[PATCH] D150196: [LoongArch] Remove AssemblerPredicate for features: f/d/lsx/lasx/lvz/lbt

[Lu Weining via Phabricator via llvm-commits]

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Linux LoongArch port [1] uses `-msoft-float` (implies no FPU) in its
`cflags` while it also uses floating-point insns in asm sources [2].
GAS allows this usage while IAS currently does not.

This patch removes `AssemblerPredicate`s for floating-point insns so
that to make IAS compitable with GAS. Similarly, also remove
`AssemblerPredicate`s for other ISA extensions, i.e. lsx/las/lvz/lbt.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/loongarch/Makefile?h=v6.4-rc1#n49
[2]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/loongarch/kernel/fpu.S?h=v6.4-rc1#n29


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D150196

Files:
  llvm/lib/Target/LoongArch/LoongArch.td
  llvm/test/MC/LoongArch/Basic/Float/d-arith.s
  llvm/test/MC/LoongArch/Basic/Float/d-bound-check.s
  llvm/test/MC/LoongArch/Basic/Float/d-branch.s
  llvm/test/MC/LoongArch/Basic/Float/d-comp.s
  llvm/test/MC/LoongArch/Basic/Float/d-conv.s
  llvm/test/MC/LoongArch/Basic/Float/d-invalid.s
  llvm/test/MC/LoongArch/Basic/Float/d-memory.s
  llvm/test/MC/LoongArch/Basic/Float/d-move.s
  llvm/test/MC/LoongArch/Basic/Float/f-arith.s
  llvm/test/MC/LoongArch/Basic/Float/f-bound-check.s
  llvm/test/MC/LoongArch/Basic/Float/f-branch.s
  llvm/test/MC/LoongArch/Basic/Float/f-comp.s
  llvm/test/MC/LoongArch/Basic/Float/f-conv.s
  llvm/test/MC/LoongArch/Basic/Float/f-invalid.s
  llvm/test/MC/LoongArch/Basic/Float/f-memory.s
  llvm/test/MC/LoongArch/Basic/Float/f-move.s
  llvm/test/MC/LoongArch/Basic/Integer/invalid.s

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