Unconditionally enable f16 & f128 to see what passes with llvm21

Author: tgross35

compiler-builtins/configure.rs

@@ -55,8 +55,10 @@ impl Target {
                 .collect(),
             // Note that these are unstable options, so only show up with the nightly compiler or
             // with `RUSTC_BOOTSTRAP=1` (which is required to use the types anyway).
-            reliable_f128: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F128").is_some(),
-            reliable_f16: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F16").is_some(),
+            // reliable_f128: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F128").is_some(),
+            // reliable_f16: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F16").is_some(),
+            reliable_f16: true,
+            reliable_f128: true,
         }
     }
 

libm/configure.rs

@@ -48,8 +48,10 @@ impl Config {
             target_features,
             // Note that these are unstable options, so only show up with the nightly compiler or
             // with `RUSTC_BOOTSTRAP=1` (which is required to use the types anyway).
-            reliable_f128: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F128").is_some(),
-            reliable_f16: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F16").is_some(),
+            // reliable_f128: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F128").is_some(),
+            // reliable_f16: env::var_os("CARGO_CFG_TARGET_HAS_RELIABLE_F16").is_some(),
+            reliable_f16: true,
+            reliable_f128: true,
         }
     }
 }