[PATCH] D27705: [ARM] GlobalISel: Support i8/i16 ABI extensions

[Diana Picus via Phabricator via llvm-commits]

rovka created this revision.
rovka added reviewers: ab, qcolombet, t.p.northover.
rovka added subscribers: llvm-commits, rengolin, dsanders.
Herald added subscribers: dberris, vkalintiris, aemerson.

At the moment, this means supporting the signext/zeroext attribute on the return
type of the function. For function arguments, signext/zeroext should be handled
by the caller, so there's nothing for us to do until we start lowering calls.

Note that this does not include support for other extensions (i8 to i16), those will
be added later.


https://reviews.llvm.org/D27705

Files:
  lib/Target/ARM/ARMCallLowering.cpp
  lib/Target/ARM/ARMInstructionSelector.cpp
  lib/Target/ARM/ARMLegalizerInfo.cpp
  lib/Target/ARM/ARMRegisterBankInfo.cpp
  test/CodeGen/ARM/GlobalISel/arm-instruction-select.mir
  test/CodeGen/ARM/GlobalISel/arm-irtranslator.ll
  test/CodeGen/ARM/GlobalISel/arm-isel.ll
  test/CodeGen/ARM/GlobalISel/arm-legalizer.mir

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