Rollup merge of #119365 - nbdd0121:asm-goto, r=Amanieu

Add asm goto support to `asm!`

Tracking issue: #119364

This PR implements asm-goto support, using the syntax described in "future possibilities" section of [RFC2873](https://rust-lang.github.io/rfcs/2873-inline-asm.html#asm-goto).

Currently I have only implemented the `label` part, not the `fallthrough` part (i.e. fallthrough is implicit). This doesn't reduce the expressive though, since you can use label-break to get arbitrary control flow or simply set a value and rely on jump threading optimisation to get the desired control flow. I can add that later if deemed necessary.

r? ``@Amanieu``
cc ``@ojeda``

compiler/rustc_codegen_llvm/src/intrinsic.rs

@@ -448,12 +448,14 @@ impl<'ll, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                     constraint,
                     inputs,
                     self.type_void(),
+                    &[],
                     true,
                     false,
                     llvm::AsmDialect::Att,
                     &[span],
                     false,
                     None,
+                    None,
                 )
                 .unwrap_or_else(|| bug!("failed to generate inline asm call for `black_box`"));