[llvm-(min-)tblgen] Avoid redundant source compilation

Author: Meinersbur

llvm/utils/TableGen/CMakeLists.txt

@@ -7,18 +7,25 @@ add_subdirectory(Common)
 
 set(LLVM_LINK_COMPONENTS Support)
 
-# llvm-min-tablegen only contains a subset of backends necessary to
-# build llvm/include. It must not depend on TableGenCommon, as
-# TableGenCommon depends on this already to generate things such as
-# ValueType definitions.
-add_tablegen(llvm-min-tblgen LLVM_HEADERS
+# Sources included in llvm-min-tblgen and llvm-tblgen.
+add_llvm_library(LLVMTableGenBoth OBJECT EXCLUDE_FROM_ALL DISABLE_LLVM_LINK_LLVM_DYLIB
   TableGen.cpp
   ARMTargetDefEmitter.cpp
   Attributes.cpp
   DirectiveEmitter.cpp
   IntrinsicEmitter.cpp
   RISCVTargetDefEmitter.cpp
   VTEmitter.cpp
+
+  PARTIAL_SOURCES_INTENDED
+  )
+
+# llvm-min-tablegen only contains a subset of backends necessary to
+# build llvm/include. It must not depend on TableGenCommon, as
+# TableGenCommon depends on this already to generate things such as
+# ValueType definitions.
+add_tablegen(llvm-min-tblgen LLVM_HEADERS
+  $<TARGET_OBJECTS:obj.LLVMTableGenBoth>
   $<TARGET_OBJECTS:obj.LLVMTableGenBasic>
 
   PARTIAL_SOURCES_INTENDED
@@ -32,10 +39,8 @@ set(LLVM_LINK_COMPONENTS
 add_tablegen(llvm-tblgen LLVM
   DESTINATION "${LLVM_TOOLS_INSTALL_DIR}"
   EXPORT LLVM
-  ARMTargetDefEmitter.cpp
   AsmMatcherEmitter.cpp
   AsmWriterEmitter.cpp
-  Attributes.cpp
   CallingConvEmitter.cpp
   CodeEmitterGen.cpp
   CodeGenMapTable.cpp
@@ -48,7 +53,6 @@ add_tablegen(llvm-tblgen LLVM
   DecoderEmitter.cpp
   DFAEmitter.cpp
   DFAPacketizerEmitter.cpp
-  DirectiveEmitter.cpp
   DisassemblerEmitter.cpp
   DXILEmitter.cpp
   ExegesisEmitter.cpp
@@ -57,25 +61,23 @@ add_tablegen(llvm-tblgen LLVM
   GlobalISelEmitter.cpp
   InstrDocsEmitter.cpp
   InstrInfoEmitter.cpp
-  IntrinsicEmitter.cpp
   MacroFusionPredicatorEmitter.cpp
   OptionParserEmitter.cpp
   OptionRSTEmitter.cpp
   PseudoLoweringEmitter.cpp
   RegisterBankEmitter.cpp
   RegisterInfoEmitter.cpp
-  RISCVTargetDefEmitter.cpp
   SearchableTableEmitter.cpp
   SubtargetEmitter.cpp
-  TableGen.cpp
-  VTEmitter.cpp
   WebAssemblyDisassemblerEmitter.cpp
   X86InstrMappingEmitter.cpp
   X86DisassemblerTables.cpp
   X86FoldTablesEmitter.cpp
   X86MnemonicTables.cpp
   X86ModRMFilters.cpp
   X86RecognizableInstr.cpp
+
+  $<TARGET_OBJECTS:obj.LLVMTableGenBoth>
   $<TARGET_OBJECTS:obj.LLVMTableGenBasic>
   $<TARGET_OBJECTS:obj.LLVMTableGenCommon>