1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
# RUN: llc -start-before=prologepilog -stop-after=livedebugvalues -mattr=+sve -o - %s | FileCheck %s
#
# FIXME: re-enable this run line when InstrRef LiveDebugValues is able to
# rely on the target spill/restore inst recognisers.
# run: llc -start-before=prologepilog -stop-after=livedebugvalues -experimental-debug-variable-locations -mattr=+sve -o - %s | FileCheck %s
#
# Test that the LiveDebugValues pass can correctly handle the address
# of the SVE spill (at a scalable address location) which is expressed
# with a complex DIExpression.
#
# CHECK: $z2 = ORR_ZZZ killed $z1, $z1
# CHECK: $z1 = ORR_ZZZ killed $z0, $z0
# CHECK-DAG: ST1W_IMM renamable $z1, killed renamable $p{{[0-9]+}}, $fp, -[[#%u,OFFSET:]], debug-location !{{[0-9]+}} :: (store unknown-size into %stack.0, align 16)
# CHECK-DAG: DBG_VALUE $fp, 0, !{{[0-9]+}}, !DIExpression(DW_OP_constu, [[#mul(OFFSET,8)]], DW_OP_bregx, 46, 0, DW_OP_mul, DW_OP_minus),
#
# TODO: When LiveDebugValues pass supports reloads for AArch64, it should
# correctly recognize debug-value !27 is in $z1 after the following reload:
#
# CHECK: renamable $z1 = LD1W_IMM renamable $p0, $fp, -[[#OFFSET]], debug-location !34 :: (load unknown-size from %stack.0, align 16)
# CHECK-DAG: ST1W_IMM killed renamable $z3, killed renamable $p0, $fp, -[[#OFFSET]] :: (store unknown-size into %stack.0, align 16)
# CHECK-DAG: DBG_VALUE $noreg, $noreg, !27, !DIExpression(), debug-location !30
--- |
; ModuleID = 't.c'
source_filename = "t.c"
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-gnu"
; Function Attrs: nounwind
define dso_local <vscale x 8 x i32> @foo(<vscale x 4 x i32> %z0, <vscale x 4 x i32> %z1, i32 %c) local_unnamed_addr #0 !dbg !11 {
entry:
call void @llvm.dbg.value(metadata <vscale x 4 x i32> %z0, metadata !27, metadata !DIExpression()), !dbg !30
call void @llvm.dbg.value(metadata <vscale x 4 x i32> %z1, metadata !28, metadata !DIExpression()), !dbg !30
call void @llvm.dbg.value(metadata i32 %c, metadata !29, metadata !DIExpression()), !dbg !30
%tobool.not = icmp eq i32 %c, 0, !dbg !31
br i1 %tobool.not, label %if.end, label %if.then, !dbg !33
if.then: ; preds = %entry
%call = call <vscale x 8 x i32> @bar(<vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0, <vscale x 4 x i32> %z0) #0, !dbg !34
br label %return, !dbg !35
if.end: ; preds = %entry
%0 = call <vscale x 8 x i32> @llvm.aarch64.sve.tuple.create2.nxv8i32.nxv4i32(<vscale x 4 x i32> %z1, <vscale x 4 x i32> %z0), !dbg !36
br label %return, !dbg !37
return: ; preds = %if.end, %if.then
%retval.0 = phi <vscale x 8 x i32> [ %call, %if.then ], [ %0, %if.end ], !dbg !30
ret <vscale x 8 x i32> %retval.0, !dbg !38
}
declare !dbg !39 dso_local <vscale x 8 x i32> @bar(<vscale x 4 x i32>, <vscale x 4 x i32>, <vscale x 4 x i32>, <vscale x 4 x i32>, <vscale x 4 x i32>, <vscale x 4 x i32>, <vscale x 4 x i32>, <vscale x 4 x i32>, <vscale x 4 x i32>) local_unnamed_addr
; Function Attrs: nounwind readonly
declare <vscale x 8 x i32> @llvm.aarch64.sve.tuple.create2.nxv8i32.nxv4i32(<vscale x 4 x i32>, <vscale x 4 x i32>)
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { "frame-pointer"="non-leaf"}
attributes #1 = { readnone speculatable willreturn }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6, !7, !8, !9}
!llvm.ident = !{!10}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (https://github.com/llvm/llvm-project.git b19275ba870a06c5ef0428af6264ffd28c7cde9e)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "t.c", directory: "/tmp/")
!2 = !{}
!3 = !{i32 7, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{i32 1, !"branch-target-enforcement", i32 0}
!7 = !{i32 1, !"sign-return-address", i32 0}
!8 = !{i32 1, !"sign-return-address-all", i32 0}
!9 = !{i32 1, !"sign-return-address-with-bkey", i32 0}
!10 = !{!"clang version 12.0.0 (https://github.com/llvm/llvm-project.git b19275ba870a06c5ef0428af6264ffd28c7cde9e)"}
!11 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 6, type: !12, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !26)
!12 = !DISubroutineType(types: !13)
!13 = !{!14, !21, !21, !18}
!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "svint32x2_t", file: !15, line: 59, baseType: !16)
!15 = !DIFile(filename: "lib/clang/12.0.0/include/arm_sve.h", directory: "/tmp")
