DI: Disallow uniquable DICompileUnits

Since r241097, `DIBuilder` has only created distinct `DICompileUnit`s.
The backend is liable to start relying on that (if it hasn't already),
so make uniquable `DICompileUnit`s illegal and automatically upgrade old
bitcode.  This is a nice cleanup, since we can remove an unnecessary
`DenseSet` (and the associated uniquing info) from `LLVMContextImpl`.

Almost all the testcases were updated with this script:

    git grep -e '= !DICompileUnit' -l -- test |
    grep -v test/Bitcode |
    xargs sed -i '' -e 's,= !DICompileUnit,= distinct !DICompileUnit,'

I imagine something similar should work for out-of-tree testcases.

llvm-svn: 243885

3 files changed, 3 insertions, 3 deletions

diff --git a/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll b/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll
index b6b8f2be724..415543eb1f6 100644
--- a/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll
+++ b/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll
@@ -43,7 +43,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 
 !0 = !DISubprogram(name: "foo", line: 231, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !15, scope: !1, type: !3, function: void (i32)* @foo)
 !1 = !DIFile(filename: "a.c", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang (trunk 129006)", isOptimized: true, emissionKind: 0, file: !15, enums: !4, retainedTypes: !4)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang (trunk 129006)", isOptimized: true, emissionKind: 0, file: !15, enums: !4, retainedTypes: !4)
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
 !5 = !DILocation(line: 131, column: 2, scope: !0)
diff --git a/llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue.ll b/llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue.ll
index 59eb0482ad0..28ff4bc4830 100644
--- a/llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue.ll
+++ b/llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue.ll
@@ -34,7 +34,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 
 !0 = !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !20, scope: !1, type: !3, function: i32 (i32)* @foo)
 !1 = !DIFile(filename: "b.c", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 0, file: !20, enums: !8, retainedTypes: !8)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 0, file: !20, enums: !8, retainedTypes: !8)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5}
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
diff --git a/llvm/test/Transforms/SimplifyCFG/trap-debugloc.ll b/llvm/test/Transforms/SimplifyCFG/trap-debugloc.ll
index fedf6b172d7..aaaea5b4512 100644
--- a/llvm/test/Transforms/SimplifyCFG/trap-debugloc.ll
+++ b/llvm/test/Transforms/SimplifyCFG/trap-debugloc.ll
@@ -13,7 +13,7 @@ define void @foo() nounwind ssp {
 
 !0 = !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !8, scope: !1, type: !3, function: void ()* @foo)
 !1 = !DIFile(filename: "foo.c", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "Apple clang version 3.0 (tags/Apple/clang-206.1) (based on LLVM 3.0svn)", isOptimized: true, emissionKind: 0, file: !8, enums: !{}, retainedTypes: !{}, subprograms: !9)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "Apple clang version 3.0 (tags/Apple/clang-206.1) (based on LLVM 3.0svn)", isOptimized: true, emissionKind: 0, file: !8, enums: !{}, retainedTypes: !{}, subprograms: !9)
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
 !5 = !DILocation(line: 4, column: 2, scope: !6)