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Changes Analysis: main to feature/debug/v18

This document summarizes all file changes from main to HEAD, organized by PR.

Already Merged (PRs #520-530)

These files were changed by PRs that have already been merged to main:

File PR
llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp #520
lldb/source/Utility/DataExtractor.cpp #521
lldb/tools/lldb-dap/Handler/LaunchRequestHandler.cpp #522
llvm/lib/CodeGen/GlobalISel/InlineAsmLowering.cpp #523
lldb/source/Utility/ArchSpec.cpp #524
clang/lib/Driver/ToolChains/MOSToolchain.cpp #525
lld/ELF/Arch/MOS.cpp #526
llvm/lib/Target/MOS/MCTargetDesc/MOSAsmBackend.cpp #527
llvm/lib/Target/MOS/MOSISelLowering.cpp #528
llvm/lib/Target/MOS/MOSISelLowering.h #528
llvm/lib/Target/MOS/MOSMachineFunctionInfo.h #529 (clone only)
llvm/lib/Target/MOS/MOSLegalizerInfo.cpp #530 (FP libcalls only)

Also merged via PR #516 (not debug-related):

  • .github/workflows/llvm-project-tests.yml
  • llvm/lib/Target/MOS/AsmParser/MOSAsmParser.cpp
  • llvm/lib/Target/MOS/MCTargetDesc/MOSMCExpr.cpp
  • llvm/test/MC/MOS/modifiers.s

Pending Changes by PR

PR 12: Legalizer Terminal Actions

File Change
llvm/lib/Target/MOS/MOSLegalizerInfo.cpp Add .unsupported() to G_BSWAP and FP op chains
llvm/test/CodeGen/MOS/legalizer.mir NEW: Test for legalizer rules

PR 13: i32 Depth Argument Fix

File Change
clang/lib/CodeGen/CGBuiltin.cpp Cast depth arg to i32 for returnaddress/frameaddress

PR 14: lld .debug_frame GC

File Change
lld/ELF/Config.h Add DebugFrameInputSection, DebugFrameSection declarations
lld/ELF/Driver.cpp Collect DebugFrameInputSections, call combineDebugFrameSections()
lld/ELF/InputFiles.cpp Create DebugFrameInputSection for .debug_frame
lld/ELF/InputSection.cpp Implement DebugFrameInputSection::split()
lld/ELF/InputSection.h Define DebugFrameInputSection class
lld/ELF/SyntheticSections.cpp Implement DebugFrameSection synthetic section
lld/ELF/SyntheticSections.h Declare DebugFrameSection, combineDebugFrameSections()
lld/ELF/Writer.cpp Finalize .debug_frame early

PR 15: CFI Expression Support

File Change
llvm/include/llvm/MC/MCDwarf.h Add OpDefCfaExpression, OpExpression, OpValExpression
llvm/lib/MC/MCDwarf.cpp Emit CFI expression instructions
llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp Print CFI expressions
llvm/lib/CodeGen/CFIInstrInserter.cpp Handle expression types (no-op)
llvm/lib/CodeGen/MachineOperand.cpp MIR printing for CFI expressions
llvm/lib/CodeGen/MIRParser/MILexer.h Token types for CFI keywords
llvm/lib/CodeGen/MIRParser/MILexer.cpp Lex CFI keywords
llvm/lib/CodeGen/MIRParser/MIParser.cpp Parse CFI instructions
llvm/lib/DWARFCFIChecker/DWARFCFIState.cpp Warn for unsupported expressions

PR 16: AsmPrinter Defer Init

File Change
llvm/include/llvm/CodeGen/AsmPrinter.h Add shouldCallBeginModule(), callBeginModule()
llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp Implement deferred initialization

PR 17: G_MERGE_VALUES Salvaging

File Change
llvm/lib/CodeGen/CodeGenCommonISel.cpp Add salvageDebugInfo for G_MERGE_VALUES
llvm/lib/CodeGen/GlobalISel/Utils.cpp Call salvageDebugInfo in eraseInstrs()
llvm/test/CodeGen/X86/GlobalISel/x86-calllowering-dbg-trunc.ll Update test expectations

PR 18: LLDB ABI Extension Points

File Change
lldb/include/lldb/Target/ABI.h Add CreateRegisterContextForThread, ProvidesRegisterInfoOverride, GetCanonicalRegisterInfo
lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp Check for ABI register info override
lldb/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp Check for ABI-provided register context
lldb/source/Plugins/Process/gdb-remote/ThreadGDBRemote.h Add GetRegisterInfoSP()

DO NOT INCLUDE: | lldb/source/Symbol/DWARFCallFrameInfo.cpp | Debug logging only - REVERT |

PR 19: MOS DWARF/CFI Support

File Change
llvm/lib/Target/MOS/MOSRegisterInfo.td DWARF register numbers, add PC register
llvm/lib/Target/MOS/MCTargetDesc/MOSMCAsmInfo.cpp Set CalleeSaveStackSlotSize, ExceptionsType
llvm/lib/Target/MOS/MCTargetDesc/MOSMCTargetDesc.cpp Initial CFI frame state, RA register setup
llvm/lib/Target/MOS/MOSFrameLowering.cpp CFI emission, getFrameIndexReference, stack diagnostics
llvm/lib/Target/MOS/MOSFrameLowering.h Declare new methods
llvm/lib/Target/MOS/MOSAsmPrinter.cpp Override shouldCallBeginModule, null check for streamer
llvm/lib/TargetParser/Triple.cpp Add MOS to getDefaultExceptionHandling
llvm/test/CodeGen/MOS/large-stack-frame.ll NEW: Stack size limit test
llvm/test/CodeGen/MOS/prologepilog-ir.mir NEW: CFI emission MIR test
llvm/test/CodeGen/MOS/prologepilog.mir NEW: CFI emission MIR test
llvm/test/CodeGen/MOS/zp-alloc.ll Updated CHECK lines for CFI

