[PATCH] D41949: [RISCV] [WIP] implement li pseudo instruction

[Mario Werner via Phabricator via llvm-commits]

niosHD updated this revision to Diff 132139.
niosHD edited the summary of this revision.
niosHD added a comment.
Herald added subscribers: hintonda, mgorny.

Moved the shared emitLoadImm methods to a free function into the RISCVDesc library. Additionally, the Size of the pseudo instruction has been set to 8 (worst case for RV32) to ensure proper branch relaxation. Finally, the pattern for 32-bit immediate integers has been updated to generate PseudoLI and the tests have been updated accordingly.

I am going to add support for 64-bit constants next in order to get rid of the WIP tag. Nevertheless, comments are of course still welcome.


https://reviews.llvm.org/D41949

Files:
  lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
  lib/Target/RISCV/MCTargetDesc/CMakeLists.txt
  lib/Target/RISCV/MCTargetDesc/RISCVMCPseudoExpansion.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVMCPseudoExpansion.h
  lib/Target/RISCV/RISCVAsmPrinter.cpp
  lib/Target/RISCV/RISCVInstrFormats.td
  lib/Target/RISCV/RISCVInstrInfo.cpp
  lib/Target/RISCV/RISCVInstrInfo.td
  test/CodeGen/RISCV/bswap-ctlz-cttz-ctpop.ll
  test/CodeGen/RISCV/calling-conv.ll
  test/CodeGen/RISCV/mem.ll
  test/CodeGen/RISCV/vararg.ll
  test/MC/RISCV/rv32i-aliases-invalid.s
  test/MC/RISCV/rv64i-aliases-invalid.s
  test/MC/RISCV/rvi-aliases-valid.s

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