Remove AllTargetsAsmPrinters

[thakis]

Summary

It's been an empty target since r360498 and friends
(git log --grep='Move InstPrinter files to MCTargetDesc.' llvm/lib/Target),
but due to hwo the way these targets are structured it was silently
an empty target without anyone noticing.

No behavior change.

[MaskRay]

Thanks for fixing CMake:)

The empty target seems to have caused the failure in http://45.33.8.238/linux/7815/step_4.txt

[thakis]

In D72966#1827771, @MaskRay wrote:

Thanks for fixing CMake:)

The empty target seems to have caused the failure in http://45.33.8.238/linux/7815/step_4.txt

What has happened there (I think) is that @epastor copied the llvm-ml cmakelists.txt from an existing cmakelists.txt that had the AllTargetsAsmPrinters target, and the copied that to the gn build file – and the gn build is a bit more explicit about which things exist and which don't :) (I had fixed the gn build in 6afa0e88e32558)

[thakis]

Bleh, forgot to add "Differential Revision:" footer. Landed in 1d568bf9605c05ff088b244d7894ab2d88da9811

llvm/cmake/modules/LLVM-Config.cmake

elseif( c STREQUAL "nativecodegen" )
       endif()
     elseif( c STREQUAL "AllTargetsCodeGens" )
       # Link all the codegens from all the targets
       foreach(t ${LLVM_TARGETS_TO_BUILD})
         if( TARGET LLVM${t}CodeGen)
           list(APPEND expanded_components "${t}CodeGen")
         endif()
       endforeach(t)
-    elseif( c STREQUAL "AllTargetsAsmPrinters" )
-      # Link all the asm printers from all the targets
-      foreach(t ${LLVM_TARGETS_TO_BUILD})
-        if( TARGET LLVM${t}AsmPrinter )
-          list(APPEND expanded_components "${t}AsmPrinter")
-        endif()
-      endforeach(t)
     elseif( c STREQUAL "AllTargetsAsmParsers" )
       # Link all the asm parsers from all the targets
       foreach(t ${LLVM_TARGETS_TO_BUILD})
         if( TARGET LLVM${t}AsmParser )
           list(APPEND expanded_components "${t}AsmParser")
         endif()
       endforeach(t)
     elseif( c STREQUAL "AllTargetsDescs" )

llvm/docs/BuildingADistribution.rst

 **LLVM_DYLIB_COMPONENTS**:STRING
   This variable can be set to a semi-colon separated name of LLVM library
   components. LLVM library components are either library names with the LLVM
   prefix removed (i.e. Support, Demangle...), LLVM target names, or special
   purpose component names. The special purpose component names are:
   
   #. ``all`` - All LLVM available component libraries
   #. ``Native`` - The LLVM target for the Native system
-  #. ``AllTargetsAsmPrinters`` - All the included target ASM printers libraries
   #. ``AllTargetsAsmParsers`` - All the included target ASM parsers libraries
   #. ``AllTargetsDescs`` - All the included target descriptions libraries
   #. ``AllTargetsDisassemblers`` - All the included target dissassemblers libraries
   #. ``AllTargetsInfos`` - All the included target info libraries
 
 **LLVM_INSTALL_TOOLCHAIN_ONLY**:BOOL
   This option defaults to ``Off``: when set to ``On`` it removes many of the
   LLVM development and testing tools as well as component libraries from the
   default ``install`` target. Including the development tools is not recommended
   for distributions as many of the LLVM tools are only intended for development
   and testing use.

llvm/tools/dsymutil/CMakeLists.txt

 set(LLVM_TARGET_DEFINITIONS Options.td)
 tablegen(LLVM Options.inc -gen-opt-parser-defs)
 add_public_tablegen_target(DsymutilTableGen)
 
 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsCodeGens
   AllTargetsDescs
   AllTargetsInfos
   AsmPrinter
   DebugInfoDWARF
   DWARFLinker
   MC
   Object

llvm/tools/llvm-cfi-verify/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsAsmParsers
   AllTargetsDescs
   AllTargetsDisassemblers
   AllTargetsInfos
   MC
   MCParser
   Object
   Support

llvm/tools/llvm-mc-assemble-fuzzer/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-    AllTargetsAsmPrinters
     AllTargetsAsmParsers
     AllTargetsDescs
     AllTargetsInfos
     MC
     MCParser
     Support
 )
 add_llvm_fuzzer(llvm-mc-assemble-fuzzer
   llvm-mc-assemble-fuzzer.cpp
   )

llvm/tools/llvm-mc-disassemble-fuzzer/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-    AllTargetsAsmPrinters
     AllTargetsDescs
     AllTargetsDisassemblers
     AllTargetsInfos
     MC
     MCDisassembler
     MCParser
     Support
 )
 add_llvm_fuzzer(llvm-mc-disassemble-fuzzer
   llvm-mc-disassemble-fuzzer.cpp
   )

llvm/tools/llvm-mc/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsAsmParsers
   AllTargetsDescs
   AllTargetsDisassemblers
   AllTargetsInfos
   MC
   MCParser
   Support
   )
 
 add_llvm_tool(llvm-mc
   llvm-mc.cpp
   Disassembler.cpp
   )

llvm/tools/llvm-mca/CMakeLists.txt

 include_directories(include)
 
 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsAsmParsers
   AllTargetsDescs
   AllTargetsDisassemblers
   AllTargetsInfos
   MCA
   MC
   MCParser
   Support

llvm/tools/llvm-ml/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsAsmParsers
   AllTargetsDescs
   AllTargetsDisassemblers
   AllTargetsInfos
   MC
   MCParser
   Support
   )
 
 add_llvm_tool(llvm-ml
   llvm-ml.cpp
   Disassembler.cpp
   )

llvm/tools/llvm-objdump/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsDescs
   AllTargetsDisassemblers
   AllTargetsInfos
   BinaryFormat
   CodeGen
   DebugInfoDWARF
   DebugInfoPDB
   Demangle

llvm/tools/sancov/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsDescs
   AllTargetsDisassemblers
   AllTargetsInfos
   DebugInfoDWARF
   DebugInfoPDB
   MC
   MCDisassembler
   Object
   Support
   Symbolize
   )
 
 add_llvm_tool(sancov
   sancov.cpp
   )

llvm/unittests/tools/llvm-cfi-verify/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS
-  AllTargetsAsmPrinters
   AllTargetsAsmParsers
   AllTargetsDescs
   AllTargetsDisassemblers
   AllTargetsInfos
   MC
   MCParser
   Object
   Support
   Symbolize
   )
 
 add_llvm_unittest(CFIVerifyTests
   FileAnalysis.cpp
   GraphBuilder.cpp
   )
 target_link_libraries(CFIVerifyTests PRIVATE LLVMCFIVerify)