1 ; REQUIRES: object-emission 2 ; This test is failing for powerpc64, because a location list for the 3 ; variable 'c' is not generated at all. Temporary marking this test as XFAIL 4 ; for powerpc, until PR21881 is fixed. 5 ; XFAIL: powerpc64 6 7 ; RUN: %llc_dwarf -O2 -dwarf-version 2 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF23 8 ; RUN: %llc_dwarf -O2 -dwarf-version 3 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF23 9 ; RUN: %llc_dwarf -O2 -dwarf-version 4 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF4 10 11 ; This is a test for PR21176. 12 ; DW_OP_const <const> doesn't describe a constant value, but a value at a constant address. 13 ; The proper way to describe a constant value is DW_OP_constu <const>, DW_OP_stack_value. 14 15 ; Generated with clang -S -emit-llvm -g -O2 test.cpp 16 17 ; extern int func(); 18 ; 19 ; int main() 20 ; { 21 ; volatile int c = 13; 22 ; c = func(); 23 ; return c; 24 ; } 25 26 ; DWARF23: Location description: 10 0d {{$}} 27 ; DWARF4: Location description: 10 0d 9f 28 29 ; Function Attrs: uwtable 30 define i32 @main() #0 !dbg !4 { 31 entry: 32 %c = alloca i32, align 4 33 tail call void @llvm.dbg.value(metadata i32 13, i64 0, metadata !10, metadata !16), !dbg !17 34 store volatile i32 13, i32* %c, align 4, !dbg !18 35 %call = tail call i32 @_Z4funcv(), !dbg !19 36 tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !10, metadata !16), !dbg !17 37 store volatile i32 %call, i32* %c, align 4, !dbg !19 38 tail call void @llvm.dbg.value(metadata i32* %c, i64 0, metadata !10, metadata !16), !dbg !17 39 %c.0.c.0. = load volatile i32, i32* %c, align 4, !dbg !20 40 ret i32 %c.0.c.0., !dbg !20 41 } 42 43 declare i32 @_Z4funcv() #1 44 45 ; Function Attrs: nounwind readnone 46 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 47 48 attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 49 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 50 attributes #2 = { nounwind readnone } 51 52 !llvm.dbg.cu = !{!0} 53 !llvm.module.flags = !{!12, !13} 54 !llvm.ident = !{!14} 55 56 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 223522)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 57 !1 = !DIFile(filename: "test.cpp", directory: "/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo") 58 !2 = !{} 59 !3 = !{!4} 60 !4 = distinct !DISubprogram(name: "main", line: 3, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 4, file: !1, scope: !5, type: !6, variables: !9) 61 !5 = !DIFile(filename: "test.cpp", directory: "/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo") 62 !6 = !DISubroutineType(types: !7) 63 !7 = !{!8} 64 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 65 !9 = !{!10} 66 !10 = !DILocalVariable(name: "c", line: 5, scope: !4, file: !5, type: !11) 67 !11 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !8) 68 !12 = !{i32 2, !"Dwarf Version", i32 2} 69 !13 = !{i32 2, !"Debug Info Version", i32 3} 70 !14 = !{!"clang version 3.6.0 (trunk 223522)"} 71 !15 = !{i32 13} 72 !16 = !DIExpression() 73 !17 = !DILocation(line: 5, column: 16, scope: !4) 74 !18 = !DILocation(line: 5, column: 3, scope: !4) 75 !19 = !DILocation(line: 6, column: 7, scope: !4) 76 !20 = !DILocation(line: 7, column: 3, scope: !4) 77 78
