llvm-6502/lib/Target/ARM/CMakeLists.txt

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CMake
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set(LLVM_TARGET_DEFINITIONS ARM.td)
tablegen(ARMGenRegisterInfo.inc -gen-register-info)
tablegen(ARMGenInstrInfo.inc -gen-instr-info)
tablegen(ARMGenCodeEmitter.inc -gen-emitter)
tablegen(ARMGenMCCodeEmitter.inc -gen-emitter -mc-emitter)
tablegen(ARMGenMCPseudoLowering.inc -gen-pseudo-lowering)
tablegen(ARMGenAsmWriter.inc -gen-asm-writer)
tablegen(ARMGenAsmMatcher.inc -gen-asm-matcher)
tablegen(ARMGenDAGISel.inc -gen-dag-isel)
tablegen(ARMGenFastISel.inc -gen-fast-isel)
tablegen(ARMGenCallingConv.inc -gen-callingconv)
tablegen(ARMGenSubtargetInfo.inc -gen-subtarget)
tablegen(ARMGenEDInfo.inc -gen-enhanced-disassembly-info)
tablegen(ARMGenDecoderTables.inc -gen-arm-decoder)
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136023 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-26 00:09:08 +00:00
add_public_tablegen_target(ARMCommonTableGen)
add_llvm_target(ARMCodeGen
ARMAsmPrinter.cpp
ARMBaseInstrInfo.cpp
ARMBaseRegisterInfo.cpp
ARMCodeEmitter.cpp
ARMConstantIslandPass.cpp
ARMConstantPoolValue.cpp
ARMELFWriterInfo.cpp
ARMExpandPseudoInsts.cpp
ARMFastISel.cpp
ARMFrameLowering.cpp
ARMGlobalMerge.cpp
Making use of VFP / NEON floating point multiply-accumulate / subtraction is difficult on current ARM implementations for a few reasons. 1. Even though a single vmla has latency that is one cycle shorter than a pair of vmul + vadd, a RAW hazard during the first (4? on Cortex-a8) can cause additional pipeline stall. So it's frequently better to single codegen vmul + vadd. 2. A vmla folowed by a vmul, vmadd, or vsub causes the second fp instruction to stall for 4 cycles. We need to schedule them apart. 3. A vmla followed vmla is a special case. Obvious issuing back to back RAW vmla + vmla is very bad. But this isn't ideal either: vmul vadd vmla Instead, we want to expand the second vmla: vmla vmul vadd Even with the 4 cycle vmul stall, the second sequence is still 2 cycles faster. Up to now, isel simply avoid codegen'ing fp vmla / vmls. This works well enough but it isn't the optimial solution. This patch attempts to make it possible to use vmla / vmls in cases where it is profitable. A. Add missing isel predicates which cause vmla to be codegen'ed. B. Make sure the fmul in (fadd (fmul)) has a single use. We don't want to compute a fmul and a fmla. C. Add additional isel checks for vmla, avoid cases where vmla is feeding into fp instructions (except for the #3 exceptional case). D. Add ARM hazard recognizer to model the vmla / vmls hazards. E. Add a special pre-regalloc case to expand vmla / vmls when it's likely the vmla / vmls will trigger one of the special hazards. Work in progress, only A+B are enabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120960 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-05 22:04:16 +00:00
ARMHazardRecognizer.cpp
ARMISelDAGToDAG.cpp
ARMISelLowering.cpp
ARMInstrInfo.cpp
ARMJITInfo.cpp
ARMLoadStoreOptimizer.cpp
ARMMCInstLower.cpp
ARMRegisterInfo.cpp
ARMSelectionDAGInfo.cpp
ARMSubtarget.cpp
ARMTargetMachine.cpp
ARMTargetObjectFile.cpp
MLxExpansionPass.cpp
NEONMoveFix.cpp
Thumb1InstrInfo.cpp
Thumb1FrameLowering.cpp
Thumb1RegisterInfo.cpp
Thumb2ITBlockPass.cpp
Thumb2InstrInfo.cpp
Thumb2RegisterInfo.cpp
Thumb2SizeReduction.cpp
)
# workaround for hanging compilation on MSVC10
if( MSVC_VERSION EQUAL 1600 )
set_property(
SOURCE ARMISelLowering.cpp
PROPERTY COMPILE_FLAGS "/Od"
)
endif()
add_subdirectory(TargetInfo)
add_subdirectory(AsmParser)
add_subdirectory(Disassembler)
add_subdirectory(InstPrinter)
add_subdirectory(MCTargetDesc)