llvm-project/llvm/lib/Target/Mips/MCTargetDesc/CMakeLists.txt

add_llvm_library(LLVMMipsDesc
  MipsMCTargetDesc.cpp
  MipsMCAsmInfo.cpp
  )
add_dependencies(LLVMMipsDesc MipsCommonTableGen)

target_link_libraries(LLVMMipsDesc LLVMMipsAsmPrinter)
Rename createAsmInfo to createMCAsmInfo and move registration code to MCTargetDesc to prepare for next round of changes. llvm-svn: 135219 2011-07-15 07:50:31 +08:00			`add_llvm_library(LLVMMipsDesc`
			`MipsMCTargetDesc.cpp`
			`MipsMCAsmInfo.cpp`
			`)`
Clean up a pile of hacks in our CMake build relating to TableGen. The first problem to fix is to stop creating synthetic Table_gen targets next to all of the LLVM libraries. These had no real effect as CMake specifies that add_custom_command(OUTPUT ...) directives (what the 'tablegen(...)' stuff expands to) are implicitly added as dependencies to all the rules in that CMakeLists.txt. These synthetic rules started to cause problems as we started more and more heavily using tablegen files from subdirectories* of the one where they were generated. Within those directories, the set of tablegen outputs was still available and so these synthetic rules added them as dependencies of those subdirectories. However, they were no longer properly associated with the custom command to generate them. Most of the time this "just worked" because something would get to the parent directory first, and run tablegen there. Once run, the files existed and the build proceeded happily. However, as more and more subdirectories have started using this, the probability of this failing to happen has increased. Recently with the MC refactorings, it became quite common for me when touching a large enough number of targets. To add insult to injury, several of the backends tried to fix this by adding explicit dependencies back to the parent directory's tablegen rules, but those dependencies didn't work as expected -- they weren't forming a linear chain, they were adding another thread in the race. This patch removes these synthetic rules completely, and adds a much simpler function to declare explicitly that a collection of tablegen'ed files are referenced by other libraries. From that, we can add explicit dependencies from the smaller libraries (such as every architectures Desc library) on this and correctly form a linear sequence. All of the backends are updated to use it, sometimes replacing the existing attempt at adding a dependency, sometimes adding a previously missing dependency edge. Please let me know if this causes any problems, but it fixes a rather persistent and problematic source of build flakiness on our end. llvm-svn: 136023 2011-07-26 08:09:08 +08:00			`add_dependencies(LLVMMipsDesc MipsCommonTableGen)`
Explicitly declare a library dependency of LLVMDesc to LLVMAsmPrinter. GenLibDeps.pl fails to detect vtable references. As this is the only referenced symbol from LLVMDesc to LLVMAsmPrinter on optimized builds, the algorithm that creates the list of libraries to be linked into tools doesn't know about the dependency and sometimes places the libraries on the wrong order, yielding error messages like this: ../../lib/libLLVMARMDesc.a(ARMMCTargetDesc.cpp.o): In function `llvm::ARMInstPrinter::ARMInstPrinter(llvm::MCAsmInfo const&)': ARMMCTargetDesc.cpp:(.text._ZN4llvm14ARMInstPrinterC1ERKNS_9MCAsmInfoE [llvm::ARMInstPrinter::ARMInstPrinter(llvm::MCAsmInfo const&)]+0x2a): undefined reference to `vtable for llvm::ARMInstPrinter' llvm-svn: 136328 2011-07-28 10:33:52 +08:00
			`target_link_libraries(LLVMMipsDesc LLVMMipsAsmPrinter)`