From 730a801f950e7817696067906cf40d590688387a Mon Sep 17 00:00:00 2001 From: Palmer Dabbelt Date: Tue, 8 Nov 2022 19:00:36 -0800 Subject: [PATCH] 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. --- 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},