[wasm] WasmBase.IsSupported no longer returns true #88494
Description
Description
Testcase:
using System;
using System.Numerics;
public class Test
{
public static int Main () {
int sum = 0;
for (int i = 0; i < 100000000; ++i) {
sum += BitOperations.Log2 ((ulong)i);
}
return sum;
}
}
JIT debug output:
converting (in B14: stack: 0) IL_000f: call 0x0600137b
cmethod = bool System.Runtime.Intrinsics.Wasm.WasmBase:get_IsSupported ()
-> false
What seems to be happening is that the JIT first calls
arch_emit_simd_intrinsics (), which calls
if (!strcmp (class_ns, "System.Runtime.Intrinsics.Wasm")) {
return emit_hardware_intrinsics (cfg, cmethod, fsig, args,
supported_wasm_intrinsics, sizeof (supported_wasm_intrinsics),
emit_wasm_supported_intrinsics);
}
Which doesn't handle WasmBase, but it still returns a MonoInst for WasmBase:get_IsSupported (), so
arch_emit_common_intrinsics () is never called.
Reproduction Steps
.
Expected behavior
.
Actual behavior
.
Regression?
Yes
Known Workarounds
No response
Configuration
dotnet/runtime master
Other information
No response