perf(allocator): add #[cold] annotations to error handling functions

crates/oxc_allocator/src/bump.rs

@@ -512,6 +512,7 @@ fn layout_from_size_align(size: usize, align: usize) -> Result<Layout, AllocErr>
     Layout::from_size_align(size, align).map_err(|_| AllocErr)
 }
 
+#[cold]
 #[inline(never)]
 fn allocation_size_overflow<T>() -> T {
     panic!("requested allocation size overflowed")

crates/oxc_allocator/src/bumpalo_alloc.rs

@@ -45,10 +45,14 @@ use core::usize;
 
 pub use core::alloc::{Layout, LayoutErr};
 
+#[cold]
+#[inline(never)]
 fn new_layout_err() -> LayoutErr {
     Layout::from_size_align(1, 3).unwrap_err()
 }
 
+#[cold]
+#[inline(never)]
 pub fn handle_alloc_error(layout: Layout) -> ! {
     panic!("encountered allocation error: {:?}", layout)
 }

crates/oxc_allocator/src/vec2/raw_vec.rs

@@ -856,6 +856,8 @@ fn alloc_guard(alloc_size: usize) -> Result<(), AllocError> {
 // One central function responsible for reporting capacity overflows. This'll
 // ensure that the code generation related to these panics is minimal as there's
 // only one location which panics rather than a bunch throughout the module.
+#[cold]
+#[inline(never)]
 fn capacity_overflow() -> ! {
     panic!("capacity overflow")
 }