[llvm-objdump] Simplify PrintHelpMessage() logic

This relands rL358418. It missed one test that should also use -macho
Note, all the other -private-header -exports-trie tests are used
together with -macho.

llvm-svn: 358472

Author: MaskRay

llvm/test/Object/objdump-export-list.test

@@ -1,4 +1,5 @@
-RUN: llvm-objdump -exports-trie %p/Inputs/macho-no-exports.dylib | FileCheck %s
+RUN: llvm-objdump -macho -exports-trie %p/Inputs/macho-no-exports.dylib | FileCheck %s
 
 ; Test that we don't crash with an empty export list.
-CHECK: macho-no-exports.dylib: file format Mach-O 64-bit x86-64
+CHECK: macho-no-exports.dylib
+CHECK: Exports trie:

llvm/test/tools/llvm-objdump/X86/macho-private-header.test

@@ -1,4 +1,4 @@
-// RUN: llvm-objdump -private-header %p/Inputs/hello.obj.macho-x86_64 | FileCheck %s
+// RUN: llvm-objdump -macho -private-header %p/Inputs/hello.obj.macho-x86_64 | FileCheck %s
 
 CHECK: Mach header
 CHECK:       magic cputype cpusubtype  caps    filetype ncmds sizeofcmds      flags

llvm/tools/llvm-objdump/llvm-objdump.cpp

@@ -2008,34 +2008,15 @@ int main(int argc, char **argv) {
   if (DisassembleAll || PrintSource || PrintLines)
     Disassemble = true;
 
-  if (!Disassemble
-      && !Relocations
-      && !DynamicRelocations
-      && !SectionHeaders
-      && !SectionContents
-      && !SymbolTable
-      && !UnwindInfo
-      && !PrivateHeaders
-      && !FileHeaders
-      && !FirstPrivateHeader
-      && !ExportsTrie
-      && !Rebase
-      && !Bind
-      && !LazyBind
-      && !WeakBind
-      && !RawClangAST
-      && !(UniversalHeaders && MachOOpt)
-      && !ArchiveHeaders
-      && !(IndirectSymbols && MachOOpt)
-      && !(DataInCode && MachOOpt)
-      && !(LinkOptHints && MachOOpt)
-      && !(InfoPlist && MachOOpt)
-      && !(DylibsUsed && MachOOpt)
-      && !(DylibId && MachOOpt)
-      && !(ObjcMetaData && MachOOpt)
-      && !(!FilterSections.empty() && MachOOpt)
-      && !FaultMapSection
-      && DwarfDumpType == DIDT_Null) {
+  if (!ArchiveHeaders && !Disassemble && DwarfDumpType == DIDT_Null &&
+      !DynamicRelocations && !FileHeaders && !PrivateHeaders && !RawClangAST &&
+      !Relocations && !SectionHeaders && !SectionContents && !SymbolTable &&
+      !UnwindInfo && !FaultMapSection &&
+      !(MachOOpt &&
+        (Bind || DataInCode || DylibId || DylibsUsed || ExportsTrie ||
+         FirstPrivateHeader || IndirectSymbols || InfoPlist || LazyBind ||
+         LinkOptHints || ObjcMetaData || Rebase || UniversalHeaders ||
+         WeakBind || !FilterSections.empty()))) {
     cl::PrintHelpMessage();
     return 2;
   }