diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index 264510285a59f..507cbf20d89e5 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -301,9 +301,6 @@ pub(crate) fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> Option<LLVMFea
             None
         }
         ("x86", "movrs") if get_version().0 < 20 => None,
-        ("x86", "avx10.1") => Some(LLVMFeature::new("avx10.1-512")),
-        ("x86", "avx10.2") if get_version().0 < 20 => None,
-        ("x86", "avx10.2") if get_version().0 >= 20 => Some(LLVMFeature::new("avx10.2-512")),
         (_, s) => Some(LLVMFeature::new(s)),
     }
 }
diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs
index 1a011dfff3f7e..75e09cacb1f1e 100644
--- a/compiler/rustc_feature/src/unstable.rs
+++ b/compiler/rustc_feature/src/unstable.rs
@@ -393,8 +393,6 @@ declare_features! (
     (unstable, async_for_loop, "1.77.0", Some(118898)),
     /// Allows `async` trait bound modifier.
     (unstable, async_trait_bounds, "1.85.0", Some(62290)),
-    /// Allows using Intel AVX10 target features and intrinsics
-    (unstable, avx10_target_feature, "CURRENT_RUSTC_VERSION", Some(138843)),
     /// Allows using C-variadics.
     (unstable, c_variadic, "1.34.0", Some(44930)),
     /// Allows the use of `#[cfg(contract_checks)` to check if contract checks are enabled.
diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index 3912c7dc7d696..7a1fb36324bf9 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -531,7 +531,6 @@ symbols! {
         autodiff,
         automatically_derived,
         avx,
-        avx10_target_feature,
         avx512_target_feature,
         avx512bw,
         avx512f,
diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs
index d04c8f3f2ebf5..f856d3efc1c9f 100644
--- a/compiler/rustc_target/src/target_features.rs
+++ b/compiler/rustc_target/src/target_features.rs
@@ -394,26 +394,6 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     ("amx-tile", Unstable(sym::x86_amx_intrinsics), &[]),
     ("amx-transpose", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
     ("avx", Stable, &["sse4.2"]),
-    (
-        "avx10.1",
-        Unstable(sym::avx10_target_feature),
-        &[
-            "avx512bf16",
-            "avx512bitalg",
-            "avx512bw",
-            "avx512cd",
-            "avx512dq",
-            "avx512f",
-            "avx512fp16",
-            "avx512ifma",
-            "avx512vbmi",
-            "avx512vbmi2",
-            "avx512vl",
-            "avx512vnni",
-            "avx512vpopcntdq",
-        ],
-    ),
-    ("avx10.2", Unstable(sym::avx10_target_feature), &["avx10.1"]),
     ("avx2", Stable, &["avx"]),
     ("avx512bf16", Unstable(sym::avx512_target_feature), &["avx512bw"]),
     ("avx512bitalg", Unstable(sym::avx512_target_feature), &["avx512bw"]),
diff --git a/tests/ui/check-cfg/and-more-diagnostic.rs b/tests/ui/check-cfg/and-more-diagnostic.rs
index 5422829c5b313..977f55e8a6d10 100644
--- a/tests/ui/check-cfg/and-more-diagnostic.rs
+++ b/tests/ui/check-cfg/and-more-diagnostic.rs
@@ -5,7 +5,7 @@
 //@ no-auto-check-cfg
 //@ compile-flags: --check-cfg=cfg()
 //@ normalize-stderr: "and \d+ more" -> "and X more"
-//@ normalize-stderr: "`[a-zA-Z0-9_\.-]+`" -> "`xxx`"
+//@ normalize-stderr: "`[a-zA-Z0-9_-]+`" -> "`xxx`"
 
 fn main() {
     cfg!(target_feature = "zebra");
diff --git a/tests/ui/check-cfg/target_feature.stderr b/tests/ui/check-cfg/target_feature.stderr
index 3d7323298bab6..712ce941c54ce 100644
--- a/tests/ui/check-cfg/target_feature.stderr
+++ b/tests/ui/check-cfg/target_feature.stderr
@@ -29,8 +29,6 @@ LL |     cfg!(target_feature = "_UNEXPECTED_VALUE");
 `amx-transpose`
 `atomics`
 `avx`
-`avx10.1`
-`avx10.2`
 `avx2`
 `avx512bf16`
 `avx512bitalg`
diff --git a/tests/ui/feature-gates/feature-gate-avx10_target_feature.rs b/tests/ui/feature-gates/feature-gate-avx10_target_feature.rs
deleted file mode 100644
index 8557e67d1f416..0000000000000
--- a/tests/ui/feature-gates/feature-gate-avx10_target_feature.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-//@ only-x86_64
-#[target_feature(enable = "avx10.1")]
-//~^ ERROR: currently unstable
-unsafe fn foo() {}
-
-fn main() {}
diff --git a/tests/ui/feature-gates/feature-gate-avx10_target_feature.stderr b/tests/ui/feature-gates/feature-gate-avx10_target_feature.stderr
deleted file mode 100644
index e45ea3524ca74..0000000000000
--- a/tests/ui/feature-gates/feature-gate-avx10_target_feature.stderr
+++ /dev/null
@@ -1,13 +0,0 @@
-error[E0658]: the target feature `avx10.1` is currently unstable
-  --> $DIR/feature-gate-avx10_target_feature.rs:2:18
-   |
-LL | #[target_feature(enable = "avx10.1")]
-   |                  ^^^^^^^^^^^^^^^^^^
-   |
-   = note: see issue #138843 <https://github.com/rust-lang/rust/issues/138843> for more information
-   = help: add `#![feature(avx10_target_feature)]` to the crate attributes to enable
-   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
-
-error: aborting due to 1 previous error
-
-For more information about this error, try `rustc --explain E0658`.