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Revert "Revert "DI: Fold constant arguments into a single MDString""

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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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-10-03 20:01:09 +00:00
parent 726942c8bb
commit 83902832de
354 changed files with 6825 additions and 6716 deletions
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26
test/DebugInfo/2010-05-10-MultipleCU.ll
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@@ -23,22 +23,22 @@ return:
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!0 = metadata !{i32 3, i32 0, metadata !1, null}
!1 = metadata !{i32 786443, metadata !18, metadata !2, i32 2, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
!2 = metadata !{i32 786478, metadata !18, metadata !3, metadata !"foo", metadata !"foo", metadata !"foo", i32 2, metadata !5, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false, i32 ()* @foo, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
!3 = metadata !{i32 786473, metadata !18} ; [ DW_TAG_file_type ]
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!5 = metadata !{i32 786453, metadata !18, metadata !3, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!1 = metadata !{metadata !"0xb\002\000\000", metadata !18, metadata !2} ; [ DW_TAG_lexical_block ]
!2 = metadata !{metadata !"0x2e\00foo\00foo\00foo\002\000\001\000\006\000\000\000", metadata !18, metadata !3, metadata !5, null, i32 ()* @foo, null, null, null} ; [ DW_TAG_subprogram ]
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!5 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !18, metadata !3, null, metadata !6, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!8 = metadata !{i32 3, i32 0, metadata !9, null}
!9 = metadata !{i32 786443, metadata !20, metadata !10, i32 2, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
!10 = metadata !{i32 786478, metadata !20, metadata !11, metadata !"bar", metadata !"bar", metadata !"bar", i32 2, metadata !13, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false, i32 ()* @bar, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
!11 = metadata !{i32 786473, metadata !20} ; [ DW_TAG_file_type ]
!12 = metadata !{i32 786449, metadata !20, i32 1, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 false, metadata !"", i32 0, metadata !19, metadata !19, metadata !17, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
!13 = metadata !{i32 786453, metadata !20, metadata !11, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !14, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!9 = metadata !{metadata !"0xb\002\000\000", metadata !20, metadata !10} ; [ DW_TAG_lexical_block ]
!10 = metadata !{metadata !"0x2e\00bar\00bar\00bar\002\000\001\000\006\000\000\000", metadata !20, metadata !11, metadata !13, null, i32 ()* @bar, null, null, null} ; [ DW_TAG_subprogram ]
!11 = metadata !{metadata !"0x29", metadata !20} ; [ DW_TAG_file_type ]
!12 = metadata !{metadata !"0x11\001\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\000\00\000\00\000", metadata !20, metadata !19, metadata !19, metadata !17, null, null} ; [ DW_TAG_compile_unit ]
!13 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !20, metadata !11, null, metadata !14, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!15 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", metadata !20, metadata !11} ; [ DW_TAG_base_type ]
!18 = metadata !{metadata !"a.c", metadata !"/tmp/"}
!19 = metadata !{i32 0}
!20 = metadata !{metadata !"b.c", metadata !"/tmp/"}
!21 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
!21 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}