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Author SHA1 Message Date
Fangrui Song
3e7eab0997 [RISCV] RISCVELFTargetObjectFile: use 2-byte alignment for .text if RVC 
For the "C" Standard Extension/Zca, D45560 enabled 2-byte alignment for
assembly output (e.g. `clang -S a.c`) and D102052 enabled 2-byte alignment for
assembly input and object file output (e.g. `clang -c a.s`).

This patch ports the behavior for code generation and object file output by
adding RISCVELFTargetObjectFile::getTextSectionAlignment (e.g. `clang -c a.c`).

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D150240
 2023-05-11 13:44:37 -07:00
Craig Topper
29463612d2 [RISCV] Replace RISCV -> RISC-V in comments. NFC 
To be consistent with RISC-V branding guidelines
https://riscv.org/about/risc-v-branding-guidelines/
Think we should be using RISC-V where possible.

More patches will follow.

Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D146449
 2023-03-27 09:50:17 -07:00
Craig Topper
f96a7706d9 [Target] Use Align in TargetLoweringObjectFile::getSectionForConstant. 
Differential Revision: https://reviews.llvm.org/D80363
 2020-05-21 15:23:29 -07:00
Simon Pilgrim
022ba502c1 [RISCV] Remove unused forward declarations. NFC. 2020-04-23 16:30:45 +01:00
Shiva Chen
7cc03bd064 [RISCV] Put data smaller than eight bytes to small data section 
Because of gp = sdata_start_address + 0x800, gp with signed twelve-bit offset
could covert most of the small data section. Linker relaxation could transfer
the multiple data accessing instructions to a gp base with signed twelve-bit
offset instruction.

Differential Revision: https://reviews.llvm.org/D57493

llvm-svn: 358150
 2019-04-11 04:59:13 +00:00
Chandler Carruth
2946cd7010 Update the file headers across all of the LLVM projects in the monorepo 
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
 2019-01-19 08:50:56 +00:00
Mandeep Singh Grang
98bc25a0f2 [RISCV] Use init_array instead of ctors for RISCV target, by default 
Summary:
LLVM defaults to the newer .init_array/.fini_array scheme for static
constructors rather than the less desirable .ctors/.dtors (the UseCtors
flag defaults to false). This wasn't being respected in the RISC-V
backend because it fails to call TargetLoweringObjectFileELF::InitializeELF with the the appropriate
flag for UseInitArray.
This patch fixes this by implementing RISCVELFTargetObjectFile and overriding its Initialize method to call
InitializeELF(TM.Options.UseInitArray).

Reviewers: asb, apazos

Reviewed By: asb

Subscribers: mgorny, rbar, johnrusso, simoncook, jordy.potman.lists, sabuasal, niosHD, kito-cheng, shiva0217, llvm-commits

Differential Revision: https://reviews.llvm.org/D44750

llvm-svn: 328433
 2018-03-24 18:37:19 +00:00