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2 Commits

Author SHA1 Message Date
Ana Pazos
27c2ad3f35 [RISCV] Allow access to FP CSRs without F extension
Summary:
Floating-point CSRs should be accessible even when F extension is not enabled.
But pseudo instructions that access floating point CSRs still require the F extension.
GNU tools already implement this behavior. RISC-V spec is pending update to reflect
this behavior and to extend it to pseudo instructions that access floating point CSRs.

Reviewers: asb

Reviewed By: asb

Subscribers: asb, rbar, johnrusso, simoncook, sabuasal, niosHD, kito-cheng, shiva0217, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, llvm-commits

Differential Revision: https://reviews.llvm.org/D58932

llvm-svn: 355753
2019-03-08 23:01:08 +00:00
Ana Pazos
c6b3072fd0 [RISCV] Support named operands for CSR instructions.
Reviewers: asb, mgrang

Reviewed By: asb

Subscribers: jocewei, mgorny, jfb, PkmX, MartinMosbeck, brucehoult, the_o, rkruppe, rogfer01, rbar, johnrusso, simoncook, jordy.potman.lists, sabuasal, niosHD, kito-cheng, shiva0217, zzheng, edward-jones

Differential Revision: https://reviews.llvm.org/D46759

llvm-svn: 343822
2018-10-04 21:50:54 +00:00