From b46ad1b54da9910d2dda232b1e8e4c89257ea2ec Mon Sep 17 00:00:00 2001
From: Nick Fitzgerald <fitzgen@gmail.com>
Date: Wed, 4 Jan 2023 17:18:46 -0800
Subject: [PATCH] Wasmtime: set the `cranelift_wasm::Heap`'s min size (#5522)

This unlocks certain bounds checking optimizations in some
configurations. Wasn't able to measure any delta in sightglass, but still worth
doing anyways.
---
 crates/cranelift/src/func_environ.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/cranelift/src/func_environ.rs b/crates/cranelift/src/func_environ.rs
index f938d7dab7..1d41644b93 100644
--- a/crates/cranelift/src/func_environ.rs
+++ b/crates/cranelift/src/func_environ.rs
@@ -1471,7 +1471,7 @@ impl<'module_environment> cranelift_wasm::FuncEnvironment for FuncEnvironment<'m
         });
         Ok(self.heaps.push(HeapData {
             base: heap_base,
-            min_size: 0,
+            min_size: self.module.memory_plans[index].memory.minimum * u64::from(WASM_PAGE_SIZE),
             offset_guard_size,
             style: heap_style,
             index_type: self.memory_index_type(index),