Add Some new target features for x86

Author: sayantn

Diff for: compiler/rustc_target/src/target_features.rs

@@ -192,6 +192,11 @@ const X86_ALLOWED_FEATURES: &[(&str, Stability)] = &[
     // tidy-alphabetical-start
     ("adx", Stable),
     ("aes", Stable),
+    ("amx-bf16", Stable),
+    ("amx-complex", Stable),
+    ("amx-fp16", Stable),
+    ("amx-int8", Stable),
+    ("amx-tile", Stable),
     ("avx", Stable),
     ("avx2", Stable),
     ("avx512bf16", Unstable(sym::avx512_target_feature)),
@@ -208,6 +213,11 @@ const X86_ALLOWED_FEATURES: &[(&str, Stability)] = &[
     ("avx512vnni", Unstable(sym::avx512_target_feature)),
     ("avx512vp2intersect", Unstable(sym::avx512_target_feature)),
     ("avx512vpopcntdq", Unstable(sym::avx512_target_feature)),
+    ("avxifma", Unstable(sym::avx512_target_feature)),
+    ("avxneconvert", Unstable(sym::avx512_target_feature)),
+    ("avxvnni", Unstable(sym::avx512_target_feature)),
+    ("avxvnniint16", Unstable(sym::avx512_target_feature)),
+    ("avxvnniint8", Unstable(sym::avx512_target_feature)),
     ("bmi1", Stable),
     ("bmi2", Stable),
     ("cmpxchg16b", Stable),
@@ -226,6 +236,9 @@ const X86_ALLOWED_FEATURES: &[(&str, Stability)] = &[
     ("rdseed", Stable),
     ("rtm", Unstable(sym::rtm_target_feature)),
     ("sha", Stable),
+    ("sha512", Stable),
+    ("sm3", Stable),
+    ("sm4", Stable),
     ("sse", Stable),
     ("sse2", Stable),
     ("sse3", Stable),