Enable more tests on AArch64 (#2994)

Copyright (c) 2021, Arm Limited.

tests/all/main.rs

@@ -5,7 +5,9 @@ mod debug;
 mod externals;
 mod fuel;
 mod func;
+mod funcref;
 mod fuzzing;
+mod gc;
 mod globals;
 mod host_funcs;
 mod iloop;
@@ -29,14 +31,7 @@ mod table;
 mod traps;
 mod wast;
 
-// TODO(#1886): Cranelift only supports reference types on x64.
-#[cfg(target_arch = "x86_64")]
-mod funcref;
-#[cfg(target_arch = "x86_64")]
-mod gc;
-
 /// A helper to compile a module in a new store with reference types enabled.
-#[cfg(target_arch = "x86_64")]
 pub(crate) fn ref_types_module(
     source: &str,
 ) -> anyhow::Result<(wasmtime::Store<()>, wasmtime::Module)> {
@@ -54,3 +49,11 @@ pub(crate) fn ref_types_module(
 
     Ok((store, module))
 }
+
+/// A helper determining whether the pooling allocator tests should be skipped.
+pub(crate) fn skip_pooling_allocator_tests() -> bool {
+    // There are a couple of issues when running the pooling allocator tests under QEMU:
+    // - high memory usage that may exceed the limits imposed by the environment (e.g. CI)
+    // - https://github.com/bytecodealliance/wasmtime/pull/2518#issuecomment-747280133
+    std::env::var("WASMTIME_TEST_NO_HOG_MEMORY").is_ok()
+}