diff options
| author | Philipp Tomsich <philipp.tomsich@vrull.eu> | 2021-09-11 16:00:13 +0200 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2021-10-07 08:41:33 +1000 |
| commit | a1095bdcb050f0a17afb3fcb8a36543fb58f4ea9 (patch) | |
| tree | 5d097c71a286945da118e9c7850686a2ce78b617 /target/riscv/helper.h | |
| parent | 7e68e6c79b9de5c923e478ea6794a5143610b765 (diff) | |
target/riscv: Add rev8 instruction, removing grev/grevi
The 1.0.0 version of Zbb does not contain grev/grevi. Instead, a
rev8 instruction (equivalent to the rev8 pseudo-instruction built on
grevi from pre-0.93 draft-B) is available.
This commit adds the new rev8 instruction and removes grev/grevi.
Note that there is no W-form of this instruction (both a
sign-extending and zero-extending 32-bit version can easily be
synthesized by following rev8 with either a srai or srli instruction
on RV64) and that the opcode encodings for rev8 in RV32 and RV64 are
different.
Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210911140016.834071-14-philipp.tomsich@vrull.eu
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target/riscv/helper.h')
| -rw-r--r-- | target/riscv/helper.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/target/riscv/helper.h b/target/riscv/helper.h index a9bda2c8ac..c7a5376227 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -59,8 +59,6 @@ DEF_HELPER_FLAGS_2(fcvt_d_lu, TCG_CALL_NO_RWG, i64, env, tl) DEF_HELPER_FLAGS_1(fclass_d, TCG_CALL_NO_RWG_SE, tl, i64) /* Bitmanip */ -DEF_HELPER_FLAGS_2(grev, TCG_CALL_NO_RWG_SE, tl, tl, tl) -DEF_HELPER_FLAGS_2(grevw, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_FLAGS_2(clmul, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_FLAGS_2(clmulr, TCG_CALL_NO_RWG_SE, tl, tl, tl) |