[llvm-debuginfo-analyzer] (08/09) - ELF Reader

The unitest and test cases are platform dependent (x86_64)
causing failures in:

  https://lab.llvm.org/buildbot/#/builders/245/builds/146
  https://lab.llvm.org/buildbot/#/builders/188/builds/21397
  No available targets are compatible with triple "x86_64-unknown-unknown".

Added:
- ';REQUIRES: x86-registered-target' to the LIT tests.
- Code to check if the target 'Triple::x86_64' is supported to
  the unittest case.

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/01-dwarf-compare-logical-elements.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 1 - General options
 
 ; test.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/01-dwarf-print-basic-details.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 1 - General options.
 
 ; test.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/01-dwarf-select-logical-elements.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 1 - General options
 
 ; test.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/02-dwarf-logical-lines.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 2 - Assembler instructions.
 
 ; hello-world.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/03-dwarf-incorrect-lexical-scope-typedef.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 3 - Incorrect lexical scope for typedef.
 
 ; pr-44884.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/04-dwarf-missing-nested-enumerators.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 4 - Missing nested enumerations.
 
 ; pr-46466.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/05-dwarf-incorrect-lexical-scope-variable.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 5 - Incorrect lexical scope variable.
 
 ; pr-43860.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/06-dwarf-full-logical-view.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Test case 6 - Full logical view
 
 ; test.cpp

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/pr-57040-ignored-DW_FORM_implicit_const.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Ignored attributes with DW_FORM_implicit_const.
 ; https://github.com/llvm/llvm-project/issues/57040
 

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/pr-57040-incorrect-function-compare.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; Incorrect function matching during comparison.
 ; https://github.com/llvm/llvm-project/issues/57040
 

llvm/test/tools/llvm-debuginfo-analyzer/DWARF/pr-incorrect-logical-instructions.test

@@ -1,3 +1,5 @@
+; REQUIRES: x86-registered-target
+
 ; * Added incorrect logical instructions for: --print=lines,instructions
 ;   'bar' and 'foo' showing extra instruction from compiler generated functions:
 ;   '_cxx_global_var_init' and '_GLOBAL_sub_l_suite_lexical_01.cpp'

llvm/unittests/DebugInfo/LogicalView/ELFReaderTest.cpp

@@ -12,6 +12,7 @@
 #include "llvm/DebugInfo/LogicalView/Core/LVSymbol.h"
 #include "llvm/DebugInfo/LogicalView/Core/LVType.h"
 #include "llvm/DebugInfo/LogicalView/LVReaderHandler.h"
+#include "llvm/MC/TargetRegistry.h"
 #include "llvm/Support/COM.h"
 #include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/ScopedPrinter.h"
@@ -331,6 +332,16 @@ TEST(LogicalViewTest, ELFReader) {
 
   SmallString<128> InputsDir = unittest::getInputFileDirectory(TestMainArgv0);
 
+  // This test requires a x86-registered-target
+  Triple TT;
+  TT.setArch(Triple::x86_64);
+  TT.setVendor(Triple::UnknownVendor);
+  TT.setOS(Triple::UnknownOS);
+
+  std::string TargetLookupError;
+  if (!TargetRegistry::lookupTarget(std::string(TT.str()), TargetLookupError))
+    return;
+
   // Logical elements general properties and selection.
   elementProperties(InputsDir);
   elementSelection(InputsDir);