IR: Give 'DI' prefix to debug info metadata

Finish off PR23080 by renaming the debug info IR constructs from `MD*`
to `DI*`.  The last of the `DIDescriptor` classes were deleted in
r235356, and the last of the related typedefs removed in r235413, so
this has all baked for about a week.

Note: If you have out-of-tree code (like a frontend), I recommend that
you get everything compiling and tests passing with the *previous*
commit before updating to this one.  It'll be easier to keep track of
what code is using the `DIDescriptor` hierarchy and what you've already
updated, and I think you're extremely unlikely to insert bugs.  YMMV of
course.

Back to *this* commit: I did this using the rename-md-di-nodes.sh
upgrade script I've attached to PR23080 (both code and testcases) and
filtered through clang-format-diff.py.  I edited the tests for
test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns
were off-by-three.  It should work on your out-of-tree testcases (and
code, if you've followed the advice in the previous paragraph).

Some of the tests are in badly named files now (e.g.,
test/Assembler/invalid-mdcompositetype-missing-tag.ll should be
'dicompositetype'); I'll come back and move the files in a follow-up
commit.

llvm-svn: 236120

1 files changed, 17 insertions, 17 deletions

diff --git a/llvm/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll b/llvm/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll
index ce85073f7ef..f9b8e712688 100644
--- a/llvm/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll
+++ b/llvm/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll
@@ -21,13 +21,13 @@ target triple = "x86_64-unknown-linux-gnu"
 ; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[B:!.*]]
 ; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[C:!.*]]
 ; CHECK: ret void
-; CHECK: [[A]] = !MDLocation(line: 1, scope: !{{.*}})
-; CHECK: [[B]] = !MDLocation(line: 3, column: 5, scope: !{{.*}})
-; CHECK: [[C]] = !MDLocation(line: 4, column: 1, scope: !{{.*}})
+; CHECK: [[A]] = !DILocation(line: 1, scope: !{{.*}})
+; CHECK: [[B]] = !DILocation(line: 3, column: 5, scope: !{{.*}})
+; CHECK: [[C]] = !DILocation(line: 4, column: 1, scope: !{{.*}})
 
 define void @_Z3fooPi(i32* %a) #0 {
 entry:
-  tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !MDExpression()), !dbg !15
+  tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !DIExpression()), !dbg !15
   %tobool = icmp eq i32* %a, null, !dbg !16
   br i1 %tobool, label %if.end, label %if.then, !dbg !16
 
@@ -49,27 +49,27 @@ attributes #1 = { nounwind readnone }
 !llvm.module.flags = !{!12, !13}
 !llvm.ident = !{!14}
 
-!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (217079)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
-!1 = !MDFile(filename: "if.cc", directory: "FOO")
+!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (217079)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !DIFile(filename: "if.cc", directory: "FOO")
 !2 = !{}
 !3 = !{!4}
-!4 = !MDSubprogram(name: "foo", linkageName: "_Z3fooPi", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !1, scope: !5, type: !6, function: void (i32*)* @_Z3fooPi, variables: !10)
-!5 = !MDFile(filename: "if.cc", directory: "FOO")
-!6 = !MDSubroutineType(types: !7)
+!4 = !DISubprogram(name: "foo", linkageName: "_Z3fooPi", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !1, scope: !5, type: !6, function: void (i32*)* @_Z3fooPi, variables: !10)
+!5 = !DIFile(filename: "if.cc", directory: "FOO")
+!6 = !DISubroutineType(types: !7)
 !7 = !{null, !8}
-!8 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
-!9 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
+!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !10 = !{!11}
-!11 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 1, arg: 1, scope: !4, file: !5, type: !8)
+!11 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 1, arg: 1, scope: !4, file: !5, type: !8)
 !12 = !{i32 2, !"Dwarf Version", i32 4}
 !13 = !{i32 2, !"Debug Info Version", i32 3}
 !14 = !{!"clang version 3.6.0 (217079)"}
-!15 = !MDLocation(line: 1, column: 15, scope: !4)
-!16 = !MDLocation(line: 2, column: 7, scope: !17)
-!17 = distinct !MDLexicalBlock(line: 2, column: 7, file: !1, scope: !4)
-!18 = !MDLocation(line: 3, column: 5, scope: !17)
+!15 = !DILocation(line: 1, column: 15, scope: !4)
+!16 = !DILocation(line: 2, column: 7, scope: !17)
+!17 = distinct !DILexicalBlock(line: 2, column: 7, file: !1, scope: !4)
+!18 = !DILocation(line: 3, column: 5, scope: !17)
 !19 = !{!20, !20, i64 0}
 !20 = !{!"int", !21, i64 0}
 !21 = !{!"omnipotent char", !22, i64 0}
 !22 = !{!"Simple C/C++ TBAA"}
-!23 = !MDLocation(line: 4, column: 1, scope: !4)
+!23 = !DILocation(line: 4, column: 1, scope: !4)