1 ; RUN: opt -O2 %s | llvm-dis > %t1
2 ; RUN: llc -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK,CHECK-ALU64 %s
3 ; RUN: llc -mattr=+alu32 -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK,CHECK-ALU32 %s
5 ; typedef unsigned __uint;
6 ; struct s1 { int a1; __uint a2:9; __uint a3:4; };
7 ; union u1 { int b1; __uint b2:9; __uint b3:4; };
8 ; enum { FIELD_EXISTENCE = 2, };
9 ; int test(struct s1 *arg1, union u1 *arg2) {
10 ; unsigned r1 = __builtin_preserve_field_info(arg1->a1, FIELD_EXISTENCE);
11 ; unsigned r2 = __builtin_preserve_field_info(arg1->a3, FIELD_EXISTENCE);
12 ; unsigned r3 = __builtin_preserve_field_info(arg2->b1, FIELD_EXISTENCE);
13 ; unsigned r4 = __builtin_preserve_field_info(arg2->b3, FIELD_EXISTENCE);
14 ; return r1 + r2 + r3 + r4;
17 ; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
21 %struct.s1 = type { i32, i16 }
22 %union.u1 = type { i32 }
24 ; Function Attrs: nounwind readnone
25 define dso_local i32 @test(ptr %arg1, ptr %arg2) local_unnamed_addr #0 !dbg !11 {
27 call void @llvm.dbg.value(metadata ptr %arg1, metadata !29, metadata !DIExpression()), !dbg !35
28 call void @llvm.dbg.value(metadata ptr %arg2, metadata !30, metadata !DIExpression()), !dbg !35
29 %0 = tail call ptr @llvm.preserve.struct.access.index.p0.p0.s1s(ptr elementtype(%struct.s1) %arg1, i32 0, i32 0), !dbg !36, !llvm.preserve.access.index !16
30 %1 = tail call i32 @llvm.bpf.preserve.field.info.p0(ptr %0, i64 2), !dbg !37
31 call void @llvm.dbg.value(metadata i32 %1, metadata !31, metadata !DIExpression()), !dbg !35
32 %2 = tail call ptr @llvm.preserve.struct.access.index.p0.p0.s1s(ptr elementtype(%struct.s1) %arg1, i32 1, i32 2), !dbg !38, !llvm.preserve.access.index !16
33 %3 = tail call i32 @llvm.bpf.preserve.field.info.p0(ptr %2, i64 2), !dbg !39
34 call void @llvm.dbg.value(metadata i32 %3, metadata !32, metadata !DIExpression()), !dbg !35
35 %4 = tail call ptr @llvm.preserve.union.access.index.p0.u1s.p0.u1s(ptr %arg2, i32 0), !dbg !40, !llvm.preserve.access.index !23
36 %5 = tail call i32 @llvm.bpf.preserve.field.info.p0(ptr %4, i64 2), !dbg !41
37 call void @llvm.dbg.value(metadata i32 %5, metadata !33, metadata !DIExpression()), !dbg !35
38 %6 = tail call ptr @llvm.preserve.struct.access.index.p0.p0.u1s(ptr elementtype(%union.u1) %arg2, i32 0, i32 2), !dbg !42, !llvm.preserve.access.index !23
39 %7 = tail call i32 @llvm.bpf.preserve.field.info.p0(ptr %6, i64 2), !dbg !43
40 call void @llvm.dbg.value(metadata i32 %7, metadata !34, metadata !DIExpression()), !dbg !35
41 %add = add i32 %3, %1, !dbg !44
42 %add1 = add i32 %add, %5, !dbg !45
43 %add2 = add i32 %add1, %7, !dbg !46
44 ret i32 %add2, !dbg !47
49 ; CHECK-ALU64: r0 += r1
50 ; CHECK-ALU32: w0 += w1
52 ; CHECK-ALU64: r0 += r1
53 ; CHECK-ALU32: w0 += w1
55 ; CHECK-ALU64: r0 += r1
56 ; CHECK-ALU32: w0 += w1
59 ; CHECK: .long 1 # BTF_KIND_STRUCT(id = 2)
60 ; CHECK: .long 37 # BTF_KIND_UNION(id = 7)
61 ; CHECK: .ascii "s1" # string offset=1
62 ; CHECK: .ascii "u1" # string offset=37
63 ; CHECK: .ascii ".text" # string offset=64
64 ; CHECK: .ascii "0:0" # string offset=70
65 ; CHECK: .ascii "0:2" # string offset=111
67 ; CHECK: .long 16 # FieldReloc
68 ; CHECK-NEXT: .long 64 # Field reloc section string offset=64
70 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
72 ; CHECK-NEXT: .long 70
74 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
76 ; CHECK-NEXT: .long 111
78 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
80 ; CHECK-NEXT: .long 70
82 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
84 ; CHECK-NEXT: .long 111
87 ; Function Attrs: nounwind readnone
88 declare ptr @llvm.preserve.struct.access.index.p0.p0.s1s(ptr, i32, i32) #1
90 ; Function Attrs: nounwind readnone
91 declare i32 @llvm.bpf.preserve.field.info.p0(ptr, i64) #1
93 ; Function Attrs: nounwind readnone
95 ; Function Attrs: nounwind readnone
97 ; Function Attrs: nounwind readnone
98 declare ptr @llvm.preserve.union.access.index.p0.u1s.p0.u1s(ptr, i32) #1
100 ; Function Attrs: nounwind readnone
