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-rw-r--r--compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs14
-rw-r--r--compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs2
-rw-r--r--compiler/rustc_codegen_llvm/src/llvm_util.rs8
3 files changed, 16 insertions, 8 deletions
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
index e9574108696..a5c80895741 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
@@ -1,7 +1,7 @@
 use std::borrow::Cow;
 
 use libc::c_uint;
-use rustc_abi::{Align, Endian, Size, TagEncoding, VariantIdx, Variants};
+use rustc_abi::{Align, Endian, FieldIdx, Size, TagEncoding, VariantIdx, Variants};
 use rustc_codegen_ssa::debuginfo::type_names::compute_debuginfo_type_name;
 use rustc_codegen_ssa::debuginfo::{tag_base_type, wants_c_like_enum_debuginfo};
 use rustc_codegen_ssa::traits::{ConstCodegenMethods, MiscCodegenMethods};
@@ -401,7 +401,7 @@ fn build_union_fields_for_enum<'ll, 'tcx>(
     enum_type_and_layout: TyAndLayout<'tcx>,
     enum_type_di_node: &'ll DIType,
     variant_indices: impl Iterator<Item = VariantIdx> + Clone,
-    tag_field: usize,
+    tag_field: FieldIdx,
     untagged_variant_index: Option<VariantIdx>,
 ) -> SmallVec<&'ll DIType> {
     let tag_base_type = tag_base_type(cx.tcx, enum_type_and_layout);
@@ -805,7 +805,7 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
     variant_field_infos: &[VariantFieldInfo<'ll>],
     discr_type_di_node: &'ll DIType,
     tag_base_type: Ty<'tcx>,
-    tag_field: usize,
+    tag_field: FieldIdx,
     untagged_variant_index: Option<VariantIdx>,
     di_flags: DIFlags,
 ) -> SmallVec<&'ll DIType> {
@@ -858,7 +858,7 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
     }));
 
     assert_eq!(
-        cx.size_and_align_of(enum_type_and_layout.field(cx, tag_field).ty),
+        cx.size_and_align_of(enum_type_and_layout.field(cx, tag_field.as_usize()).ty),
         cx.size_and_align_of(self::tag_base_type(cx.tcx, enum_type_and_layout))
     );
 
@@ -875,7 +875,7 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
             Endian::Big => (8, 0),
         };
 
-        let tag_field_offset = enum_type_and_layout.fields.offset(tag_field).bytes();
+        let tag_field_offset = enum_type_and_layout.fields.offset(tag_field.as_usize()).bytes();
         let lo_offset = Size::from_bytes(tag_field_offset + lo_offset);
         let hi_offset = Size::from_bytes(tag_field_offset + hi_offset);
 
@@ -905,8 +905,8 @@ fn build_union_fields_for_direct_tag_enum_or_coroutine<'ll, 'tcx>(
             cx,
             enum_type_di_node,
             TAG_FIELD_NAME,
-            enum_type_and_layout.field(cx, tag_field),
-            enum_type_and_layout.fields.offset(tag_field),
+            enum_type_and_layout.field(cx, tag_field.as_usize()),
+            enum_type_and_layout.fields.offset(tag_field.as_usize()),
             di_flags,
             tag_base_type_di_node,
             None,
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
index 20a841f2287..62d38d463ab 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
@@ -373,7 +373,7 @@ fn build_discr_member_di_node<'ll, 'tcx>(
                 file,
                 UNKNOWN_LINE_NUMBER,
                 layout,
-                enum_or_coroutine_type_and_layout.fields.offset(tag_field),
+                enum_or_coroutine_type_and_layout.fields.offset(tag_field.as_usize()),
                 DIFlags::FlagArtificial,
                 ty,
             ))
diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index 8f57f0983ab..9718c95f38a 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -282,6 +282,14 @@ pub(crate) fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> Option<LLVMFea
         }
         // Filter out features that are not supported by the current LLVM version
         ("riscv32" | "riscv64", "zacas") if get_version().0 < 20 => None,
+        (
+            "s390x",
+            "message-security-assist-extension12"
+            | "concurrent-functions"
+            | "miscellaneous-extensions-4"
+            | "vector-enhancements-3"
+            | "vector-packed-decimal-enhancement-3",
+        ) if get_version().0 < 20 => None,
         // Enable the evex512 target feature if an avx512 target feature is enabled.
         ("x86", s) if s.starts_with("avx512") => Some(LLVMFeature::with_dependencies(
             s,