x86-64 hardfloat actually requires sse2

1 files changed, 13 insertions, 6 deletions

diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index d4b2260123b..7fe0624e166 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -753,12 +753,19 @@ pub(crate) fn global_llvm_features(
                         });
                     }
                 } else {
-                    if abi_enable_set.contains(feature) {
-                        sess.dcx().emit_warn(ForbiddenCTargetFeature {
-                            feature,
-                            enabled: "disabled",
-                            reason: "this feature is required by the target ABI",
-                        });
+                    // FIXME: we have to request implied features here since
+                    // negative features do not handle implied features above.
+                    #[allow(rustc::potential_query_instability)] // order does not matter
+                    for &required in abi_enable_set.iter() {
+                        let implied =
+                            sess.target.implied_target_features(std::iter::once(required));
+                        if implied.contains(feature) {
+                            sess.dcx().emit_warn(ForbiddenCTargetFeature {
+                                feature,
+                                enabled: "disabled",
+                                reason: "this feature is required by the target ABI",
+                            });
+                        }
                     }
                 }