Correctly pass backend and target to self-profile query

site/frontend/src/pages/compare/compile/table/benchmark-detail.vue

@@ -52,8 +52,8 @@ function detailedQueryLink(
   commit: ArtifactDescription,
   baseCommit?: ArtifactDescription
 ): string {
-  const {benchmark, profile, scenario} = props.testCase;
-  let link = `/detailed-query.html?commit=${commit.commit}&benchmark=${benchmark}-${profile}&scenario=${scenario}`;
+  const {benchmark, profile, scenario, backend, target} = props.testCase;
+  let link = `/detailed-query.html?commit=${commit.commit}&benchmark=${benchmark}-${profile}&scenario=${scenario}&backend=${backend}&target=${target}`;
   if (baseCommit !== undefined) {
     link += `&base_commit=${baseCommit.commit}`;
   }

site/frontend/src/pages/detailed-query/page.vue

@@ -189,7 +189,7 @@ function storeSortToUrl() {
 
 async function loadData() {
   const params = getUrlParams();
-  const {commit, base_commit, benchmark, scenario} = params;
+  const {commit, base_commit, benchmark, scenario, backend, target} = params;
 
   // Load sort state from URL
   loadSortFromUrl(params);
@@ -199,6 +199,8 @@ async function loadData() {
     base_commit: base_commit ?? null,
     benchmark,
     scenario,
+    backend,
+    target,
   };
   selector.value = currentSelector;
 

site/frontend/src/pages/detailed-query/utils.ts

@@ -9,6 +9,8 @@ export interface Selector {
   base_commit: string | null;
   benchmark: string;
   scenario: string;
+  backend: string;
+  target: string;
 }
 
 export interface ProfileElement {
@@ -100,8 +102,9 @@ export function createTitleData(selector: Selector | null): {
   let selfHref = "";
 
   if (state.base_commit) {
-    selfHref = `/detailed-query.html?commit=${state.commit}&scenario=${state.scenario}&benchmark=${state.benchmark}`;
-    baseHref = `/detailed-query.html?commit=${state.base_commit}&scenario=${state.scenario}&benchmark=${state.benchmark}`;
+    const args = `&scenario=${state.scenario}&benchmark=${state.benchmark}&backend=${state.backend}&target=${state.target}`;
+    selfHref = `/detailed-query.html?commit=${state.commit}${args}`;
+    baseHref = `/detailed-query.html?commit=${state.base_commit}${args}`;
   }
 
   return {text, baseHref, selfHref};

site/src/api.rs

@@ -490,6 +490,12 @@ pub mod self_profile {
         pub benchmark: String,
         #[serde(alias = "run_name")]
         pub scenario: String,
+        // These fields are kept optional for backwards compatibility
+        // They can be make required e.g. in 2027
+        #[serde(default)]
+        pub backend: Option<String>,
+        #[serde(default)]
+        pub target: Option<String>,
     }
 
     #[derive(Debug, Clone, Serialize)]

site/src/request_handlers/self_profile.rs

@@ -5,9 +5,9 @@ use std::time::Instant;
 
 use brotli::enc::BrotliEncoderParams;
 use bytes::Buf;
-use database::selector;
 use database::ArtifactId;
 use database::{metric::Metric, CommitType};
+use database::{selector, CodegenBackend, Target};
 use headers::{ContentType, Header};
 use hyper::StatusCode;
 
@@ -461,10 +461,23 @@ pub async fn handle_self_profile(
         .map_err(|e| format!("invalid run name: {e:?}"))?;
     let index = ctxt.index.load();
 
+    let backend: CodegenBackend = if let Some(backend) = body.backend {
+        backend.parse()?
+    } else {
+        CodegenBackend::Llvm
+    };
+    let target: Target = if let Some(target) = body.target {
+        target.parse()?
+    } else {
+        Target::X86_64UnknownLinuxGnu
+    };
+
     let query = selector::CompileBenchmarkQuery::default()
         .benchmark(selector::Selector::One(bench_name.to_string()))
         .profile(selector::Selector::One(profile.parse().unwrap()))
         .scenario(selector::Selector::One(scenario))
+        .backend(selector::Selector::One(backend))
+        .target(selector::Selector::One(target))
         .metric(selector::Selector::One(Metric::CpuClock));
 
     // Helper for finding an `ArtifactId` based on a commit sha
@@ -481,7 +494,12 @@ pub async fn handle_self_profile(
     let commits = Arc::new(commits);
 
     let mut cpu_responses = ctxt.statistic_series(query, commits.clone()).await?;
-    assert_eq!(cpu_responses.len(), 1, "all selectors are exact");
+    if cpu_responses.len() != 1 {
+        return Err(
+            "The database query returned multiple results for the given commit. This is a bug."
+                .to_string(),
+        );
+    }
     let mut cpu_response = cpu_responses.remove(0).series;
 
     let mut self_profile = get_or_download_self_profile(