| ; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s |
| ; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s |
| |
| ; Source code: |
| ; int foo(char a) { volatile short b = 0; return b; } |
| ; Compilation flag: |
| ; clang -target bpf -O2 -g -S -emit-llvm test.c |
| |
| ; Function Attrs: nounwind |
| define dso_local i32 @foo(i8 signext) local_unnamed_addr #0 !dbg !7 { |
| %2 = alloca i16, align 2 |
| call void @llvm.dbg.value(metadata i8 %0, metadata !13, metadata !DIExpression()), !dbg !17 |
| %3 = bitcast i16* %2 to i8*, !dbg !18 |
| call void @llvm.lifetime.start.p0i8(i64 2, i8* nonnull %3), !dbg !18 |
| call void @llvm.dbg.declare(metadata i16* %2, metadata !14, metadata !DIExpression()), !dbg !19 |
| store volatile i16 0, i16* %2, align 2, !dbg !19, !tbaa !20 |
| %4 = load volatile i16, i16* %2, align 2, !dbg !24, !tbaa !20 |
| %5 = sext i16 %4 to i32, !dbg !24 |
| call void @llvm.lifetime.end.p0i8(i64 2, i8* nonnull %3), !dbg !25 |
| ret i32 %5, !dbg !26 |
| } |
| |
| ; CHECK: .section .BTF,"",@progbits |
| ; CHECK-NEXT: .short 60319 # 0xeb9f |
| ; CHECK-NEXT: .byte 1 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .long 24 |
| ; CHECK-NEXT: .long 0 |
| ; CHECK-NEXT: .long 64 |
| ; CHECK-NEXT: .long 64 |
| ; CHECK-NEXT: .long 59 |
| ; CHECK-NEXT: .long 44 # BTF_KIND_INT(id = 1) |
| ; CHECK-NEXT: .long 16777216 # 0x1000000 |
| ; CHECK-NEXT: .long 1 |
| ; CHECK-NEXT: .long 16777224 # 0x1000008 |
| ; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 2) |
| ; CHECK-NEXT: .long 218103809 # 0xd000001 |
| ; CHECK-NEXT: .long 3 |
| ; CHECK-NEXT: .long 49 |
| ; CHECK-NEXT: .long 1 |
| ; CHECK-NEXT: .long 51 # BTF_KIND_INT(id = 3) |
| ; CHECK-NEXT: .long 16777216 # 0x1000000 |
| ; CHECK-NEXT: .long 4 |
| ; CHECK-NEXT: .long 16777248 # 0x1000020 |
| ; CHECK-NEXT: .long 55 # BTF_KIND_FUNC(id = 4) |
| ; CHECK-NEXT: .long 201326592 # 0xc000000 |
| ; CHECK-NEXT: .long 2 |
| ; CHECK-NEXT: .byte 0 # string offset=0 |
| ; CHECK-NEXT: .ascii ".text" # string offset=1 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii "/home/yhs/work/tests/llvm/bug/test.c" # string offset=7 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii "char" # string offset=44 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .byte 97 # string offset=49 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii "int" # string offset=51 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii "foo" # string offset=55 |
| ; CHECK-NEXT: .byte 0 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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 speculatable } |
| attributes #2 = { argmemonly nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !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) |
| !1 = !DIFile(filename: "test.c", directory: "/home/yhs/work/tests/llvm/bug") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 8.0.20181009 "} |
| !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) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !11} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) |
| !12 = !{!13, !14} |
| !13 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !11) |
| !14 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 1, type: !15) |
| !15 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !16) |
| !16 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed) |
| !17 = !DILocation(line: 1, column: 14, scope: !7) |
| !18 = !DILocation(line: 1, column: 19, scope: !7) |
| !19 = !DILocation(line: 1, column: 34, scope: !7) |
| !20 = !{!21, !21, i64 0} |
| !21 = !{!"short", !22, i64 0} |
| !22 = !{!"omnipotent char", !23, i64 0} |
| !23 = !{!"Simple C/C++ TBAA"} |
| !24 = !DILocation(line: 1, column: 49, scope: !7) |
| !25 = !DILocation(line: 1, column: 52, scope: !7) |
| !26 = !DILocation(line: 1, column: 42, scope: !7) |