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llvm-project/llvm/lib/Target/BPF
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Yonghong Song 37d24a696b [BPF] Handling type conversions correctly for CO-RE 
With newly added debuginfo type
metadata for preserve_array_access_index() intrinsic,
this patch did the following two things:
 (1). checking validity before adding a new access index
      to the access chain.
 (2). calculating access byte offset in IR phase
      BPFAbstractMemberAccess instead of when BTF is emitted.

For (1), the metadata provided by all preserve_*_access_index()
intrinsics are used to check whether the to-be-added type
is a proper struct/union member or array element.

For (2), with all available metadata, calculating access byte
offset becomes easier in BPFAbstractMemberAccess IR phase.
This enables us to remove the unnecessary complexity in
BTFDebug.cpp.

New tests are added for
  . user explicit casting to array/structure/union
  . global variable (or its dereference) as the source of base
  . multi demensional arrays
  . array access given a base pointer
  . cases where we won't generate relocation if we cannot find
    type name.

Differential Revision: https://reviews.llvm.org/D65618

llvm-svn: 367735
 		2019-08-02 23:16:44 +00:00
..
AsmParser Revert CMake: Make most target symbols hidden by default 2019-06-11 03:21:13 +00:00
Disassembler Revert CMake: Make most target symbols hidden by default 2019-06-11 03:21:13 +00:00
MCTargetDesc Revert CMake: Make most target symbols hidden by default 2019-06-11 03:21:13 +00:00
TargetInfo Revert CMake: Make most target symbols hidden by default 2019-06-11 03:21:13 +00:00
BPF.h [BPF] Support for compile once and run everywhere 2019-07-09 15:28:41 +00:00
BPF.td [BPF] add code-gen support for JMP32 instructions 2019-02-07 10:43:09 +00:00
BPFAbstractMemberAccess.cpp [BPF] Handling type conversions correctly for CO-RE 2019-08-02 23:16:44 +00:00
BPFAsmPrinter.cpp [BPF] Support for compile once and run everywhere 2019-07-09 15:28:41 +00:00
BPFCORE.h [BPF] Support for compile once and run everywhere 2019-07-09 15:28:41 +00:00
BPFCallingConv.td Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFFrameLowering.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFFrameLowering.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFISelDAGToDAG.cpp Finish moving TargetRegisterInfo::isVirtualRegister() and friends to llvm::Register as started by r367614. NFC 2019-08-01 23:27:28 +00:00
BPFISelLowering.cpp [BPF] add code-gen support for JMP32 instructions 2019-02-07 10:43:09 +00:00
BPFISelLowering.h [TargetLowering] Change getOptimalMemOpType to take a function attribute list 2019-04-30 08:38:12 +00:00
BPFInstrFormats.td [BPF] add code-gen support for JMP32 instructions 2019-02-07 10:43:09 +00:00
BPFInstrInfo.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFInstrInfo.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFInstrInfo.td bpf: enable sub-register code-gen for XADD 2019-02-28 19:21:28 +00:00
BPFMCInstLower.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFMCInstLower.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFMIChecking.cpp bpf: enable sub-register code-gen for XADD 2019-02-28 19:21:28 +00:00
BPFMIPeephole.cpp Finish moving TargetRegisterInfo::isVirtualRegister() and friends to llvm::Register as started by r367614. NFC 2019-08-01 23:27:28 +00:00
BPFMISimplifyPatchable.cpp [BPF] Support for compile once and run everywhere 2019-07-09 15:28:41 +00:00
BPFRegisterInfo.cpp CodeGen: Introduce a class for registers 2019-06-24 15:50:29 +00:00
BPFRegisterInfo.h CodeGen: Introduce a class for registers 2019-06-24 15:50:29 +00:00
BPFRegisterInfo.td Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFSelectionDAGInfo.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFSelectionDAGInfo.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BPFSubtarget.cpp [BPF] add code-gen support for JMP32 instructions 2019-02-07 10:43:09 +00:00
BPFSubtarget.h [BPF] add code-gen support for JMP32 instructions 2019-02-07 10:43:09 +00:00
BPFTargetMachine.cpp [BPF] Support for compile once and run everywhere 2019-07-09 15:28:41 +00:00
BPFTargetMachine.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BTF.def [BPF] Add BTF Var and DataSec Support 2019-03-16 15:36:31 +00:00
BTF.h [BPF] Support for compile once and run everywhere 2019-07-09 15:28:41 +00:00
BTFDebug.cpp [BPF] Handling type conversions correctly for CO-RE 2019-08-02 23:16:44 +00:00
BTFDebug.h [BPF] Handling type conversions correctly for CO-RE 2019-08-02 23:16:44 +00:00
CMakeLists.txt [BPF] Fix a typo in the file name 2019-07-09 18:35:46 +00:00
LLVMBuild.txt [BPF] Move InstPrinter files to MCTargetDesc. NFC 2019-05-11 01:13:21 +00:00