Make the default triple optional by allowing an empty string

When building LLVM as a (potentially dynamic) library that can be linked against
by multiple compilers, the default triple is not really meaningful.
We allow to explicitely set it to an empty string when configuring LLVM.
In this case, said "target independent" tests in the test suite that are using
the default triple are disabled by matching the newly available feature
"default_triple".

Reviewers: probinson, echristo
Differential Revision: http://reviews.llvm.org/D12660

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 247775

1 files changed, 56 insertions, 0 deletions

diff --git a/llvm/test/DebugInfo/Generic/inlined-vars.ll b/llvm/test/DebugInfo/Generic/inlined-vars.ll
new file mode 100644
index 00000000000..05e7f7d2beb
--- /dev/null
+++ b/llvm/test/DebugInfo/Generic/inlined-vars.ll
@@ -0,0 +1,56 @@
+; RUN: %llc_dwarf -O0 < %s | FileCheck %s -check-prefix ARGUMENT
+; RUN: %llc_dwarf -O0 < %s | FileCheck %s -check-prefix VARIABLE
+; PR 13202
+
+define i32 @main() uwtable {
+entry:
+  tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !18, metadata !DIExpression()), !dbg !21
+  tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !22, metadata !DIExpression()), !dbg !23
+  tail call void @smth(i32 0), !dbg !24
+  tail call void @smth(i32 0), !dbg !25
+  ret i32 0, !dbg !19
+}
+
+declare void @smth(i32)
+
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!27}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 159419)", isOptimized: true, emissionKind: 0, file: !26, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports:  !2)
+!1 = !{i32 0}
+!2 = !{}
+!3 = !{!5, !10}
+!5 = distinct !DISubprogram(name: "main", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 10, file: !26, scope: !6, type: !7, function: i32 ()* @main, variables: !2)
+!6 = !DIFile(filename: "inline-bug.cc", directory: "/tmp/dbginfo/pr13202")
+!7 = !DISubroutineType(types: !8)
+!8 = !{!9}
+!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!10 = distinct !DISubprogram(name: "f", linkageName: "_ZL1fi", line: 3, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !26, scope: !6, type: !11, variables: !13)
+!11 = !DISubroutineType(types: !12)
+!12 = !{!9, !9}
+!13 = !{!15, !16}
+!15 = !DILocalVariable(name: "argument", line: 3, arg: 1, scope: !10, file: !6, type: !9)
+
+; Two DW_TAG_formal_parameter: one abstract and one inlined.
+; ARGUMENT: {{.*Abbrev.*DW_TAG_formal_parameter}}
+; ARGUMENT: {{.*Abbrev.*DW_TAG_formal_parameter}}
+; ARGUMENT-NOT: {{.*Abbrev.*DW_TAG_formal_parameter}}
+
+!16 = !DILocalVariable(name: "local", line: 4, scope: !10, file: !6, type: !9)
+
+; Two DW_TAG_variable: one abstract and one inlined.
+; VARIABLE: {{.*Abbrev.*DW_TAG_variable}}
+; VARIABLE: {{.*Abbrev.*DW_TAG_variable}}
+; VARIABLE-NOT: {{.*Abbrev.*DW_TAG_variable}}
+
+!18 = !DILocalVariable(name: "argument", line: 3, arg: 1, scope: !10, file: !6, type: !9)
+!19 = !DILocation(line: 11, column: 10, scope: !5)
+!21 = !DILocation(line: 3, column: 25, scope: !10, inlinedAt: !19)
+!22 = !DILocalVariable(name: "local", line: 4, scope: !10, file: !6, type: !9)
+!23 = !DILocation(line: 4, column: 16, scope: !10, inlinedAt: !19)
+!24 = !DILocation(line: 5, column: 3, scope: !10, inlinedAt: !19)
+!25 = !DILocation(line: 6, column: 3, scope: !10, inlinedAt: !19)
+!26 = !DIFile(filename: "inline-bug.cc", directory: "/tmp/dbginfo/pr13202")
+!27 = !{i32 1, !"Debug Info Version", i32 3}