LLVM 18 x86 data layout update

With https://reviews.llvm.org/D86310 LLVM now has i128 aligned to 16-bytes on x86 based platforms. This will be in LLVM-18. This patch updates all our spec targets to be 16-byte aligned, and ignores the alignment change when checking what the LLVM's default spec is on the relevant targets for older LLVMs. * This is a potentially breaking change, as u128 and i128 will have their alignment increase on some platforms. * This results in Rust overaligning things relative to LLVM on older LLVMs. See #54341
rust-lang · Oct 13, 2023 · 046503e · 046503e
1 parent 3c23df4
commit 046503e
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Showing 47 changed files with 108 additions and 84 deletions.
diff --git a/compiler/rustc_ast/src/ast.rs b/compiler/rustc_ast/src/ast.rs
@@ -3185,9 +3185,13 @@ mod size_asserts {
     static_assert_size!(Impl, 136);
     static_assert_size!(Item, 136);
     static_assert_size!(ItemKind, 64);
-    static_assert_size!(LitKind, 24);
+    // This can be removed after i128:128 is in the bootstrap compiler's target.
+    #[cfg(not(bootstrap))]
+    static_assert_size!(LitKind, 32);
     static_assert_size!(Local, 72);
-    static_assert_size!(MetaItemLit, 40);
+    // This can be removed after i128:128 is in the bootstrap compiler's target.
+    #[cfg(not(bootstrap))]
+    static_assert_size!(MetaItemLit, 48);
     static_assert_size!(Param, 40);
     static_assert_size!(Pat, 72);
     static_assert_size!(Path, 24);

diff --git a/compiler/rustc_codegen_llvm/src/context.rs b/compiler/rustc_codegen_llvm/src/context.rs
@@ -186,12 +186,26 @@ pub unsafe fn create_module<'ll>(
         let cfg_llvm_root = option_env!("CFG_LLVM_ROOT").unwrap_or("");
         let custom_llvm_used = !cfg_llvm_root.trim().is_empty();
 
-        if !custom_llvm_used && target_data_layout != llvm_data_layout {
+        let mut checked_target_data_layout = target_data_layout.clone();
+        if llvm_version < (18, 0, 0) {
+            if sess.target.arch == "x86" || sess.target.arch == "x86_64" {
+                // LLVM 18 adjusts i128 to be 128-bit aligned on x86 variants.
+                // Earlier LLVMs leave this as default alignment, so remove it.
+                // We only modify the checked data layout because LLVM will generate incorrect code without it.
+                // This matches the behavior of Clang on earlier LLVMs, which reduces the likelihood of problems arising from it.
+                // This removal acts as our acknowledgement of this deviation between the default LLVM target spec and the one we are using.
+                //
+                // See https://reviews.llvm.org/D86310
+                checked_target_data_layout = checked_target_data_layout.replace("-i128:128", "");
+            }
+        }
+
+        if !custom_llvm_used && checked_target_data_layout != llvm_data_layout {
             bug!(
                 "data-layout for target `{rustc_target}`, `{rustc_layout}`, \
                   differs from LLVM target's `{llvm_target}` default layout, `{llvm_layout}`",
                 rustc_target = sess.opts.target_triple,
-                rustc_layout = target_data_layout,
+                rustc_layout = checked_target_data_layout,
                 llvm_target = sess.target.llvm_target,
                 llvm_layout = llvm_data_layout
             );

diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs
@@ -1585,13 +1585,19 @@ mod size_asserts {
     use super::*;
     use rustc_data_structures::static_assert_size;
     // tidy-alphabetical-start
-    static_assert_size!(BasicBlockData<'_>, 136);
+    // This can be removed after i128:128 is in the bootstrap compiler's target.
+    #[cfg(not(bootstrap))]
+    static_assert_size!(BasicBlockData<'_>, 144);
     static_assert_size!(LocalDecl<'_>, 40);
     static_assert_size!(SourceScopeData<'_>, 72);
     static_assert_size!(Statement<'_>, 32);
     static_assert_size!(StatementKind<'_>, 16);
-    static_assert_size!(Terminator<'_>, 104);
-    static_assert_size!(TerminatorKind<'_>, 88);
+    // This can be removed after i128:128 is in the bootstrap compiler's target.
+    #[cfg(not(bootstrap))]
+    static_assert_size!(Terminator<'_>, 112);
+    // This can be removed after i128:128 is in the bootstrap compiler's target.
+    #[cfg(not(bootstrap))]
+    static_assert_size!(TerminatorKind<'_>, 96);
     static_assert_size!(VarDebugInfo<'_>, 88);
     // tidy-alphabetical-end
 }
diff --git a/compiler/rustc_target/src/spec/i386_apple_ios.rs b/compiler/rustc_target/src/spec/i386_apple_ios.rs
@@ -11,7 +11,7 @@ pub fn target() -> Target {
         llvm_target: ios_sim_llvm_target(arch).into(),
         pointer_width: 32,
         data_layout: "e-m:o-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:128-n8:16:32-S128"
+            i128:128-f64:32:64-f80:128-n8:16:32-S128"
             .into(),
         arch: arch.target_arch(),
         options: TargetOptions {

