Update compiletest's has_asm_support to match rustc

The list of `ASM_SUPPORTED_ARCHS` was missing a few from the compiler's
actual stable list.

Author: cuviper

compiler/rustc_ast_lowering/src/asm.rs

@@ -38,6 +38,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
 }
 ifletSome(asm_arch) = asm_arch {
 // Inline assembly is currently only stable for these architectures.
+// (See also compiletest's `has_asm_support`.)
 let is_stable = matches!(
  asm_arch,
  asm::InlineAsmArch::X86

src/tools/compiletest/src/common.rs

@@ -481,9 +481,17 @@ impl Config {
 }
 
 pubfnhas_asm_support(&self) -> bool{
+// This should match the stable list in `LoweringContext::lower_inline_asm`.
 staticASM_SUPPORTED_ARCHS:&[&str] = &[
-"x86","x86_64","arm","aarch64","riscv32",
+"x86",
+"x86_64",
+"arm",
+"aarch64",
+"arm64ec",
+"riscv32",
 "riscv64",
+"loongarch64",
+"s390x",
 // These targets require an additional asm_experimental_arch feature.
 // "nvptx64", "hexagon", "mips", "mips64", "spirv", "wasm32",
 ];