[PATCH] D46424: [RISCV] Support .option push and .option pop

[Simon Cook via Phabricator via llvm-commits]

simoncook created this revision.
simoncook added reviewers: asb, edward-jones.
Herald added subscribers: llvm-commits, mgrang, zzheng, shiva0217, kito-cheng, niosHD, sabuasal, apazos, jordy.potman.lists, johnrusso, rbar.
simoncook added a dependency: D46423: [RISCV] Support .option relax and .option norelax.

This adds support in the RISCVAsmParser the storing of Subtarget feature bits to a stack so that they can be pushed/popped to enable/disable multiple features at once.


Repository:
  rL LLVM

https://reviews.llvm.org/D46424

Files:
  lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.h
  lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVTargetStreamer.h
  test/MC/RISCV/option-invalid.s
  test/MC/RISCV/option-pushpop.s

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