; REQUIRES: object-emission ; This test is failing for powerpc64, because a location list for the ; variable 'c' is not generated at all. Temporary marking this test as XFAIL ; for powerpc, until PR21881 is fixed. ; XFAIL: powerpc64 ; RUN: %llc_dwarf -O2 -dwarf-version 2 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF23 ; RUN: %llc_dwarf -O2 -dwarf-version 3 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF23 ; RUN: %llc_dwarf -O2 -dwarf-version 4 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF4 ; This is a test for PR21176. ; DW_OP_const doesn't describe a constant value, but a value at a constant address. ; The proper way to describe a constant value is DW_OP_constu , DW_OP_stack_value. ; Generated with clang -S -emit-llvm -g -O2 test.cpp ; extern int func(); ; ; int main() ; { ; volatile int c = 13; ; c = func(); ; return c; ; } ; DWARF23: Location description: 10 0d {{$}} ; DWARF4: Location description: 10 0d 9f ; Function Attrs: uwtable define i32 @main() #0 { entry: %c = alloca i32, align 4 tail call void @llvm.dbg.value(metadata i32 13, i64 0, metadata !10, metadata !16), !dbg !17 store volatile i32 13, i32* %c, align 4, !dbg !18 %call = tail call i32 @_Z4funcv(), !dbg !19 tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !10, metadata !16), !dbg !17 store volatile i32 %call, i32* %c, align 4, !dbg !19 tail call void @llvm.dbg.value(metadata i32* %c, i64 0, metadata !10, metadata !16), !dbg !17 %c.0.c.0. = load volatile i32, i32* %c, align 4, !dbg !20 ret i32 %c.0.c.0., !dbg !20 } declare i32 @_Z4funcv() #1 ; Function Attrs: nounwind readnone declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 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" } 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" } attributes #2 = { nounwind readnone } !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!12, !13} !llvm.ident = !{!14} !0 = !MDCompileUnit(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) !1 = !MDFile(filename: "test.cpp", directory: "/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo") !2 = !{} !3 = !{!4} !4 = !MDSubprogram(name: "main", line: 3, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 4, file: !1, scope: !5, type: !6, function: i32 ()* @main, variables: !9) !5 = !MDFile(filename: "test.cpp", directory: "/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo") !6 = !MDSubroutineType(types: !7) !7 = !{!8} !8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) !9 = !{!10} !10 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "c", line: 5, scope: !4, file: !5, type: !11) !11 = !MDDerivedType(tag: DW_TAG_volatile_type, baseType: !8) !12 = !{i32 2, !"Dwarf Version", i32 2} !13 = !{i32 2, !"Debug Info Version", i32 3} !14 = !{!"clang version 3.6.0 (trunk 223522)"} !15 = !{i32 13} !16 = !MDExpression() !17 = !MDLocation(line: 5, column: 16, scope: !4) !18 = !MDLocation(line: 5, column: 3, scope: !4) !19 = !MDLocation(line: 6, column: 7, scope: !4) !20 = !MDLocation(line: 7, column: 3, scope: !4)