derek.holloway
7502bf64a4
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104 lines
4.8 KiB
LLVM
104 lines
4.8 KiB
LLVM
; RUN: llc -mtriple=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
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; RUN: llc -mtriple=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
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; Source code:
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; int foo(char a) { volatile short b = 0; return b; }
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; Compilation flag:
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; clang -target bpf -O2 -g -S -emit-llvm test.c
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; Function Attrs: nounwind
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define dso_local i32 @foo(i8 signext) local_unnamed_addr !dbg !7 {
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%2 = alloca i16, align 2
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call void @llvm.dbg.value(metadata i8 %0, metadata !13, metadata !DIExpression()), !dbg !17
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call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %2), !dbg !18
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call void @llvm.dbg.declare(metadata ptr %2, metadata !14, metadata !DIExpression()), !dbg !19
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store volatile i16 0, ptr %2, align 2, !dbg !19, !tbaa !20
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%3 = load volatile i16, ptr %2, align 2, !dbg !24, !tbaa !20
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%4 = sext i16 %3 to i32, !dbg !24
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call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %2), !dbg !25
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ret i32 %4, !dbg !26
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}
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; CHECK: .section .BTF,"",@progbits
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; CHECK-NEXT: .short 60319 # 0xeb9f
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; CHECK-NEXT: .byte 1
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .long 24
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 64
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; CHECK-NEXT: .long 64
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; CHECK-NEXT: .long 59
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; CHECK-NEXT: .long 1 # BTF_KIND_INT(id = 1)
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; CHECK-NEXT: .long 16777216 # 0x1000000
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 16777224 # 0x1000008
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; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 2)
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; CHECK-NEXT: .long 218103809 # 0xd000001
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; CHECK-NEXT: .long 3
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; CHECK-NEXT: .long 6
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 8 # BTF_KIND_INT(id = 3)
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; CHECK-NEXT: .long 16777216 # 0x1000000
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long 16777248 # 0x1000020
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; CHECK-NEXT: .long 12 # BTF_KIND_FUNC(id = 4)
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; CHECK-NEXT: .long 201326593 # 0xc000001
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .byte 0 # string offset=0
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; CHECK-NEXT: .ascii "char" # string offset=1
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .byte 97 # string offset=6
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "int" # string offset=8
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "foo" # string offset=12
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii ".text" # string offset=16
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "/home/yhs/work/tests/llvm/bug/test.c" # string offset=22
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; CHECK-NEXT: .byte 0
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0(i64, ptr nocapture)
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0(i64, ptr nocapture)
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.20181009 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "test.c", directory: "/home/yhs/work/tests/llvm/bug")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 8.0.20181009 "}
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!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !11}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!12 = !{!13, !14}
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!13 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !11)
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!14 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 1, type: !15)
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!15 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !16)
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!16 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
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!17 = !DILocation(line: 1, column: 14, scope: !7)
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!18 = !DILocation(line: 1, column: 19, scope: !7)
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!19 = !DILocation(line: 1, column: 34, scope: !7)
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!20 = !{!21, !21, i64 0}
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!21 = !{!"short", !22, i64 0}
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!22 = !{!"omnipotent char", !23, i64 0}
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!23 = !{!"Simple C/C++ TBAA"}
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!24 = !DILocation(line: 1, column: 49, scope: !7)
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!25 = !DILocation(line: 1, column: 52, scope: !7)
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!26 = !DILocation(line: 1, column: 42, scope: !7)
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