[PATCH] D55421: FastISel: take care to update iterators when removing instructions.

[Tim Northover via Phabricator via llvm-commits]

t.p.northover created this revision.
Herald added subscribers: jsji, kbarton, hiraditya, javed.absar, nemanjai, mcrosier.

We keep a few iterators into the basic block we're selecting while performing FastISel. Usually this is fine, but occasionally code wants to remove already-emitted instructions. When this happens we have to be careful to update those iterators so they're not pointint at dangling memory.


Repository:
  rL LLVM

https://reviews.llvm.org/D55421

Files:
  llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
  llvm/lib/Target/AArch64/AArch64FastISel.cpp
  llvm/lib/Target/ARM/ARMFastISel.cpp
  llvm/lib/Target/PowerPC/PPCFastISel.cpp
  llvm/lib/Target/X86/X86FastISel.cpp
  llvm/test/CodeGen/AArch64/fast-isel-erase.ll

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