PR 20: MOS LLDB Plugin

File Change
lldb/source/Plugins/ABI/CMakeLists.txt Add MOS to ABI plugins
lldb/source/Plugins/ABI/MOS/ABISysV_mos.cpp NEW: Main ABI implementation
lldb/source/Plugins/ABI/MOS/ABISysV_mos.h NEW: Header
lldb/source/Plugins/ABI/MOS/CMakeLists.txt NEW: Build config
lldb/source/Plugins/ABI/MOS/MOSImaginaryRegisters.cpp NEW: Imaginary register definitions
lldb/source/Plugins/ABI/MOS/MOSImaginaryRegisters.h NEW: Header
lldb/source/Plugins/ABI/MOS/MOSRegisterContext.cpp NEW: Custom register context
lldb/source/Plugins/ABI/MOS/MOSRegisterContext.h NEW: Header

PR 21: MOS Builtins

File Change
llvm/lib/Target/MOS/MOSFrameLowering.cpp Return address capture in prologue, CFI fixes
llvm/lib/Target/MOS/MOSFrameLowering.h Add getHardwareStackBase declaration
llvm/lib/Target/MOS/MOSLegalizerInfo.cpp Custom lowering for G_RETURNADDRESS, G_FRAMEADDRESS
llvm/lib/Target/MOS/MOSMachineFunctionInfo.h Add getReturnAddrFrameIndex
llvm/lib/Target/MOS/MOSSubtarget.h Add getHardwareStackBase
clang/test/CodeGen/MOS/builtin-frame-address.c NEW: Clang test
llvm/test/CodeGen/MOS/frame-pointer-cfi.ll NEW: CFI test for frame pointer

PR 22: Test Infrastructure

File Change
llvm/test/lit.cfg.py Add MOS feature flags
llvm/test/CodeGen/Generic/2002-04-16-StackFrameSizeAlignment.ll UNSUPPORTED: small-address-space
llvm/test/CodeGen/Generic/2007-04-08-MultipleFrameIndices.ll UNSUPPORTED: limited-inline-asm
llvm/test/CodeGen/Generic/2007-04-27-InlineAsm-X-Dest.ll UNSUPPORTED: limited-inline-asm
llvm/test/CodeGen/Generic/2007-04-27-LargeMemObject.ll UNSUPPORTED: limited-inline-asm
llvm/test/CodeGen/Generic/2007-12-17-InvokeAsm.ll UNSUPPORTED: no-invoke-support
llvm/test/CodeGen/Generic/2009-11-16-BadKillsCrash.ll UNSUPPORTED: no-invoke-support
llvm/test/CodeGen/Generic/2012-06-08-APIntCrash.ll UNSUPPORTED: no-vector-legalization
llvm/test/CodeGen/Generic/MachineBranchProb.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/CodeGen/Generic/add-with-overflow.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/allow-check.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/denormal-fp-math-cl-opt.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/donothing.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/extractelement-shuffle.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/fpowi-promote.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/inline-asm-mem-clobber.ll UNSUPPORTED: limited-inline-asm
llvm/test/CodeGen/Generic/pr24662.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/select-cc.ll UNSUPPORTED: global-isel-only
llvm/test/CodeGen/Generic/selectiondag-dump-filter.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/CodeGen/Generic/v-split.ll UNSUPPORTED: no-vector-legalization
llvm/test/CodeGen/Generic/vector-casts.ll UNSUPPORTED: no-vector-legalization
llvm/test/CodeGen/Generic/vector.ll UNSUPPORTED: no-vector-legalization
llvm/test/DebugInfo/Generic/debug-label-mi.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/DebugInfo/Generic/debug-label-opt.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/DebugInfo/Generic/directives-only.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/DebugInfo/Generic/extended-loc-directive.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/DebugInfo/Generic/linear-dbg-value.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/DebugInfo/Generic/multiline.ll UNSUPPORTED: no-selectiondag-debug
llvm/test/DebugInfo/debug-bool-const-location.ll UNSUPPORTED: target=mos
llvm/test/DebugInfo/fixed-point.ll UNSUPPORTED: target=mos
llvm/test/Feature/optnone-llc.ll UNSUPPORTED: global-isel-only
llvm/unittests/DebugInfo/DWARF/DwarfUtils.cpp Return UnknownArch for 16-bit archs

PR 23: Jump Table Test

File Change
llvm/test/CodeGen/MOS/jump-table-limit.ll NEW: 256-entry switch test

PR 24: Distribution

File Change
clang/cmake/caches/MOS.cmake Add lldb, lldb-dap, llvm-config, etc. to distribution

Files to NOT Submit

File Reason
lldb/source/Symbol/DWARFCallFrameInfo.cpp Debug logging only

Files with Multiple PRs

Some files are modified by multiple PRs. When creating PR branches, extract only the relevant changes:

File PRs Notes
llvm/lib/Target/MOS/MOSLegalizerInfo.cpp 12, 21 PR 12: terminal actions; PR 21: builtin lowering
llvm/lib/Target/MOS/MOSFrameLowering.cpp 19, 21 PR 19: CFI emission; PR 21: return addr capture
llvm/lib/Target/MOS/MOSFrameLowering.h 19, 21 PR 19: getFrameIndexReference; PR 21: getHardwareStackBase
llvm/lib/Target/MOS/MOSMachineFunctionInfo.h (merged), 21 #529: clone(); PR 21: getReturnAddrFrameIndex
llvm/lib/Target/MOS/MOSAsmPrinter.cpp 19 shouldCallBeginModule + null check