Add new Tier-3 target: riscv64a23-unknown-linux-gnu

Author: ZhongyaoChen

compiler/rustc_target/src/spec/mod.rs

@@ -2137,6 +2137,7 @@ supported_targets! {
     ("riscv64gc-unknown-none-elf", riscv64gc_unknown_none_elf),
     ("riscv64gc-unknown-linux-gnu", riscv64gc_unknown_linux_gnu),
     ("riscv64gc-unknown-linux-musl", riscv64gc_unknown_linux_musl),
+    ("riscv64a23-unknown-linux-gnu", riscv64a23_unknown_linux_gnu),
 
     ("sparc-unknown-none-elf", sparc_unknown_none_elf),
 

compiler/rustc_target/src/spec/targets/riscv64a23_unknown_linux_gnu.rs

@@ -0,0 +1,27 @@
+use std::borrow::Cow;
+
+use crate::spec::{CodeModel, SplitDebuginfo, Target, TargetMetadata, TargetOptions, base};
+
+pub(crate) fn target() -> Target {
+    Target {
+        llvm_target: "riscv64-unknown-linux-gnu".into(),
+        metadata: TargetMetadata {
+            description: Some("RISC-V Linux (kernel 4.20, glibc 2.29)".into()),
+            tier: Some(3),
+            host_tools: Some(true),
+            std: Some(true),
+        },
+        pointer_width: 64,
+        data_layout: "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128".into(),
+        arch: "riscv64".into(),
+        options: TargetOptions {
+            code_model: Some(CodeModel::Medium),
+            cpu: "generic-rv64".into(),
+            features: "+rva23u64,+rva23s64".into(),
+            llvm_abiname: "lp64d".into(),
+            max_atomic_width: Some(64),
+            supported_split_debuginfo: Cow::Borrowed(&[SplitDebuginfo::Off]),
+            ..base::linux_gnu::opts()
+        },
+    }
+}

compiler/rustc_target/src/target_features.rs

@@ -597,6 +597,119 @@ static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ),
     ("m", Stable, &[]),
     ("relax", Unstable(sym::riscv_target_feature), &[]),
+    (
+        "rva23s64",
+        Unstable(sym::riscv_target_feature),
+        &[
+            "m",
+            "a",
+            "f",
+            "d",
+            "c",
+            "b",
+            "v",
+            "zicsr",
+            "zicntr",
+            "zihpm",
+            "ziccif",
+            "ziccrse",
+            "ziccamoa",
+            "zicclsm",
+            "zic64b",
+            "za64rs",
+            "zihintpause",
+            "zba",
+            "zbb",
+            "zbs",
+            "zicbom",
+            "zicbop",
+            "zicboz",
+            "zfhmin",
+            "zkt",
+            "zvfhmin",
+            "zvbb",
+            "zvkt",
+            "zihintntl",
+            "zicond",
+            "zimop",
+            "zcmop",
+            "zcb",
+            "zfa",
+            "zawrs",
+            "svbare",
+            "svade",
+            "ssccptr",
+            "sstvecd",
+            "sstvala",
+            "sscounterenw",
+            "svpbmt",
+            "svinval",
+            "svnapot",
+            "sstc",
+            "sscofpmf",
+            "ssnpm",
+            "ssu64xl",
+            "sha",
+            "supm",
+        ],
+    ),
+    (
+        "rva23u64",
+        Unstable(sym::riscv_target_feature),
+        &[
+            "m",
+            "a",
+            "f",
+            "d",
+            "c",
+            "b",
+            "v",
+            "zicsr",
+            "zicntr",
+            "zihpm",
+            "ziccif",
+            "ziccrse",
+            "ziccamoa",
+            "zicclsm",
+            "zic64b",
+            "za64rs",
+            "zihintpause",
+            "zba",
+            "zbb",
+            "zbs",
+            "zicbom",
+            "zicbop",
+            "zicboz",
+            "zfhmin",
+            "zkt",
+            "zvfhmin",
+            "zvbb",
+            "zvkt",
+            "zihintntl",
+            "zicond",
+            "zimop",
+            "zcmop",
+            "zcb",
+            "zfa",
+            "zawrs",
+            "supm",
+        ],
+    ),
+    ("sha", Unstable(sym::riscv_target_feature), &[]),
+    ("ssccptr", Unstable(sym::riscv_target_feature), &[]),
+    ("sscofpmf", Unstable(sym::riscv_target_feature), &[]),
+    ("sscounterenw", Unstable(sym::riscv_target_feature), &[]),
+    ("ssnpm", Unstable(sym::riscv_target_feature), &[]),
+    ("sstc", Unstable(sym::riscv_target_feature), &[]),
+    ("sstvala", Unstable(sym::riscv_target_feature), &[]),
+    ("sstvecd", Unstable(sym::riscv_target_feature), &[]),
+    ("ssu64xl", Unstable(sym::riscv_target_feature), &[]),
+    ("supm", Unstable(sym::riscv_target_feature), &[]),
+    ("svade", Unstable(sym::riscv_target_feature), &[]),
+    ("svbare", Unstable(sym::riscv_target_feature), &[]),
+    ("svinval", Unstable(sym::riscv_target_feature), &[]),
+    ("svnapot", Unstable(sym::riscv_target_feature), &[]),
+    ("svpbmt", Unstable(sym::riscv_target_feature), &[]),
     ("unaligned-scalar-mem", Unstable(sym::riscv_target_feature), &[]),
     ("unaligned-vector-mem", Unstable(sym::riscv_target_feature), &[]),
     ("v", Unstable(sym::riscv_target_feature), &["zvl128b", "zve64d"]),

src/bootstrap/src/core/sanity.rs

@@ -34,6 +34,7 @@ pub struct Finder {
 // Targets can be removed from this list once they are present in the stage0 compiler (usually by updating the beta compiler of the bootstrap).
 const STAGE0_MISSING_TARGETS: &[&str] = &[
     "armv7a-vex-v5",
+    "riscv64a23-unknown-linux-gnu",
     // just a dummy comment so the list doesn't get onelined
 ];
 

tests/assembly-llvm/targets/targets-elf.rs

@@ -475,6 +475,9 @@
 //@ revisions: riscv64gc_unknown_linux_gnu
 //@ [riscv64gc_unknown_linux_gnu] compile-flags: --target riscv64gc-unknown-linux-gnu
 //@ [riscv64gc_unknown_linux_gnu] needs-llvm-components: riscv
+//@ revisions: riscv64a23_unknown_linux_gnu
+//@ [riscv64a23_unknown_linux_gnu] compile-flags: --target riscv64a23-unknown-linux-gnu
+//@ [riscv64a23_unknown_linux_gnu] needs-llvm-components: riscv
 //@ revisions: riscv64gc_unknown_linux_musl
 //@ [riscv64gc_unknown_linux_musl] compile-flags: --target riscv64gc-unknown-linux-musl
 //@ [riscv64gc_unknown_linux_musl] needs-llvm-components: riscv