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# mrustc is much better at enum packing, so causes almost all of these to be smaller by one pointer
--- compiler/rustc_ast/src/ast.rs
+++ compiler/rustc_ast/src/ast.rs
@@ -1075,7 +1075,7 @@ pub struct Expr {
}
// `Expr` is used a lot. Make sure it doesn't unintentionally get bigger.
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler = "mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(Expr, 104);
impl Expr {
@@ -2779,7 +2779,7 @@ pub enum AssocItemKind {
MacCall(MacCall),
}
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler = "mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(AssocItemKind, 72);
impl AssocItemKind {
@@ -2831,7 +2831,7 @@ pub enum ForeignItemKind {
MacCall(MacCall),
}
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler="mrustc"),target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(ForeignItemKind, 72);
impl From<ForeignItemKind> for ItemKind {
--- compiler/rustc_hir/src/hir.rs
+++ compiler/rustc_hir/src/hir.rs
@@ -3050,3 +3050,3 @@
// Some nodes are used a lot. Make sure they don't unintentionally get bigger.
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler="mrustc"),target_arch = "x86_64", target_pointer_width = "64"))]
mod size_asserts {
--- compiler/rustc_middle/src/mir/interpret/error.rs
+++ compiler/rustc_middle/src/mir/interpret/error.rs
@@ -452,2 +452,2 @@
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler="mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
static_assert_size!(InterpError<'_>, 64);
--- compiler/rustc_middle/src/mir/mod.rs
+++ compiler/rustc_middle/src/mir/mod.rs
@@ -2203,2 +2203,2 @@
-#[cfg(target_arch = "x86_64")]
+#[cfg(all(not(rust_compiler="mrustc"), target_arch = "x86_64"))]
static_assert_size!(AggregateKind<'_>, 48);
--- compiler/rustc_middle/src/thir.rs
+++ compiler/rustc_middle/src/thir.rs
@@ -147,2 +147,2 @@
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler="mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(Expr<'_>, 144);
--- compiler/rustc_mir/src/interpret/place.rs
+++ compiler/rustc_mir/src/interpret/place.rs
@@ -91,2 +91,2 @@
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler = "mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(Place, 64);
@@ -100,2 +100,2 @@
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler = "mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(PlaceTy<'_>, 80);
--- compiler/rustc_mir/src/interpret/operand.rs
+++ compiler/rustc_mir/src/interpret/operand.rs
@@ -35,2 +35,2 @@
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler = "mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(Immediate, 56);
@@ -90,2 +90,2 @@
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(not(rust_compiler = "mrustc"), target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(ImmTy<'_>, 72);
#
# Disable crc32fast's use of stdarch
#
--- vendor/crc32fast/src/specialized/mod.rs
+++ vendor/crc32fast/src/specialized/mod.rs
@@ -1,5 +1,6 @@
cfg_if! {
if #[cfg(all(
+ not(rust_compiler = "mrustc"),
crc32fast_stdarchx86,
any(target_arch = "x86", target_arch = "x86_64")
))] {
#
# Disable std_detect's detection logic (use the same logic as miri)
#
--- library/stdarch/crates/std_detect/src/detect/mod.rs
+++ library/stdarch/crates/std_detect/src/detect/mod.rs
@@ -88,2 +88,2 @@
cfg_if! {
- if #[cfg(miri)] {
+ if #[cfg(any(miri, rust_compiler = "mrustc"))] {
# PPV-Lite also needs to know that we're pretending to be miri
--- vendor/ppv-lite86/src/lib.rs
+++ vendor/ppv-lite86/src/lib.rs
@@ -12,9 +12,9 @@
-#[cfg(all(feature = "simd", target_arch = "x86_64", not(miri)))]
+#[cfg(all(feature = "simd", target_arch = "x86_64", not(miri), not(rust_compiler = "mrustc")))]
pub mod x86_64;
-#[cfg(all(feature = "simd", target_arch = "x86_64", not(miri)))]
+#[cfg(all(feature = "simd", target_arch = "x86_64", not(miri), not(rust_compiler = "mrustc")))]
use self::x86_64 as arch;
-#[cfg(any(miri, not(all(feature = "simd", any(target_arch = "x86_64")))))]
+#[cfg(any(miri, rust_compiler = "mrustc", not(all(feature = "simd", any(target_arch = "x86_64")))))]
pub mod generic;
-#[cfg(any(miri, not(all(feature = "simd", any(target_arch = "x86_64")))))]
+#[cfg(any(miri, rust_compiler = "mrustc", not(all(feature = "simd", any(target_arch = "x86_64")))))]
use self::generic as arch;
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