1# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -stress-regalloc=3 -start-before=greedy -stop-after=stack-slot-coloring -o - %s | FileCheck -check-prefixes=SHARE,GCN %s
2# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -stress-regalloc=3 -start-before=greedy -stop-after=stack-slot-coloring -no-stack-slot-sharing -o - %s | FileCheck -check-prefixes=NOSHARE,GCN %s
3
4# Make sure that stack slot coloring doesn't try to merge frame
5# indexes used for SGPR spilling with those that aren't.
6# Even when stack slot sharing was disabled, it was still moving the
7# FI ID used for an SGPR spill to a normal frame index.
8
9--- |
10
11  define void @sgpr_spill_wrong_stack_id(float addrspace(1)* nocapture readnone %arg, float addrspace(1)* noalias %arg1) {
12  bb:
13    %tmp = load i32, i32 addrspace(1)* null, align 4
14    call void @func(i32 undef)
15    call void @func(i32 %tmp)
16    unreachable
17  }
18
19  declare void @func(i32)
20
21...
22---
23
24# GCN-LABEL: name:            sgpr_spill_wrong_stack_id
25# SHARE: stack:
26# SHARE:   - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
27# SHARE:       stack-id: default, callee-saved-register: '', callee-saved-restored: true,
28# SHARE:       debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
29# SHARE:   - { id: 1, name: '', type: spill-slot, offset: 0, size: 8, alignment: 4,
30# SHARE:       stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
31# SHARE:       debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
32# SHARE:   - { id: 2, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
33# SHARE:       stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
34# SHARE:       debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
35
36# SHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.2, implicit $exec, implicit $sgpr32 :: (store 4 into %stack.2, addrspace 5)
37# SHARE: SI_SPILL_V32_SAVE killed $vgpr0, %stack.0, $sgpr32, 0, implicit $exec :: (store 4 into %stack.0, addrspace 5)
38# SHARE: SI_SPILL_S64_SAVE killed renamable $sgpr4_sgpr5, %stack.1, implicit $exec, implicit $sgpr32 :: (store 8 into %stack.1, align 4, addrspace 5)
39# SHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load 8 from %stack.1, align 4, addrspace 5)
40# SHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu_highregs, implicit undef $vgpr0
41# SHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load 4 from %stack.2, addrspace 5)
42# SHARE: $vgpr0 = SI_SPILL_V32_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load 4 from %stack.0, addrspace 5)
43# SHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load 8 from %stack.1, align 4, addrspace 5)
44# SHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu_highregs, implicit $vgpr0
45# SHARE:  $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load 4 from %stack.2, addrspace 5)
46
47# NOSHARE: stack:
48# NOSHARE: - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
49# NOSHARE: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
50# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
51# NOSHARE: - { id: 1, name: '', type: spill-slot, offset: 0, size: 8, alignment: 4,
52# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
53# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
54# NOSHARE: - { id: 2, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
55# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
56# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
57# NOSHARE: - { id: 3, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
58# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
59# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
60
61# NOSHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.2, implicit $exec, implicit $sgpr32 :: (store 4 into %stack.2, addrspace 5)
62# NOSHARE: SI_SPILL_V32_SAVE killed $vgpr0, %stack.0, $sgpr32, 0, implicit $exec :: (store 4 into %stack.0, addrspace 5)
63# NOSHARE: SI_SPILL_S64_SAVE killed renamable $sgpr4_sgpr5, %stack.1, implicit $exec, implicit $sgpr32 :: (store 8 into %stack.1, align 4, addrspace 5)
64# NOSHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load 8 from %stack.1, align 4, addrspace 5)
65# NOSHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu_highregs, implicit undef $vgpr0
66# NOSHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load 4 from %stack.2, addrspace 5)
67# NOSHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.3, implicit $exec, implicit $sgpr32 :: (store 4 into %stack.3, addrspace 5)
68# NOSHARE: $vgpr0 = SI_SPILL_V32_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load 4 from %stack.0, addrspace 5)
69# NOSHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load 8 from %stack.1, align 4, addrspace 5)
70# NOSHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu_highregs, implicit $vgpr0
71# NOSHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.3, implicit $exec, implicit $sgpr32 :: (load 4 from %stack.3, addrspace 5)
72
73...
74
75name:            sgpr_spill_wrong_stack_id
76tracksRegLiveness: true
77frameInfo:
78  hasCalls:        true
79machineFunctionInfo:
80  scratchRSrcReg: $sgpr0_sgpr1_sgpr2_sgpr3
81  frameOffsetReg: $sgpr32
82  stackPtrOffsetReg: $sgpr32
83body:             |
84  bb.0:
85    %0:sreg_32_xm0 = COPY $sgpr32
86    %1:vreg_64 = IMPLICIT_DEF
87    %2:vgpr_32 = FLAT_LOAD_DWORD %1, 0, 0, 0, 0, implicit $exec, implicit $flat_scr
88    %3:sreg_64 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @func + 4, target-flags(amdgpu-rel32-hi) @func + 4, implicit-def dead $scc
89    ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
90    dead $sgpr30_sgpr31 = SI_CALL %3, @func, csr_amdgpu_highregs, implicit undef $vgpr0
91    $sgpr32 = COPY %0
92    %4:sreg_32_xm0 = COPY $sgpr32
93    ADJCALLSTACKDOWN 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
94    ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
95    $vgpr0 = COPY %2
96    dead $sgpr30_sgpr31 = SI_CALL %3, @func, csr_amdgpu_highregs, implicit killed $vgpr0
97    $sgpr32 = COPY %4
98    ADJCALLSTACKDOWN 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
99
100...
101