[PATCH] D104877: [ARM] Set the immediate cost of GEP operands to 0

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: SjoerdMeijer, samtebbs, NickGuy, ostannard, simon_tatham.
Herald added subscribers: danielkiss, hiraditya, kristof.beyls.
dmgreen requested review of this revision.
Herald added a project: LLVM.

This prevents constant gep operands from being hoisted by the Constant Hoisting pass, leaving them to CodegenPrepare which can usually do a better job at splitting large offsets. This can, in general, improve performance and decrease codesize, especially for v6m where many constants have a high cost.


https://reviews.llvm.org/D104877

Files:
  llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
  llvm/test/CodeGen/ARM/gep-imm.ll

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