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; 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 <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 <const>, 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)
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