[PATCH] D105738: Mips: Mark special case calling convention handling as custom

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: dsanders, atanasyan, ahatanak, sdardis.
Herald added subscribers: jrtc27, hiraditya, arichardson.
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The number of registers used for passing f64 in some cases is context
dependent, and thus getNumRegistersForCallingConv is sometimes
inaccurate. For f64, it reports 1 but is sometimes split into 2 32-bit
registers.

      

For GlobalISel, the generic argument assignment code expects
getNumRegistersForCallingConv to return an accurate answer. Switch to
marking these arguments as custom so we can deal with this case as a
custom assignment rather.

      

This temporarily breaks a few globalisel tests which are fixed by a
future change to use more of the generic infrastructure.


https://reviews.llvm.org/D105738

Files:
  llvm/lib/Target/Mips/MipsISelLowering.cpp
  llvm/test/CodeGen/Mips/GlobalISel/irtranslator/float_args.ll
  llvm/test/CodeGen/Mips/GlobalISel/llvm-ir/float_args.ll

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