make tidy-alphabetical use a natural sort

compiler/rustc_target/src/target_features.rs

@@ -212,9 +212,6 @@ static AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("flagm2", Unstable(sym::aarch64_unstable_target_feature), &[]),
     // We forbid directly toggling just `fp-armv8`; it must be toggled with `neon`.
     ("fp-armv8", Stability::Forbidden { reason: "Rust ties `fp-armv8` to `neon`" }, &[]),
-    // FEAT_FP16
-    // Rust ties FP and Neon: https://github.com/rust-lang/rust/pull/91608
-    ("fp16", Stable, &["neon"]),
     // FEAT_FP8
     ("fp8", Unstable(sym::aarch64_unstable_target_feature), &["faminmax", "lut", "bf16"]),
     // FEAT_FP8DOT2
@@ -223,6 +220,9 @@ static AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("fp8dot4", Unstable(sym::aarch64_unstable_target_feature), &["fp8fma"]),
     // FEAT_FP8FMA
     ("fp8fma", Unstable(sym::aarch64_unstable_target_feature), &["fp8"]),
+    // FEAT_FP16
+    // Rust ties FP and Neon: https://github.com/rust-lang/rust/pull/91608
+    ("fp16", Stable, &["neon"]),
     // FEAT_FRINTTS
     ("frintts", Stable, &[]),
     // FEAT_HBC
@@ -236,10 +236,10 @@ static AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("lor", Stable, &[]),
     // FEAT_LSE
     ("lse", Stable, &[]),
-    // FEAT_LSE128
-    ("lse128", Unstable(sym::aarch64_unstable_target_feature), &["lse"]),
     // FEAT_LSE2
     ("lse2", Unstable(sym::aarch64_unstable_target_feature), &[]),
+    // FEAT_LSE128
+    ("lse128", Unstable(sym::aarch64_unstable_target_feature), &["lse"]),
     // FEAT_LUT
     ("lut", Unstable(sym::aarch64_unstable_target_feature), &[]),
     // FEAT_MOPS
@@ -283,14 +283,14 @@ static AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("sme", Unstable(sym::aarch64_unstable_target_feature), &["bf16"]),
     // FEAT_SME_B16B16
     ("sme-b16b16", Unstable(sym::aarch64_unstable_target_feature), &["bf16", "sme2", "sve-b16b16"]),
-    // FEAT_SME_F16F16
-    ("sme-f16f16", Unstable(sym::aarch64_unstable_target_feature), &["sme2"]),
-    // FEAT_SME_F64F64
-    ("sme-f64f64", Unstable(sym::aarch64_unstable_target_feature), &["sme"]),
     // FEAT_SME_F8F16
     ("sme-f8f16", Unstable(sym::aarch64_unstable_target_feature), &["sme-f8f32"]),
     // FEAT_SME_F8F32
     ("sme-f8f32", Unstable(sym::aarch64_unstable_target_feature), &["sme2", "fp8"]),
+    // FEAT_SME_F16F16
+    ("sme-f16f16", Unstable(sym::aarch64_unstable_target_feature), &["sme2"]),
+    // FEAT_SME_F64F64
+    ("sme-f64f64", Unstable(sym::aarch64_unstable_target_feature), &["sme"]),
     // FEAT_SME_FA64
     ("sme-fa64", Unstable(sym::aarch64_unstable_target_feature), &["sme", "sve2"]),
     // FEAT_SME_I16I64
@@ -376,8 +376,8 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("amx-avx512", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("amx-bf16", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("amx-complex", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
-    ("amx-fp16", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("amx-fp8", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
+    ("amx-fp16", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("amx-int8", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("amx-movrs", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("amx-tf32", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
