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
This patch adds support for UNIMP in both 32- and 16-bit forms. The 32-bit
form can be seen as a variant of the ECALL/EBREAK/etc. family of instructions.
The 16-bit form is just all zeroes, which isn't a valid RISC-V instruction,
but still follows the 16-bit instruction form (i.e. bits 0-1 != 11).
Until recently unimp was undocumented and supported just by binutils, which
printed unimp for either the 16 or 32-bit form. Both forms are now documented
<https://github.com/riscv/riscv-asm-manual/pull/20> and binutils now supports
c.unimp <https://sourceware.org/ml/binutils-cvs/2018-11/msg00179.html>.
Differential Revision: https://reviews.llvm.org/D54316
Patch by Luís Marques.
llvm-svn: 347988
Standardise on check lines:
* CHECK-ASM
* CHECK-OBJ
* CHECK-ASM-AND-OBJ
This allows for the addition of tests involving symbol operands, which will
not result in identical instructions in both assembly and disassembled object
output.
This commit doesn't exploit this reworking to increase test coverage of symbol
operands - that will come in a future patch.
llvm-svn: 341546
Implement c.lui immediate constraint to [1, 31] and [0xfffe0, 0xfffff].
The RISC-V ISA describes the constraint as [1, 63], with that value
being loaded in to bits 17-12 of the destination register and sign extended
from bit 17. Therefore, this 6-bit immediate can represent values in the
ranges [1, 31] and [0xfffe0, 0xfffff].
Differential Revision: https://reviews.llvm.org/D42834
llvm-svn: 325792
llvm-objdump could get C feature by ELF::EF_RISCV_RVC e_flag,
so then we don't have to add -mattr=+c on the command line.
Differential Revision: https://reviews.llvm.org/D42629
llvm-svn: 324058
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
Sam Elliott