Commit Graph

7 Commits

Author SHA1 Message Date
Luís Marques e332a09619 [RISCV][NFC] Trivial cleanup
Fix a typo. Remove two seemingly out-of-date TODO comments.
2019-12-17 11:44:35 +00:00
Sam Elliott d57de491be [RISCV] Support llvm-objdump -M no-aliases and -M numeric
Summary:
Now that llvm-objdump allows target-specific options, we match the
`no-aliases` and `numeric` options for RISC-V, as supported by GNU objdump.

This is done by overriding the variables used for the command-line options, so
that the command-line options are still supported.

This patch updates all tests using `llvm-objdump -riscv-no-aliases` to use
`llvm-objdump -M no-aliases`.

Reviewers: luismarques, asb

Reviewed By: luismarques, asb

Subscribers: pzheng, hiraditya, rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, kito-cheng, shiva0217, jrtc27, MaskRay, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, psnobl, benna, Jim, s.egerton, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66139

llvm-svn: 371534
2019-09-10 16:24:03 +00:00
Alex Bradbury 1ffceaa543 [RISCV] Match GNU tools canonical JALR and add aliases
The canonical GNU form of JALR resembles a load/store instruction rather
than placing the immediate offset as a separate argument, so match this
behaviour. Also add parser-only aliases for the three-operand form, and
add other shorter aliases also emitted by GNU tools.

Differential Revision: https://reviews.llvm.org/D55277
Patch by James Clarke.

llvm-svn: 366179
2019-07-16 04:56:43 +00:00
Alex Bradbury eb3a64a4da [RISCV] Properly evaluate fixup_riscv_pcrel_lo12
This is a update to D43157 to correctly handle fixup_riscv_pcrel_lo12.

Notable changes:

Rebased onto trunk
Handle and test S-type
Test case pcrel-hilo.s is merged into relocations.s

D43157 description:
VK_RISCV_PCREL_LO has to be handled specially. The MCExpr inside is
actually the location of an auipc instruction with a VK_RISCV_PCREL_HI fixup
pointing to the real target.

Differential Revision: https://reviews.llvm.org/D54029
Patch by Chih-Mao Chen and Michael Spencer.

llvm-svn: 349764
2018-12-20 14:52:15 +00:00
Shiva Chen c3d0e89284 [RISCV] Support resolving fixup_riscv_call and add to MCFixupKindInfo table
Resolving fixup_riscv_call by assembler when the linker relaxation diabled
and the function and callsite within the same compile unit.

And also adding static_assert after Infos array declaration
to avoid missing any new fixup in MCFixupKindInfo in the future.

Differential Revision: https://reviews.llvm.org/D47126

llvm-svn: 333487
2018-05-30 01:16:36 +00:00
Alex Bradbury 59136ffab1 [RISCV] Enable emission of alias instructions by default
This patch switches the default for -riscv-no-aliases to false
and updates all affected MC and CodeGen tests. As recommended in
D41071, MC tests use the canonical instructions and the CodeGen
tests use the aliases.

Additionally, for the f and d instructions with rounding mode,
the tests for the aliased versions are moved and tightened such
that they can actually detect if alias emission is enabled.
(see D40902 for context)

Differential Revision: https://reviews.llvm.org/D41225

Patch by Mario Werner.

llvm-svn: 320797
2017-12-15 09:47:01 +00:00
Alex Bradbury 9d3f12501a [RISCV] Add common fixups and relocations
%lo(), %hi(), and %pcrel_hi() are supported and test cases have been added to 
ensure the appropriate fixups and relocations are generated. I've added an 
instruction format field which is used in RISCVMCCodeEmitter to, for 
instance, tell whether it should emit a lo12_i fixup or a lo12_s fixup 
(RISC-V has two 12-bit immediate encodings depending on the instruction 
type).

Differential Revision: https://reviews.llvm.org/D23568

llvm-svn: 314389
2017-09-28 08:26:24 +00:00