@@ -385,6 +385,7 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("amx-transpose", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("apxf", Unstable(sym::apx_target_feature), &[]),
     ("avx", Stable, &["sse4.2"]),
+    ("avx2", Stable, &["avx"]),
     (
         "avx10.1",
         Unstable(sym::avx10_target_feature),
@@ -405,7 +406,6 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
         ],
     ),
     ("avx10.2", Unstable(sym::avx10_target_feature), &["avx10.1"]),
-    ("avx2", Stable, &["avx"]),
     ("avx512bf16", Stable, &["avx512bw"]),
     ("avx512bitalg", Stable, &["avx512bw"]),
     ("avx512bw", Stable, &["avx512f"]),
@@ -423,8 +423,8 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("avxifma", Stable, &["avx2"]),
     ("avxneconvert", Stable, &["avx2"]),
     ("avxvnni", Stable, &["avx2"]),
-    ("avxvnniint16", Stable, &["avx2"]),
     ("avxvnniint8", Stable, &["avx2"]),
+    ("avxvnniint16", Stable, &["avx2"]),
     ("bmi1", Stable, &[]),
     ("bmi2", Stable, &[]),
     ("cmpxchg16b", Stable, &[]),
@@ -498,12 +498,12 @@ static POWERPC_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("altivec", Unstable(sym::powerpc_target_feature), &[]),
     ("msync", Unstable(sym::powerpc_target_feature), &[]),
     ("partword-atomics", Unstable(sym::powerpc_target_feature), &[]),
-    ("power10-vector", Unstable(sym::powerpc_target_feature), &["power9-vector"]),
     ("power8-altivec", Unstable(sym::powerpc_target_feature), &["altivec"]),
     ("power8-crypto", Unstable(sym::powerpc_target_feature), &["power8-altivec"]),
     ("power8-vector", Unstable(sym::powerpc_target_feature), &["vsx", "power8-altivec"]),
     ("power9-altivec", Unstable(sym::powerpc_target_feature), &["power8-altivec"]),
     ("power9-vector", Unstable(sym::powerpc_target_feature), &["power8-vector", "power9-altivec"]),
+    ("power10-vector", Unstable(sym::powerpc_target_feature), &["power9-vector"]),
     ("quadword-atomics", Unstable(sym::powerpc_target_feature), &[]),
     ("vsx", Unstable(sym::powerpc_target_feature), &["altivec"]),
     // tidy-alphabetical-end
@@ -535,8 +535,8 @@ static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("unaligned-scalar-mem", Unstable(sym::riscv_target_feature), &[]),
     ("unaligned-vector-mem", Unstable(sym::riscv_target_feature), &[]),
     ("v", Unstable(sym::riscv_target_feature), &["zvl128b", "zve64d"]),
-    ("za128rs", Unstable(sym::riscv_target_feature), &[]),
     ("za64rs", Unstable(sym::riscv_target_feature), &["za128rs"]), // Za64rs ⊃ Za128rs
+    ("za128rs", Unstable(sym::riscv_target_feature), &[]),
     ("zaamo", Unstable(sym::riscv_target_feature), &[]),
     ("zabha", Unstable(sym::riscv_target_feature), &["zaamo"]),
     ("zacas", Unstable(sym::riscv_target_feature), &["zaamo"]),
@@ -613,18 +613,18 @@ static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("zvksg", Unstable(sym::riscv_target_feature), &["zvks", "zvkg"]),
     ("zvksh", Unstable(sym::riscv_target_feature), &["zve32x"]),
     ("zvkt", Unstable(sym::riscv_target_feature), &[]),
-    ("zvl1024b", Unstable(sym::riscv_target_feature), &["zvl512b"]),
-    ("zvl128b", Unstable(sym::riscv_target_feature), &["zvl64b"]),
-    ("zvl16384b", Unstable(sym::riscv_target_feature), &["zvl8192b"]),
-    ("zvl2048b", Unstable(sym::riscv_target_feature), &["zvl1024b"]),
