| ; RUN: opt -O2 %s | llvm-dis > %t1 |
| ; RUN: llc -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK,CHECK-ALU64 %s |
| ; RUN: llc -mattr=+alu32 -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK,CHECK-ALU32 %s |
| ; Source code: |
| ; typedef struct s1 { int a1:7; int a2:4; int a3:5; int a4:16;} __s1; |
| ; union u1 { int b1; __s1 b2; }; |
| ; enum { FIELD_BYTE_SIZE = 1, }; |
| ; int test(union u1 *arg) { |
| ; unsigned r1 = __builtin_preserve_field_info(arg->b2.a1, FIELD_BYTE_SIZE); |
| ; unsigned r2 = __builtin_preserve_field_info(arg->b2.a2, FIELD_BYTE_SIZE); |
| ; unsigned r3 = __builtin_preserve_field_info(arg->b2.a3, FIELD_BYTE_SIZE); |
| ; unsigned r4 = __builtin_preserve_field_info(arg->b2.a4, FIELD_BYTE_SIZE); |
| ; /* r1: 4, r2: 4, r3: 4, r4: 4 */ |
| ; return r1 + r2 + r3 + r4; |
| ; } |
| ; Compilation flag: |
| ; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c |
| |
| target triple = "bpf" |
| |
| %union.u1 = type { i32 } |
| %struct.s1 = type { i32 } |
| |
| ; Function Attrs: nounwind readnone |
| define dso_local i32 @test(%union.u1* %arg) local_unnamed_addr #0 !dbg !11 { |
| entry: |
| call void @llvm.dbg.value(metadata %union.u1* %arg, metadata !28, metadata !DIExpression()), !dbg !33 |
| %0 = tail call %union.u1* @llvm.preserve.union.access.index.p0s_union.u1s.p0s_union.u1s(%union.u1* %arg, i32 1), !dbg !34, !llvm.preserve.access.index !16 |
| %b2 = bitcast %union.u1* %0 to %struct.s1*, !dbg !34 |
| %1 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1* elementtype(%struct.s1) %b2, i32 0, i32 0), !dbg !35, !llvm.preserve.access.index !21 |
| %2 = tail call i32 @llvm.bpf.preserve.field.info.p0i32(i32* %1, i64 1), !dbg !36 |
| call void @llvm.dbg.value(metadata i32 %2, metadata !29, metadata !DIExpression()), !dbg !33 |
| %3 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1* elementtype(%struct.s1) %b2, i32 0, i32 1), !dbg !37, !llvm.preserve.access.index !21 |
| %4 = tail call i32 @llvm.bpf.preserve.field.info.p0i32(i32* %3, i64 1), !dbg !38 |
| call void @llvm.dbg.value(metadata i32 %4, metadata !30, metadata !DIExpression()), !dbg !33 |
| %5 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1* elementtype(%struct.s1) %b2, i32 0, i32 2), !dbg !39, !llvm.preserve.access.index !21 |
| %6 = tail call i32 @llvm.bpf.preserve.field.info.p0i32(i32* %5, i64 1), !dbg !40 |
| call void @llvm.dbg.value(metadata i32 %6, metadata !31, metadata !DIExpression()), !dbg !33 |
| %7 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1* elementtype(%struct.s1) %b2, i32 0, i32 3), !dbg !41, !llvm.preserve.access.index !21 |
| %8 = tail call i32 @llvm.bpf.preserve.field.info.p0i32(i32* %7, i64 1), !dbg !42 |
| call void @llvm.dbg.value(metadata i32 %8, metadata !32, metadata !DIExpression()), !dbg !33 |
| %add = add i32 %4, %2, !dbg !43 |
| %add4 = add i32 %add, %6, !dbg !44 |
| %add5 = add i32 %add4, %8, !dbg !45 |
| ret i32 %add5, !dbg !46 |
| } |
| |
| ; CHECK: r1 = 4 |
| ; CHECK: r0 = 4 |
| ; CHECK-ALU64: r0 += r1 |
| ; CHECK-ALU32: w0 += w1 |
| ; CHECK: r1 = 4 |
| ; CHECK-ALU64: r0 += r1 |
| ; CHECK-ALU32: w0 += w1 |
| ; CHECK: r1 = 4 |
| ; CHECK-ALU64: r0 += r1 |
| ; CHECK-ALU32: w0 += w1 |
| ; CHECK: exit |
| |
| ; CHECK: .long 1 # BTF_KIND_UNION(id = 2) |
| ; CHECK: .ascii "u1" # string offset=1 |
| ; CHECK: .ascii ".text" # string offset=43 |
| ; CHECK: .ascii "0:1:0" # string offset=49 |
| ; CHECK: .ascii "0:1:1" # string offset=92 |
| ; CHECK: .ascii "0:1:2" # string offset=98 |
| ; CHECK: .ascii "0:1:3" # string offset=104 |
| |
| ; CHECK: .long 16 # FieldReloc |
| ; CHECK-NEXT: .long 43 # Field reloc section string offset=43 |
| ; CHECK-NEXT: .long 4 |
| ; CHECK-NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK-NEXT: .long 2 |
| ; CHECK-NEXT: .long 49 |
| ; CHECK-NEXT: .long 1 |
| ; CHECK-NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK-NEXT: .long 2 |
| ; CHECK-NEXT: .long 92 |
| ; CHECK-NEXT: .long 1 |
| ; CHECK-NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK-NEXT: .long 2 |
| ; CHECK-NEXT: .long 98 |
