROM_VGPR $vgpr1, 0
32 ; CHECK-NEXT: renamable $sgpr0_sgpr1 = S_GETPC_B64_pseudo
33 ; CHECK-NEXT: renamable $sgpr5 = COPY $sgpr1
34 ; CHECK-NEXT: renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 32, 0
35 ; CHECK-NEXT: S_BRANCH %bb.1
37 successors: %bb.3(0x40000000), %bb.2(0x40000000)
38 liveins: $sgpr0, $sgpr3, $sgpr2
42 renamable $sgpr4 = COPY $sgpr2
43 renamable $sgpr2 = COPY $sgpr3
45 $vgpr1 = SI_SPILL_S32_TO_VGPR $sgpr0, 0, $vgpr1
47 $sgpr1 = S_AND_SAVEEXEC_B32 $sgpr0, implicit-def $exec, implicit-def $scc, implicit $exec
48 S_CBRANCH_EXECZ %bb.2, implicit $exec
55 successors: %bb.2(0x40000000)
56 liveins: $sgpr0, $sgpr2, $sgpr4, $vgpr1
58 $sgpr3 = SI_RESTORE_S32_FROM_VGPR $vgpr1, 0
60 renamable $sgpr0_sgpr1 = S_GETPC_B64_pseudo
61 renamable $sgpr5 = COPY $sgpr1
62 renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 32, 0