diff --git a/compiler/rustc_codegen_cranelift/src/cast.rs b/compiler/rustc_codegen_cranelift/src/cast.rs
index f124739d1e154..abf4326f91888 100644
--- a/compiler/rustc_codegen_cranelift/src/cast.rs
+++ b/compiler/rustc_codegen_cranelift/src/cast.rs
@@ -148,10 +148,6 @@ pub(crate) fn clif_int_or_float_cast(
             fx.bcx.ins().fcvt_to_uint_sat(to_ty, from)
         };
 
-        if let Some(false) = fx.tcx.sess.opts.unstable_opts.saturating_float_casts {
-            return val;
-        }
-
         let is_not_nan = fx.bcx.ins().fcmp(FloatCC::Equal, from, from);
         let zero = type_zero_value(&mut fx.bcx, to_ty);
         fx.bcx.ins().select(is_not_nan, val, zero)
diff --git a/compiler/rustc_codegen_cranelift/src/codegen_f16_f128.rs b/compiler/rustc_codegen_cranelift/src/codegen_f16_f128.rs
index 3dbd59c2fca4d..09762f1a451b6 100644
--- a/compiler/rustc_codegen_cranelift/src/codegen_f16_f128.rs
+++ b/compiler/rustc_codegen_cranelift/src/codegen_f16_f128.rs
@@ -265,10 +265,6 @@ pub(crate) fn codegen_cast(
             fx.bcx.ins().ireduce(to_ty, val)
         };
 
-        if let Some(false) = fx.tcx.sess.opts.unstable_opts.saturating_float_casts {
-            return val;
-        }
-
         let is_not_nan = fcmp(fx, FloatCC::Equal, from, from);
         let zero = type_zero_value(&mut fx.bcx, to_ty);
         fx.bcx.ins().select(is_not_nan, val, zero)
diff --git a/compiler/rustc_codegen_ssa/src/traits/builder.rs b/compiler/rustc_codegen_ssa/src/traits/builder.rs
index 56dc13b832032..cb0209a0ae369 100644
--- a/compiler/rustc_codegen_ssa/src/traits/builder.rs
+++ b/compiler/rustc_codegen_ssa/src/traits/builder.rs
@@ -404,10 +404,6 @@ pub trait BuilderMethods<'a, 'tcx>:
         );
         assert_eq!(self.cx().type_kind(int_ty), TypeKind::Integer);
 
-        if let Some(false) = self.cx().sess().opts.unstable_opts.saturating_float_casts {
-            return if signed { self.fptosi(x, dest_ty) } else { self.fptoui(x, dest_ty) };
-        }
-
         if signed { self.fptosi_sat(x, dest_ty) } else { self.fptoui_sat(x, dest_ty) }
     }
 
diff --git a/compiler/rustc_interface/src/tests.rs b/compiler/rustc_interface/src/tests.rs
index d3c479f2a22f5..41ce4fb759dac 100644
--- a/compiler/rustc_interface/src/tests.rs
+++ b/compiler/rustc_interface/src/tests.rs
@@ -890,7 +890,6 @@ fn test_unstable_options_tracking_hash() {
     tracked!(sanitizer_kcfi_arity, Some(true));
     tracked!(sanitizer_memory_track_origins, 2);
     tracked!(sanitizer_recover, SanitizerSet::ADDRESS);
-    tracked!(saturating_float_casts, Some(true));
     tracked!(share_generics, Some(true));
     tracked!(simulate_remapped_rust_src_base, Some(PathBuf::from("/rustc/abc")));
     tracked!(small_data_threshold, Some(16));
diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs
index 90459090ced87..d1cc7122236b7 100644
--- a/compiler/rustc_session/src/options.rs
+++ b/compiler/rustc_session/src/options.rs
@@ -2827,9 +2827,6 @@ written to standard error output)"),
         "enable origins tracking in MemorySanitizer"),
     sanitizer_recover: SanitizerSet = (SanitizerSet::empty(), parse_sanitizers, [TRACKED],
         "enable recovery for selected sanitizers"),
-    saturating_float_casts: Option<bool> = (None, parse_opt_bool, [TRACKED],
-        "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
-        the max/min integer respectively, and NaN is mapped to 0 (default: yes)"),
     self_profile: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
         parse_switch_with_opt_path, [UNTRACKED],
         "run the self profiler and output the raw event data"),