| ; CHECK-NEXT: .long 1 |
| ; CHECK-NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK-NEXT: .long 2 |
| ; CHECK-NEXT: .long 104 |
| ; CHECK-NEXT: .long 1 |
| |
| ; Function Attrs: nounwind readnone |
| declare %union.u1* @llvm.preserve.union.access.index.p0s_union.u1s.p0s_union.u1s(%union.u1*, i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1*, i32, i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare i32 @llvm.bpf.preserve.field.info.p0i32(i32*, i64) #1 |
| |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| 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" } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!7, !8, !9} |
| !llvm.ident = !{!10} |
| |
| !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) |
| !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/core") |
| !2 = !{!3} |
| !3 = !DICompositeType(tag: DW_TAG_enumeration_type, file: !1, line: 3, baseType: !4, size: 32, elements: !5) |
| !4 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) |
| !5 = !{!6} |
| !6 = !DIEnumerator(name: "FIELD_BYTE_SIZE", value: 1, isUnsigned: true) |
| !7 = !{i32 2, !"Dwarf Version", i32 4} |
| !8 = !{i32 2, !"Debug Info Version", i32 3} |
| !9 = !{i32 1, !"wchar_size", i32 4} |
| !10 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 4a60741b74384f14b21fdc0131ede326438840ab)"} |
| !11 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 4, type: !12, scopeLine: 4, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !27) |
| !12 = !DISubroutineType(types: !13) |
| !13 = !{!14, !15} |
| !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64) |
| !16 = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u1", file: !1, line: 2, size: 32, elements: !17) |
| !17 = !{!18, !19} |
| !18 = !DIDerivedType(tag: DW_TAG_member, name: "b1", scope: !16, file: !1, line: 2, baseType: !14, size: 32) |
| !19 = !DIDerivedType(tag: DW_TAG_member, name: "b2", scope: !16, file: !1, line: 2, baseType: !20, size: 32) |
| !20 = !DIDerivedType(tag: DW_TAG_typedef, name: "__s1", file: !1, line: 1, baseType: !21) |
| !21 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 1, size: 32, elements: !22) |
| !22 = !{!23, !24, !25, !26} |
| !23 = !DIDerivedType(tag: DW_TAG_member, name: "a1", scope: !21, file: !1, line: 1, baseType: !14, size: 7, flags: DIFlagBitField, extraData: i64 0) |
| !24 = !DIDerivedType(tag: DW_TAG_member, name: "a2", scope: !21, file: !1, line: 1, baseType: !14, size: 4, offset: 7, flags: DIFlagBitField, extraData: i64 0) |
| !25 = !DIDerivedType(tag: DW_TAG_member, name: "a3", scope: !21, file: !1, line: 1, baseType: !14, size: 5, offset: 11, flags: DIFlagBitField, extraData: i64 0) |
| !26 = !DIDerivedType(tag: DW_TAG_member, name: "a4", scope: !21, file: !1, line: 1, baseType: !14, size: 16, offset: 16, flags: DIFlagBitField, extraData: i64 0) |
| !27 = !{!28, !29, !30, !31, !32} |
| !28 = !DILocalVariable(name: "arg", arg: 1, scope: !11, file: !1, line: 4, type: !15) |
| !29 = !DILocalVariable(name: "r1", scope: !11, file: !1, line: 5, type: !4) |
| !30 = !DILocalVariable(name: "r2", scope: !11, file: !1, line: 6, type: !4) |
| !31 = !DILocalVariable(name: "r3", scope: !11, file: !1, line: 7, type: !4) |
| !32 = !DILocalVariable(name: "r4", scope: !11, file: !1, line: 8, type: !4) |
| !33 = !DILocation(line: 0, scope: !11) |
| !34 = !DILocation(line: 5, column: 52, scope: !11) |
| !35 = !DILocation(line: 5, column: 55, scope: !11) |
| !36 = !DILocation(line: 5, column: 17, scope: !11) |
| !37 = !DILocation(line: 6, column: 55, scope: !11) |
| !38 = !DILocation(line: 6, column: 17, scope: !11) |
| !39 = !DILocation(line: 7, column: 55, scope: !11) |
| !40 = !DILocation(line: 7, column: 17, scope: !11) |
| !41 = !DILocation(line: 8, column: 55, scope: !11) |
| !42 = !DILocation(line: 8, column: 17, scope: !11) |
| !43 = !DILocation(line: 10, column: 13, scope: !11) |
| !44 = !DILocation(line: 10, column: 18, scope: !11) |
| !45 = !DILocation(line: 10, column: 23, scope: !11) |
| !46 = !DILocation(line: 10, column: 3, scope: !11) |
