Yonghong Song 90ca961862 bpf: add missing RegState to notify MachineInstr verifier necessary register usage ... Errors like the following are reported by: https://urldefense.proofpoint.com/v2/url?u=http-3A__lab.llvm.org-3A8011_builders_llvm-2Dclang-2Dx86-5F64-2Dexpensive-2Dchecks-2Dwin_builds_11261&d=DwIBAg&c=5VD0RTtNlTh3ycd41b3MUw&r=DA8e1B5r073vIqRrFz7MRA&m=929oWPCf7Bf2qQnir4GBtowB8ZAlIRWsAdTfRkDaK-g&s=9k-wbEUVpUm474hhzsmAO29VXVvbxJPWD9RTgCD71fQ&e= *** Bad machine code: Explicit definition marked as use *** - function: cal_align1 - basic block: %bb.0 entry (0x47edd98) - instruction: LDB $r3, $r2, 0 - operand 0: $r3 This is because RegState info was missing for ScratchReg inside expandMEMCPY. This caused incomplete register usage information to MachineInstr verifier which then would complain as there could be potential code-gen issue if the complained MachineInstr is used in place where register usage information matters even though the memcpy expanding is not in such case as it happens at the last stage of IR optimization pipeline. We should always specify those register usage information which compiler couldn't deduct automatically whenever we add a hardware register manually. Reported-by: Builder llvm-clang-x86_64-expensive-checks-win Build #11261 Signed-off-by: Jiong Wang <jiong.wang@netronome.com> Reviewed-by: Yonghong Song <yhs@fb.com> llvm-svn: 338134		2018-07-27 16:58:52 +00:00
..
AsmParser	bpf: signal error instead of silent drop for certain invalid asm insn	2018-04-11 20:24:52 +00:00
Disassembler	bpf: New decoder namespace for 32-bit subregister load/store	2018-02-23 23:49:31 +00:00
InstPrinter	Remove some unused includes to fix layering.	2018-03-29 00:29:45 +00:00
MCTargetDesc	[MC] Pass MCSubtargetInfo to fixupNeedsRelaxation and applyFixup	2018-06-06 09:40:06 +00:00
TargetInfo	Add backend name to Target to enable runtime info to be fed back into TableGen	2017-11-15 23:55:44 +00:00
BPF.h	bpf: New post-RA peephole optimization pass to eliminate bad RA codegen	2018-03-13 06:47:06 +00:00
BPF.td	bpf: introduce -mattr=dwarfris to disable DwarfUsesRelocationsAcrossSections	2018-03-01 23:04:59 +00:00
BPFAsmPrinter.cpp
BPFCallingConv.td	bpf: New calling convention for 32-bit subregisters	2018-02-23 23:49:23 +00:00
BPFFrameLowering.cpp
BPFFrameLowering.h	Move TargetFrameLowering.h to CodeGen where it's implemented	2017-11-03 22:32:11 +00:00
BPFInstrFormats.td
BPFInstrInfo.cpp	bpf: add missing RegState to notify MachineInstr verifier necessary register usage	2018-07-27 16:58:52 +00:00
BPFInstrInfo.h	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
BPFInstrInfo.td	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
BPFISelDAGToDAG.cpp	Rename DEBUG macro to LLVM_DEBUG.	2018-05-14 12:53:11 +00:00
BPFISelLowering.cpp	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
BPFISelLowering.h	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
BPFMCInstLower.cpp
BPFMCInstLower.h
BPFMIPeephole.cpp	Rename DEBUG macro to LLVM_DEBUG.	2018-05-14 12:53:11 +00:00
BPFRegisterInfo.cpp	bpf: Use markSuperRegs to mark reserved registers	2018-02-23 23:49:18 +00:00
BPFRegisterInfo.h	[BPF] Return true in enableMultipleCopyHints().	2018-02-18 10:09:54 +00:00
BPFRegisterInfo.td
BPFSelectionDAGInfo.cpp	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
BPFSelectionDAGInfo.h	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
BPFSubtarget.cpp	bpf: introduce -mattr=dwarfris to disable DwarfUsesRelocationsAcrossSections	2018-03-01 23:04:59 +00:00
BPFSubtarget.h	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
BPFTargetMachine.cpp	bpf: New post-RA peephole optimization pass to eliminate bad RA codegen	2018-03-13 06:47:06 +00:00
BPFTargetMachine.h	Revert "TargetMachine: Merge TargetMachine and LLVMTargetMachine"	2017-10-12 22:57:28 +00:00
CMakeLists.txt	bpf: new option -bpf-expand-memcpy-in-order to expand memcpy in order	2018-07-25 22:40:02 +00:00
LLVMBuild.txt