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c1be4794ba
This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
81 lines
4.1 KiB
LLVM
81 lines
4.1 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj < %s > %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; IR generated from the following code compiled with clang -g:
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; enum e1 { I, J = 0xffffffffU, K = 0xf000000000000000ULL } a;
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; enum e2 { X };
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; void func() {
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; int b = X;
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; }
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; These values were previously being truncated to -1 and 0 respectively.
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; CHECK: debug_info contents
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; CHECK: DW_TAG_enumeration_type
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; CHECK-NEXT: DW_AT_name{{.*}} = "e1"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NEXT: DW_AT_name{{.*}} = "J"
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata] (4294967295)
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NEXT: DW_AT_name{{.*}} = "K"
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata] (-1152921504606846976)
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; Check that we retain enums that aren't referenced by any variables, etc
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; CHECK: DW_TAG_enumeration_type
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; CHECK-NEXT: DW_AT_name{{.*}} = "e2"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NEXT: DW_AT_name{{.*}} = "X"
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@a = global i64 0, align 8
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; Function Attrs: nounwind uwtable
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define void @_Z4funcv() #0 {
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entry:
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%b = alloca i32, align 4
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call void @llvm.dbg.declare(metadata !{i32* %b}, metadata !20, metadata !{metadata !"0x102"}), !dbg !22
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store i32 0, i32* %b, align 4, !dbg !22
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ret void, !dbg !23
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!19, !24}
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!0 = metadata !{metadata !"0x11\004\00clang version 3.4 \000\00\000\00\000", metadata !1, metadata !2, metadata !11, metadata !12, metadata !17, metadata !11} ; [ DW_TAG_compile_unit ] [/tmp/enum.cpp] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"enum.cpp", metadata !"/tmp"}
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!2 = metadata !{metadata !3, metadata !8}
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!3 = metadata !{metadata !"0x4\00e1\001\0064\0064\000\000\000", metadata !1, null, null, metadata !4, null, null, null} ; [ DW_TAG_enumeration_type ] [e1] [line 1, size 64, align 64, offset 0] [def] [from ]
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!4 = metadata !{metadata !5, metadata !6, metadata !7}
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!5 = metadata !{metadata !"0x28\00I\000"} ; [ DW_TAG_enumerator ] [I :: 0]
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!6 = metadata !{metadata !"0x28\00J\004294967295"} ; [ DW_TAG_enumerator ] [J :: 4294967295]
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!7 = metadata !{metadata !"0x28\00K\00-1152921504606846976"} ; [ DW_TAG_enumerator ] [K :: 17293822569102704640]
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!8 = metadata !{metadata !"0x4\00e2\002\0032\0032\000\000\000", metadata !1, null, null, metadata !9, null, null, null} ; [ DW_TAG_enumeration_type ] [e2] [line 2, size 32, align 32, offset 0] [def] [from ]
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!9 = metadata !{metadata !10}
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!10 = metadata !{metadata !"0x28\00X\000"} ; [ DW_TAG_enumerator ] [X :: 0]
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!11 = metadata !{}
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!12 = metadata !{metadata !13}
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!13 = metadata !{metadata !"0x2e\00func\00func\00_Z4funcv\003\000\001\000\006\00256\000\003", metadata !1, metadata !14, metadata !15, null, void ()* @_Z4funcv, null, null, metadata !11} ; [ DW_TAG_subprogram ] [line 3] [def] [func]
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!14 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [/tmp/enum.cpp]
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!15 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !16, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!16 = metadata !{null}
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!17 = metadata !{metadata !18}
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!18 = metadata !{metadata !"0x34\00a\00a\00\001\000\001", null, metadata !14, metadata !3, i64* @a, null} ; [ DW_TAG_variable ] [a] [line 1] [def]
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!19 = metadata !{i32 2, metadata !"Dwarf Version", i32 3}
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!20 = metadata !{metadata !"0x100\00b\004\000", metadata !13, metadata !14, metadata !21} ; [ DW_TAG_auto_variable ] [b] [line 4]
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!21 = 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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!22 = metadata !{i32 4, i32 0, metadata !13, null}
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!23 = metadata !{i32 5, i32 0, metadata !13, null}
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!24 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
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