101 declare ptr @llvm.preserve.struct.access.index.p0.p0.u1s(ptr, i32, i32) #1
103 ; Function Attrs: nounwind readnone
105 ; Function Attrs: nounwind readnone speculatable willreturn
106 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
108 attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
109 attributes #1 = { nounwind readnone }
110 attributes #2 = { nounwind readnone speculatable willreturn }
113 !llvm.module.flags = !{!7, !8, !9}
116 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git 4a60741b74384f14b21fdc0131ede326438840ab)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
117 !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/core")
119 !3 = !DICompositeType(tag: DW_TAG_enumeration_type, file: !1, line: 4, baseType: !4, size: 32, elements: !5)
120 !4 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
122 !6 = !DIEnumerator(name: "FIELD_EXISTENCE", value: 2, isUnsigned: true)
123 !7 = !{i32 2, !"Dwarf Version", i32 4}
124 !8 = !{i32 2, !"Debug Info Version", i32 3}
125 !9 = !{i32 1, !"wchar_size", i32 4}
126 !10 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 4a60741b74384f14b21fdc0131ede326438840ab)"}
127 !11 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 5, type: !12, scopeLine: 5, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !28)
128 !12 = !DISubroutineType(types: !13)
129 !13 = !{!14, !15, !22}
130 !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
131 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64)
132 !16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 2, size: 64, elements: !17)
133 !17 = !{!18, !19, !21}
134 !18 = !DIDerivedType(tag: DW_TAG_member, name: "a1", scope: !16, file: !1, line: 2, baseType: !14, size: 32)
135 !19 = !DIDerivedType(tag: DW_TAG_member, name: "a2", scope: !16, file: !1, line: 2, baseType: !20, size: 9, offset: 32, flags: DIFlagBitField, extraData: i64 32)
136 !20 = !DIDerivedType(tag: DW_TAG_typedef, name: "__uint", file: !1, line: 1, baseType: !4)
137 !21 = !DIDerivedType(tag: DW_TAG_member, name: "a3", scope: !16, file: !1, line: 2, baseType: !20, size: 4, offset: 41, flags: DIFlagBitField, extraData: i64 32)
138 !22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)
139 !23 = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u1", file: !1, line: 3, size: 32, elements: !24)
140 !24 = !{!25, !26, !27}
141 !25 = !DIDerivedType(tag: DW_TAG_member, name: "b1", scope: !23, file: !1, line: 3, baseType: !14, size: 32)
142 !26 = !DIDerivedType(tag: DW_TAG_member, name: "b2", scope: !23, file: !1, line: 3, baseType: !20, size: 9, flags: DIFlagBitField, extraData: i64 0)
143 !27 = !DIDerivedType(tag: DW_TAG_member, name: "b3", scope: !23, file: !1, line: 3, baseType: !20, size: 4, flags: DIFlagBitField, extraData: i64 0)
144 !28 = !{!29, !30, !31, !32, !33, !34}
145 !29 = !DILocalVariable(name: "arg1", arg: 1, scope: !11, file: !1, line: 5, type: !15)
146 !30 = !DILocalVariable(name: "arg2", arg: 2, scope: !11, file: !1, line: 5, type: !22)
147 !31 = !DILocalVariable(name: "r1", scope: !11, file: !1, line: 6, type: !4)
148 !32 = !DILocalVariable(name: "r2", scope: !11, file: !1, line: 7, type: !4)
149 !33 = !DILocalVariable(name: "r3", scope: !11, file: !1, line: 8, type: !4)
150 !34 = !DILocalVariable(name: "r4", scope: !11, file: !1, line: 9, type: !4)
151 !35 = !DILocation(line: 0, scope: !11)
152 !36 = !DILocation(line: 6, column: 53, scope: !11)
153 !37 = !DILocation(line: 6, column: 17, scope: !11)
154 !38 = !DILocation(line: 7, column: 53, scope: !11)
155 !39 = !DILocation(line: 7, column: 17, scope: !11)
156 !40 = !DILocation(line: 8, column: 53, scope: !11)
157 !41 = !DILocation(line: 8, column: 17, scope: !11)
158 !42 = !DILocation(line: 9, column: 53, scope: !11)
159 !43 = !DILocation(line: 9, column: 17, scope: !11)
160 !44 = !DILocation(line: 10, column: 13, scope: !11)
161 !45 = !DILocation(line: 10, column: 18, scope: !11)
162 !46 = !DILocation(line: 10, column: 23, scope: !11)
163 !47 = !DILocation(line: 10, column: 3, scope: !11)