Auto merge of #111575 - alex:patch-1, r=pietroalbini

Enable sanitizers and profiler for aarch64-unknown-linux-musl

This is pretty heavily cargo-culted, hopefully I didn't screw it up too badly.

compiler/rustc_target/src/spec/aarch64_unknown_linux_musl.rs

@@ -1,10 +1,15 @@
-use crate::spec::{Target, TargetOptions};
+use crate::spec::{SanitizerSet, Target, TargetOptions};
 
 pub fn target() -> Target {
     let mut base = super::linux_musl_base::opts();
     base.max_atomic_width = Some(128);
     base.supports_xray = true;
     base.features = "+v8a".into();
+    base.supported_sanitizers = SanitizerSet::ADDRESS
+        | SanitizerSet::CFI
+        | SanitizerSet::LEAK
+        | SanitizerSet::MEMORY
+        | SanitizerSet::THREAD;
 
     Target {
         llvm_target: "aarch64-unknown-linux-musl".into(),

src/ci/docker/host-x86_64/dist-arm-linux/Dockerfile

@@ -33,6 +33,11 @@ ENV CC_arm_unknown_linux_gnueabi=arm-unknown-linux-gnueabi-gcc \
 
 ENV HOSTS=arm-unknown-linux-gnueabi,aarch64-unknown-linux-musl
 
-ENV RUST_CONFIGURE_ARGS --enable-full-tools --disable-docs --musl-root-aarch64=/usr/local/aarch64-linux-musl \
-    --set target.aarch64-unknown-linux-musl.crt-static=false
+ENV RUST_CONFIGURE_ARGS \
+      --enable-full-tools \
+      --disable-docs \
+      --musl-root-aarch64=/usr/local/aarch64-linux-musl \
+      --enable-sanitizers \
+      --enable-profiler \
+      --set target.aarch64-unknown-linux-musl.crt-static=false
 ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS