public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc r14-8274] RISC-V: Add the Zihpm and Zicntr extensions
@ 2024-01-19 8:05 Kito Cheng
0 siblings, 0 replies; only message in thread
From: Kito Cheng @ 2024-01-19 8:05 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:730a801f950e7817696067906cf40d590688387a
commit r14-8274-g730a801f950e7817696067906cf40d590688387a
Author: Palmer Dabbelt <palmer@rivosinc.com>
Date: Tue Nov 8 19:00:36 2022 -0800
RISC-V: Add the Zihpm and Zicntr extensions
These extensions were recently frozen [1]. As per Andrew's post [2]
we're meant to ignore these in software, this just adds them to the list
of allowed extensions and otherwise ignores them. I added these under
SPEC_CLASS_NONE even though the PDF lists them as 20190614 because it
seems pointless to add another spec class just to accept two extensions
we then ignore.
1: https://groups.google.com/a/groups.riscv.org/g/isa-dev/c/HZGoqP1eyps/m/GTNKRLJoAQAJ
2: https://groups.google.com/a/groups.riscv.org/g/sw-dev/c/QKjQhChrq9Q/m/7gqdkctgAgAJ
gcc/ChangeLog
* common/config/riscv/riscv-common.cc: Add Zihpm and Zicnttr
extensions.
Diff:
---
gcc/common/config/riscv/riscv-common.cc | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc
index 958a6925a6d..4da7f37303b 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -279,6 +279,9 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
{"zicbom",ISA_SPEC_CLASS_NONE, 1, 0},
{"zicbop",ISA_SPEC_CLASS_NONE, 1, 0},
+ {"zicntr", ISA_SPEC_CLASS_NONE, 2, 0},
+ {"zihpm", ISA_SPEC_CLASS_NONE, 2, 0},
+
{"zk", ISA_SPEC_CLASS_NONE, 1, 0},
{"zkn", ISA_SPEC_CLASS_NONE, 1, 0},
{"zks", ISA_SPEC_CLASS_NONE, 1, 0},
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2024-01-19 8:05 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-01-19 8:05 [gcc r14-8274] RISC-V: Add the Zihpm and Zicntr extensions Kito Cheng
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).