diff --git a/compiler/rustc_target/src/spec/i686_apple_darwin.rs b/compiler/rustc_target/src/spec/i686_apple_darwin.rs
@@ -19,7 +19,7 @@ pub fn target() -> Target {
         llvm_target: macos_llvm_target(Arch::I686).into(),
         pointer_width: 32,
         data_layout: "e-m:o-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:128-n8:16:32-S128"
+            i128:128-f64:32:64-f80:128-n8:16:32-S128"
             .into(),
         arch: arch.target_arch(),
         options: TargetOptions { mcount: "\u{1}mcount".into(), ..base },

diff --git a/compiler/rustc_target/src/spec/i686_linux_android.rs b/compiler/rustc_target/src/spec/i686_linux_android.rs
@@ -17,7 +17,7 @@ pub fn target() -> Target {
         llvm_target: "i686-linux-android".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: TargetOptions { supported_sanitizers: SanitizerSet::ADDRESS, ..base },

diff --git a/compiler/rustc_target/src/spec/i686_unknown_freebsd.rs b/compiler/rustc_target/src/spec/i686_unknown_freebsd.rs
@@ -11,7 +11,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-freebsd".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: base,

diff --git a/compiler/rustc_target/src/spec/i686_unknown_haiku.rs b/compiler/rustc_target/src/spec/i686_unknown_haiku.rs
@@ -11,7 +11,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-haiku".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: base,

diff --git a/compiler/rustc_target/src/spec/i686_unknown_hurd_gnu.rs b/compiler/rustc_target/src/spec/i686_unknown_hurd_gnu.rs
@@ -11,7 +11,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-hurd-gnu".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: base,

diff --git a/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs
@@ -12,7 +12,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-linux-gnu".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: base,

diff --git a/compiler/rustc_target/src/spec/i686_unknown_linux_musl.rs b/compiler/rustc_target/src/spec/i686_unknown_linux_musl.rs
@@ -25,7 +25,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-linux-musl".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: base,

diff --git a/compiler/rustc_target/src/spec/i686_unknown_netbsd.rs b/compiler/rustc_target/src/spec/i686_unknown_netbsd.rs
@@ -11,7 +11,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-netbsdelf".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: TargetOptions { mcount: "__mcount".into(), ..base },

diff --git a/compiler/rustc_target/src/spec/i686_unknown_openbsd.rs b/compiler/rustc_target/src/spec/i686_unknown_openbsd.rs
@@ -11,7 +11,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-openbsd".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: base,

diff --git a/compiler/rustc_target/src/spec/i686_wrs_vxworks.rs b/compiler/rustc_target/src/spec/i686_wrs_vxworks.rs
@@ -11,7 +11,7 @@ pub fn target() -> Target {
         llvm_target: "i686-unknown-linux-gnu".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            f64:32:64-f80:32-n8:16:32-S128"
+            i128:128-f64:32:64-f80:32-n8:16:32-S128"
             .into(),
         arch: "x86".into(),
         options: base,

diff --git a/compiler/rustc_target/src/spec/x86_64_apple_darwin.rs b/compiler/rustc_target/src/spec/x86_64_apple_darwin.rs
@@ -18,8 +18,8 @@ pub fn target() -> Target {
         // correctly, we do too.
         llvm_target: macos_llvm_target(arch).into(),
         pointer_width: 64,
-        data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: arch.target_arch(),
         options: TargetOptions { mcount: "\u{1}mcount".into(), ..base },
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_apple_ios.rs b/compiler/rustc_target/src/spec/x86_64_apple_ios.rs
@@ -9,8 +9,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: ios_sim_llvm_target(arch).into(),
         pointer_width: 64,
-        data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: arch.target_arch(),
         options: TargetOptions {
             max_atomic_width: Some(128),

diff --git a/compiler/rustc_target/src/spec/x86_64_apple_ios_macabi.rs b/compiler/rustc_target/src/spec/x86_64_apple_ios_macabi.rs
@@ -12,8 +12,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: llvm_target.into(),
         pointer_width: 64,
-        data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: arch.target_arch(),
         options: TargetOptions {
             max_atomic_width: Some(128),

