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b2120d0c25
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. Added DW_OP_stack_value to the stack. Marked incorrect-variable-debugloc1.ll to xfail for PowerPC64, while the the failure (PR21881) is being investigated. llvm-svn: 224098
78 lines
4.2 KiB
LLVM
78 lines
4.2 KiB
LLVM
; REQUIRES: object-emission
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; This test is failing for powerpc64, because a location list for the
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; variable 'c' is not generated at all. Temporary marking this test as XFAIL
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; for powerpc, until PR21881 is fixed.
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; XFAIL: powerpc64
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; RUN: %llc_dwarf -O2 -dwarf-version 2 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF23
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; RUN: %llc_dwarf -O2 -dwarf-version 3 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF23
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; RUN: %llc_dwarf -O2 -dwarf-version 4 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF4
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; This is a test for PR21176.
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; DW_OP_const <const> doesn't describe a constant value, but a value at a constant address.
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; The proper way to describe a constant value is DW_OP_constu <const>, DW_OP_stack_value.
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; Generated with clang -S -emit-llvm -g -O2 test.cpp
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; extern int func();
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;
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; int main()
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; {
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; volatile int c = 13;
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; c = func();
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; return c;
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; }
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; DWARF23: Location description: 10 0d {{$}}
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; DWARF4: Location description: 10 0d 9f
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; Function Attrs: uwtable
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define i32 @main() #0 {
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entry:
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%c = alloca i32, align 4
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tail call void @llvm.dbg.value(metadata !15, i64 0, metadata !10, metadata !16), !dbg !17
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store volatile i32 13, i32* %c, align 4, !dbg !18
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%call = tail call i32 @_Z4funcv(), !dbg !19
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tail call void @llvm.dbg.value(metadata !{i32 %call}, i64 0, metadata !10, metadata !16), !dbg !17
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store volatile i32 %call, i32* %c, align 4, !dbg !19
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tail call void @llvm.dbg.value(metadata !{i32* %c}, i64 0, metadata !10, metadata !16), !dbg !17
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%c.0.c.0. = load volatile i32* %c, align 4, !dbg !20
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ret i32 %c.0.c.0., !dbg !20
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}
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declare i32 @_Z4funcv() #1
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
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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" }
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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" }
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attributes #2 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!12, !13}
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!llvm.ident = !{!14}
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!0 = metadata !{metadata !"0x11\004\00clang version 3.6.0 (trunk 223522)\001\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo/test.cpp] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"test.cpp", metadata !"/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4}
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!4 = metadata !{metadata !"0x2e\00main\00main\00\003\000\001\000\000\00256\001\004", metadata !1, metadata !5, metadata !6, null, i32 ()* @main, null, null, metadata !9} ; [ DW_TAG_subprogram ] [line 3] [def] [scope 4] [main]
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!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo/test.cpp]
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!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", null, null, null, metadata !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{metadata !8}
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!8 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!9 = metadata !{metadata !10}
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!10 = metadata !{metadata !"0x100\00c\005\000", metadata !4, metadata !5, metadata !11} ; [ DW_TAG_auto_variable ] [c] [line 5]
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!11 = metadata !{metadata !"0x35\00\000\000\000\000\000", null, null, metadata !8} ; [ DW_TAG_volatile_type ] [line 0, size 0, align 0, offset 0] [from int]
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!12 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
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!13 = metadata !{i32 2, metadata !"Debug Info Version", i32 2}
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!14 = metadata !{metadata !"clang version 3.6.0 (trunk 223522)"}
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!15 = metadata !{i32 13}
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!16 = metadata !{metadata !"0x102"} ; [ DW_TAG_expression ]
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!17 = metadata !{i32 5, i32 16, metadata !4, null}
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!18 = metadata !{i32 5, i32 3, metadata !4, null}
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!19 = metadata !{i32 6, i32 7, metadata !4, null}
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!20 = metadata !{i32 7, i32 3, metadata !4, null}
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