[PATCH] D57493: [RISCV] Put data smaller than integer type to small data section

[Shiva Chen via Phabricator via llvm-commits]

shiva0217 created this revision.
shiva0217 added reviewers: asb, apazos.
Herald added subscribers: jocewei, PkmX, rkruppe, the_o, brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, jrtc27, kito-cheng, niosHD, sabuasal, simoncook, johnrusso, rbar.

Because of gp = sdata_start_address + 0x800, gp with signed twelve bits could covert most of the small data section.
Linker relaxation could transfer the data accessing instruction to single gp base with signed twelve bits instruction.


Repository:
  rL LLVM

https://reviews.llvm.org/D57493

Files:
  lib/Target/RISCV/RISCVTargetObjectFile.cpp
  lib/Target/RISCV/RISCVTargetObjectFile.h
  test/CodeGen/RISCV/sdata.ll

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