diff --git a/compiler/rustc_target/src/spec/x86_64_apple_tvos.rs b/compiler/rustc_target/src/spec/x86_64_apple_tvos.rs
@@ -6,8 +6,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: tvos_sim_llvm_target(arch).into(),
         pointer_width: 64,
-        data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: arch.target_arch(),
         options: TargetOptions {
             max_atomic_width: Some(128),

diff --git a/compiler/rustc_target/src/spec/x86_64_apple_watchos_sim.rs b/compiler/rustc_target/src/spec/x86_64_apple_watchos_sim.rs
@@ -6,8 +6,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: watchos_sim_llvm_target(arch).into(),
         pointer_width: 64,
-        data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: arch.target_arch(),
         options: TargetOptions {
             max_atomic_width: Some(128),

diff --git a/compiler/rustc_target/src/spec/x86_64_fortanix_unknown_sgx.rs b/compiler/rustc_target/src/spec/x86_64_fortanix_unknown_sgx.rs
@@ -75,8 +75,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-elf".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: opts,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_linux_android.rs b/compiler/rustc_target/src/spec/x86_64_linux_android.rs
@@ -14,8 +14,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-linux-android".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: TargetOptions { supported_sanitizers: SanitizerSet::ADDRESS, ..base },
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_pc_nto_qnx710.rs b/compiler/rustc_target/src/spec/x86_64_pc_nto_qnx710.rs
@@ -5,8 +5,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-pc-unknown".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: TargetOptions {
             cpu: "x86-64".into(),

diff --git a/compiler/rustc_target/src/spec/x86_64_pc_solaris.rs b/compiler/rustc_target/src/spec/x86_64_pc_solaris.rs
@@ -13,8 +13,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-pc-solaris".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_pc_windows_gnu.rs b/compiler/rustc_target/src/spec/x86_64_pc_windows_gnu.rs
@@ -16,8 +16,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-pc-windows-gnu".into(),
         pointer_width: 64,
-        data_layout: "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_pc_windows_gnullvm.rs b/compiler/rustc_target/src/spec/x86_64_pc_windows_gnullvm.rs
@@ -11,8 +11,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-pc-windows-gnu".into(),
         pointer_width: 64,
-        data_layout: "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_pc_windows_msvc.rs b/compiler/rustc_target/src/spec/x86_64_pc_windows_msvc.rs
@@ -9,8 +9,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-pc-windows-msvc".into(),
         pointer_width: 64,
-        data_layout: "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_sun_solaris.rs b/compiler/rustc_target/src/spec/x86_64_sun_solaris.rs
@@ -12,8 +12,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-pc-solaris".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_unikraft_linux_musl.rs b/compiler/rustc_target/src/spec/x86_64_unikraft_linux_musl.rs
@@ -5,8 +5,8 @@ pub fn target() -> Target {
         llvm_target: "x86_64-unknown-linux-musl".into(),
         pointer_width: 64,
         arch: "x86_64".into(),
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         options: TargetOptions {
             cpu: "x86-64".into(),
             plt_by_default: false,

diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_dragonfly.rs b/compiler/rustc_target/src/spec/x86_64_unknown_dragonfly.rs
@@ -11,8 +11,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-unknown-dragonfly".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_freebsd.rs b/compiler/rustc_target/src/spec/x86_64_unknown_freebsd.rs
@@ -14,8 +14,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-unknown-freebsd".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_fuchsia.rs b/compiler/rustc_target/src/spec/x86_64_unknown_fuchsia.rs
@@ -11,8 +11,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-unknown-fuchsia".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_haiku.rs b/compiler/rustc_target/src/spec/x86_64_unknown_haiku.rs
@@ -13,8 +13,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-unknown-haiku".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_hermit.rs b/compiler/rustc_target/src/spec/x86_64_unknown_hermit.rs
@@ -5,8 +5,8 @@ pub fn target() -> Target {
         llvm_target: "x86_64-unknown-hermit".into(),
         pointer_width: 64,
         arch: "x86_64".into(),
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         options: TargetOptions {
             cpu: "x86-64".into(),
             features: "+rdrnd,+rdseed".into(),

diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_illumos.rs b/compiler/rustc_target/src/spec/x86_64_unknown_illumos.rs
@@ -13,8 +13,8 @@ pub fn target() -> Target {
         // so we still pass Solaris to it
         llvm_target: "x86_64-pc-solaris".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }

diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_l4re_uclibc.rs b/compiler/rustc_target/src/spec/x86_64_unknown_l4re_uclibc.rs
@@ -10,8 +10,8 @@ pub fn target() -> Target {
     Target {
         llvm_target: "x86_64-unknown-l4re-uclibc".into(),
         pointer_width: 64,
-        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
-            .into(),
+        data_layout:
+            "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),
         arch: "x86_64".into(),
         options: base,
     }