-    ("zvl256b", Unstable(sym::riscv_target_feature), &["zvl128b"]),
-    ("zvl32768b", Unstable(sym::riscv_target_feature), &["zvl16384b"]),
     ("zvl32b", Unstable(sym::riscv_target_feature), &[]),
-    ("zvl4096b", Unstable(sym::riscv_target_feature), &["zvl2048b"]),
-    ("zvl512b", Unstable(sym::riscv_target_feature), &["zvl256b"]),
     ("zvl64b", Unstable(sym::riscv_target_feature), &["zvl32b"]),
-    ("zvl65536b", Unstable(sym::riscv_target_feature), &["zvl32768b"]),
+    ("zvl128b", Unstable(sym::riscv_target_feature), &["zvl64b"]),
+    ("zvl256b", Unstable(sym::riscv_target_feature), &["zvl128b"]),
+    ("zvl512b", Unstable(sym::riscv_target_feature), &["zvl256b"]),
+    ("zvl1024b", Unstable(sym::riscv_target_feature), &["zvl512b"]),
+    ("zvl2048b", Unstable(sym::riscv_target_feature), &["zvl1024b"]),
+    ("zvl4096b", Unstable(sym::riscv_target_feature), &["zvl2048b"]),
     ("zvl8192b", Unstable(sym::riscv_target_feature), &["zvl4096b"]),
+    ("zvl16384b", Unstable(sym::riscv_target_feature), &["zvl8192b"]),
+    ("zvl32768b", Unstable(sym::riscv_target_feature), &["zvl16384b"]),
+    ("zvl65536b", Unstable(sym::riscv_target_feature), &["zvl32768b"]),
     // tidy-alphabetical-end
 ];
 
@@ -651,13 +651,13 @@ const BPF_FEATURES: &[(&str, Stability, ImpliedFeatures)] =
 
 static CSKY_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
-    ("10e60", Unstable(sym::csky_target_feature), &["7e10"]),
     ("2e3", Unstable(sym::csky_target_feature), &["e2"]),
     ("3e3r1", Unstable(sym::csky_target_feature), &[]),
     ("3e3r2", Unstable(sym::csky_target_feature), &["3e3r1", "doloop"]),
     ("3e3r3", Unstable(sym::csky_target_feature), &["doloop"]),
     ("3e7", Unstable(sym::csky_target_feature), &["2e3"]),
     ("7e10", Unstable(sym::csky_target_feature), &["3e7"]),
+    ("10e60", Unstable(sym::csky_target_feature), &["7e10"]),
     ("cache", Unstable(sym::csky_target_feature), &[]),
     ("doloop", Unstable(sym::csky_target_feature), &[]),
     ("dsp1e2", Unstable(sym::csky_target_feature), &[]),
@@ -726,12 +726,12 @@ const IBMZ_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("guarded-storage", Unstable(sym::s390x_target_feature), &[]),
     ("high-word", Unstable(sym::s390x_target_feature), &[]),
     // LLVM does not define message-security-assist-extension versions 1, 2, 6, 10 and 11.
-    ("message-security-assist-extension12", Unstable(sym::s390x_target_feature), &[]),
     ("message-security-assist-extension3", Unstable(sym::s390x_target_feature), &[]),
     ("message-security-assist-extension4", Unstable(sym::s390x_target_feature), &[]),
     ("message-security-assist-extension5", Unstable(sym::s390x_target_feature), &[]),
     ("message-security-assist-extension8", Unstable(sym::s390x_target_feature), &["message-security-assist-extension3"]),
     ("message-security-assist-extension9", Unstable(sym::s390x_target_feature), &["message-security-assist-extension3", "message-security-assist-extension4"]),
+    ("message-security-assist-extension12", Unstable(sym::s390x_target_feature), &[]),
     ("miscellaneous-extensions-2", Unstable(sym::s390x_target_feature), &[]),
     ("miscellaneous-extensions-3", Unstable(sym::s390x_target_feature), &[]),
     ("miscellaneous-extensions-4", Unstable(sym::s390x_target_feature), &[]),