!16 = !DIDerivedType(tag: DW_TAG_typedef, name: "__clang_svint32x2_t", file: !1, baseType: !17)
!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !18, flags: DIFlagVector, elements: !19)
!18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!19 = !{!20}
!20 = !DISubrange(lowerBound: 0, upperBound: !DIExpression(DW_OP_constu, 4, DW_OP_bregx, 46, 0, DW_OP_mul, DW_OP_constu, 1, DW_OP_minus))
!21 = !DIDerivedType(tag: DW_TAG_typedef, name: "svint32_t", file: !15, line: 34, baseType: !22)
!22 = !DIDerivedType(tag: DW_TAG_typedef, name: "__SVInt32_t", file: !1, baseType: !23)
!23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !18, flags: DIFlagVector, elements: !24)
!24 = !{!25}
!25 = !DISubrange(lowerBound: 0, upperBound: !DIExpression(DW_OP_constu, 2, DW_OP_bregx, 46, 0, DW_OP_mul, DW_OP_constu, 1, DW_OP_minus))
!26 = !{!27, !28, !29}
!27 = !DILocalVariable(name: "z0", arg: 1, scope: !11, file: !1, line: 6, type: !21)
!28 = !DILocalVariable(name: "z1", arg: 2, scope: !11, file: !1, line: 6, type: !21)
!29 = !DILocalVariable(name: "c", arg: 3, scope: !11, file: !1, line: 6, type: !18)
!30 = !DILocation(line: 0, scope: !11)
!31 = !DILocation(line: 7, column: 7, scope: !32)
!32 = distinct !DILexicalBlock(scope: !11, file: !1, line: 7, column: 7)
!33 = !DILocation(line: 7, column: 7, scope: !11)
!34 = !DILocation(line: 8, column: 12, scope: !32)
!35 = !DILocation(line: 8, column: 5, scope: !32)
!36 = !DILocation(line: 9, column: 10, scope: !11)
!37 = !DILocation(line: 9, column: 3, scope: !11)
!38 = !DILocation(line: 10, column: 1, scope: !11)
!39 = !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !40, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!40 = !DISubroutineType(types: !41)
!41 = !{!17, !23, !23, !23, !23, !23, !23, !23, !23, !23}
...
---
name: foo
alignment: 4
tracksRegLiveness: true
liveins:
- { reg: '$z0' }
- { reg: '$z1' }
- { reg: '$w0' }
frameInfo:
maxAlignment: 16
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
savePoint: '%bb.1'
restorePoint: '%bb.1'
stack:
- { id: 0, size: 16, alignment: 16, stack-id: scalable-vector }
machineFunctionInfo: {}
body: |
bb.0.entry:
successors: %bb.2(0x30000000), %bb.1(0x50000000)
liveins: $w0, $z0, $z1
DBG_VALUE $z0, $noreg, !27, !DIExpression(), debug-location !30
DBG_VALUE $z1, $noreg, !28, !DIExpression(), debug-location !30
DBG_VALUE $w0, $noreg, !29, !DIExpression(), debug-location !30
renamable $z2 = COPY $z1
renamable $z1 = COPY $z0
DBG_VALUE $w0, $noreg, !29, !DIExpression(), debug-location !30
DBG_VALUE $z2, $noreg, !28, !DIExpression(), debug-location !30
DBG_VALUE $z1, $noreg, !27, !DIExpression(), debug-location !30
CBZW killed renamable $w0, %bb.2, debug-location !33
B %bb.1, debug-location !33
bb.1.if.then:
liveins: $z1
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp, debug-location !34
renamable $p0 = PTRUE_S 31, debug-location !34
$x0 = ADDXri %stack.0, 0, 0, debug-location !34
ST1W_IMM renamable $z1, killed renamable $p0, %stack.0, 0, debug-location !34 :: (store unknown-size into %stack.0, align 16)
$z0 = COPY renamable $z1, debug-location !34
$z2 = COPY renamable $z1, debug-location !34
$z3 = COPY renamable $z1, debug-location !34
$z4 = COPY renamable $z1, debug-location !34
$z5 = COPY renamable $z1, debug-location !34
$z6 = COPY renamable $z1, debug-location !34
$z7 = COPY renamable $z1, debug-location !34
BL @bar, csr_aarch64_sve_aapcs, implicit-def dead $lr, implicit $sp, implicit $z0, implicit $z1, implicit $z2, implicit $z3, implicit $z4, implicit $z5, implicit $z6, implicit $z7, implicit $x0, implicit-def $sp, implicit-def $z0, implicit-def $z1, debug-location !34
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp, debug-location !34
renamable $p0 = PTRUE_S 31, debug-location !34
$z3 = IMPLICIT_DEF
renamable $z1 = LD1W_IMM renamable $p0, %stack.0, 0, debug-location !34 :: (load unknown-size from %stack.0, align 16)
ST1W_IMM renamable $z3, killed renamable $p0, %stack.0, 0 :: (store unknown-size into %stack.0, align 16)
renamable $z2 = COPY $z0, debug-location !34
B %bb.3, debug-location !35
bb.2.if.end:
liveins: $z1, $z2
bb.3.return:
liveins: $z1, $z2
$z0 = COPY killed renamable $z2, debug-location !38
RET_ReallyLR implicit $z0, implicit $z1, debug-location !38
...
|
