[all-commits] [llvm/llvm-project] 742043: Recommit "Add a heap alloc site marker field to th...

[Amy Huang via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 742043047c973999eac7734e53f7872973933f24
      https://github.com/llvm/llvm-project/commit/742043047c973999eac7734e53f7872973933f24
  Author: Amy Huang <akhuang at google.com>
  Date:   2019-10-28 (Mon, 28 Oct 2019)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineFunction.h
    M llvm/include/llvm/CodeGen/MachineInstr.h
    M llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    M llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
    M llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
    M llvm/lib/CodeGen/MachineFunction.cpp
    M llvm/lib/CodeGen/MachineInstr.cpp
    M llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
    M llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
    M llvm/test/CodeGen/X86/label-heapallocsite.ll
    M llvm/test/CodeGen/X86/taildup-heapallocsite.ll
    M llvm/unittests/CodeGen/MachineInstrTest.cpp

  Log Message:
  -----------
  Recommit "Add a heap alloc site marker field to the ExtraInfo in MachineInstrs"

Summary:
Fixes some things from original commit at https://reviews.llvm.org/D69136. The main
change is that the heap alloc marker is always stored as ExtraInfo in the machine
instruction instead of in the PointerSumType because it cannot hold more than
4 pointer types.

Add instruction marker to MachineInstr ExtraInfo. This does almost the
same thing as Pre/PostInstrSymbols, except that it doesn't create a label until
printing instructions. This allows for labels to be put around instructions that
are deleted/duplicated somewhere.
Use this marker to track heap alloc site call instructions.

Reviewers: rnk

Subscribers: MatzeB, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69536