From 27a2b006cdbfb05457b8cc3c478c11ec03779146 Mon Sep 17 00:00:00 2001
From: Lucas Clemente Vella <lvella@powdrlabs.com>
Date: Tue, 21 Nov 2023 11:00:51 +0000
Subject: [PATCH] Providing alloc_zeroed instead of using default
 implementation.

This may save some cycles of zeroing already zeroed memory.
---
 riscv/runtime/src/allocator.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/riscv/runtime/src/allocator.rs b/riscv/runtime/src/allocator.rs
index 7fd933c8a..8828ab729 100644
--- a/riscv/runtime/src/allocator.rs
+++ b/riscv/runtime/src/allocator.rs
@@ -27,6 +27,10 @@ impl<const SIZE: usize> FixedMemoryAllocator<SIZE> {
 
 unsafe impl<const SIZE: usize> GlobalAlloc for FixedMemoryAllocator<SIZE> {
     unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
+        self.alloc_zeroed(layout)
+    }
+
+    unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
         // Start address of the allocation array:
         let array_start = addr_of!(self.mem_buffer) as usize;