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, 0 insertions, 73 deletions

diff --git a/llvm/test/DebugInfo/two-cus-from-same-file.ll b/llvm/test/DebugInfo/two-cus-from-same-file.ll
deleted file mode 100644
index 4aeaaac22d2..00000000000
--- a/llvm/test/DebugInfo/two-cus-from-same-file.ll
+++ /dev/null
@@ -1,73 +0,0 @@
-; For http://llvm.org/bugs/show_bug.cgi?id=12942
-;   There are two CUs coming from /tmp/foo.c in this module. Make sure it doesn't
-;   blow llc up and produces something reasonable.
-;
-
-; REQUIRES: object-emission
-
-; RUN: %llc_dwarf %s -o %t -filetype=obj -O0
-; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
-
-; ModuleID = 'test.bc'
-
-@str = private unnamed_addr constant [4 x i8] c"FOO\00"
-@str1 = private unnamed_addr constant [6 x i8] c"Main!\00"
-
-define void @foo() nounwind {
-entry:
-  %puts = tail call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str, i32 0, i32 0)), !dbg !23
-  ret void, !dbg !25
-}
-
-declare i32 @puts(i8* nocapture) nounwind
-
-define i32 @main(i32 %argc, i8** nocapture %argv) nounwind {
-entry:
-  tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !21, metadata !DIExpression()), !dbg !26
-  tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !22, metadata !DIExpression()), !dbg !27
-  %puts = tail call i32 @puts(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @str1, i32 0, i32 0)), !dbg !28
-  tail call void @foo() nounwind, !dbg !30
-  ret i32 0, !dbg !31
-}
-
-declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
-
-!llvm.dbg.cu = !{!0, !9}
-!llvm.module.flags = !{!33}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156513)", isOptimized: true, emissionKind: 1, file: !32, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports: !1)
-!1 = !{}
-!3 = !{!5}
-!5 = distinct !DISubprogram(name: "foo", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !32, scope: !6, type: !7, function: void ()* @foo, variables: !1)
-!6 = !DIFile(filename: "foo.c", directory: "/tmp")
-!7 = !DISubroutineType(types: !8)
-!8 = !{null}
-!9 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156513)", isOptimized: true, emissionKind: 1, file: !32, enums: !1, retainedTypes: !1, subprograms: !10, globals: !1, imports: !1)
-!10 = !{!12}
-!12 = distinct !DISubprogram(name: "main", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 11, file: !32, scope: !6, type: !13, function: i32 (i32, i8**)* @main, variables: !19)
-!13 = !DISubroutineType(types: !14)
-!14 = !{!15, !15, !16}
-!15 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !17)
-!17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !18)
-!18 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
-!19 = !{!21, !22}
-!21 = !DILocalVariable(name: "argc", line: 11, arg: 1, scope: !12, file: !6, type: !15)
-!22 = !DILocalVariable(name: "argv", line: 11, arg: 2, scope: !12, file: !6, type: !16)
-!23 = !DILocation(line: 6, column: 3, scope: !24)
-!24 = distinct !DILexicalBlock(line: 5, column: 16, file: !32, scope: !5)
-!25 = !DILocation(line: 7, column: 1, scope: !24)
-!26 = !DILocation(line: 11, column: 14, scope: !12)
-!27 = !DILocation(line: 11, column: 26, scope: !12)
-!28 = !DILocation(line: 12, column: 3, scope: !29)
-!29 = distinct !DILexicalBlock(line: 11, column: 34, file: !32, scope: !12)
-!30 = !DILocation(line: 13, column: 3, scope: !29)
-!31 = !DILocation(line: 14, column: 3, scope: !29)
-!32 = !DIFile(filename: "foo.c", directory: "/tmp")
-
-; This test is simple to be cross platform (many targets don't yet have
-; sufficiently good DWARF emission and/or dumping)
-; CHECK: {{DW_TAG_compile_unit}}
-; CHECK: {{foo\.c}}
-
-!33 = !{i32 1, !"Debug Info Version", i32 3}