Flag pulley as not supporting most wasm features (#9648)

This commit updates `Config::compiler_panicking_wasm_features` to
include most wasm features for pulley targets. These backends in
Cranelift don't support most instructions at this time and have lots of
`todo!()`-related panics here and there. This won't completely cover all
panics but it's at least a start.

Author: alexcrichton

crates/wasmtime/src/config.rs

@@ -1898,7 +1898,42 @@ impl Config {
     fn compiler_panicking_wasm_features(&self) -> WasmFeatures {
         #[cfg(any(feature = "cranelift", feature = "winch"))]
         match self.compiler_config.strategy {
-            None | Some(Strategy::Cranelift) => WasmFeatures::empty(),
+            None | Some(Strategy::Cranelift) => match self.compiler_target().architecture {
+                // Pulley doesn't support most of wasm at this time and there's
+                // lots of panicking bits and pieces within the backend. This
+                // doesn't fully cover all panicking cases but it's at least a
+                // starting place to have a ratchet. As the pulley backend is
+                // developed this'll get filtered down over time.
+                target_lexicon::Architecture::Pulley32 | target_lexicon::Architecture::Pulley64 => {
+                    WasmFeatures::SATURATING_FLOAT_TO_INT
+                        | WasmFeatures::SIGN_EXTENSION
+                        | WasmFeatures::REFERENCE_TYPES
+                        | WasmFeatures::MULTI_VALUE
+                        | WasmFeatures::BULK_MEMORY
+                        | WasmFeatures::SIMD
+                        | WasmFeatures::RELAXED_SIMD
+                        | WasmFeatures::THREADS
+                        | WasmFeatures::SHARED_EVERYTHING_THREADS
+                        | WasmFeatures::TAIL_CALL
+                        | WasmFeatures::FLOATS
+                        | WasmFeatures::MULTI_MEMORY
+                        | WasmFeatures::EXCEPTIONS
+                        | WasmFeatures::MEMORY64
+                        | WasmFeatures::EXTENDED_CONST
+                        | WasmFeatures::FUNCTION_REFERENCES
+                        | WasmFeatures::MEMORY_CONTROL
+                        | WasmFeatures::GC
+                        | WasmFeatures::CUSTOM_PAGE_SIZES
+                        | WasmFeatures::LEGACY_EXCEPTIONS
+                        | WasmFeatures::GC_TYPES
+                        | WasmFeatures::STACK_SWITCHING
+                        | WasmFeatures::WIDE_ARITHMETIC
+                }
+
+                // Other Cranelift backends are either 100% missing or complete
+                // at this time, so no need to further filter.
+                _ => WasmFeatures::empty(),
+            },
             Some(Strategy::Winch) => {
                 let mut unsupported = WasmFeatures::GC
                     | WasmFeatures::FUNCTION_REFERENCES