Allow user to specify aliasing model for Miri

compiler/base/cargo-miri-playground

@@ -3,5 +3,5 @@
 set -eu
 
 export MIRI_SYSROOT=~/.cache/miri
-export MIRIFLAGS="-Zmiri-disable-isolation"
+export MIRIFLAGS="${MIRIFLAGS:-} -Zmiri-disable-isolation"
 exec cargo miri run

compiler/base/orchestrator/src/coordinator.rs

@@ -243,6 +243,12 @@ pub enum Channel {
     Nightly,
 }
 
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+pub enum AliasingModel {
+    Stacked,
+    Tree,
+}
+
 impl Channel {
     #[cfg(test)]
     pub(crate) const ALL: [Self; 3] = [Self::Stable, Self::Beta, Self::Nightly];
@@ -656,6 +662,7 @@ pub struct MiriRequest {
     pub channel: Channel,
     pub crate_type: CrateType,
     pub edition: Edition,
+    pub aliasing_model: AliasingModel,
     pub code: String,
 }
 
@@ -672,7 +679,12 @@ impl MiriRequest {
         ExecuteCommandRequest {
             cmd: "cargo".to_owned(),
             args: vec!["miri-playground".to_owned()],
-            envs: Default::default(),
+            envs: match self.aliasing_model {
+                AliasingModel::Stacked => Default::default(),
+                AliasingModel::Tree => [("MIRIFLAGS".to_owned(), "-Zmiri-tree-borrows".to_owned())]
+                    .into_iter()
+                    .collect(),
+            },
             cwd: None,
         }
     }
@@ -3869,6 +3881,7 @@ mod tests {
         channel: Channel::Nightly,
         crate_type: CrateType::Binary,
         edition: Edition::Rust2021,
+        aliasing_model: AliasingModel::Stacked,
         code: String::new(),
     };
 

compiler/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -euv -o pipefail
 

compiler/fetch.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -euv -o pipefail
 

ui/frontend/AdvancedOptionsMenu.tsx

@@ -4,19 +4,22 @@ import * as config from './reducers/configuration';
 import { Either as EitherConfig, Select as SelectConfig } from './ConfigElement';
 import MenuGroup from './MenuGroup';
 import * as selectors from './selectors';
-import { Backtrace, Channel, Edition } from './types';
+import { Backtrace, Channel, Edition, AliasingModel } from './types';
 import { useAppDispatch, useAppSelector } from './hooks';
 
 const AdvancedOptionsMenu: React.FC = () => {
   const isEditionDefault = useAppSelector(selectors.isEditionDefault);
   const edition = useAppSelector((state) => state.configuration.edition);
   const isBacktraceSet = useAppSelector(selectors.getBacktraceSet);
   const backtrace = useAppSelector((state) => state.configuration.backtrace);
+  const isAliasingModelDefault = useAppSelector(selectors.isAliasingModelDefault);
+  const aliasingModel = useAppSelector((state) => state.configuration.aliasingModel);
 
   const dispatch = useAppDispatch();
 
   const changeEdition = useCallback((e: Edition) => dispatch(config.changeEdition(e)), [dispatch]);
   const changeBacktrace = useCallback((b: Backtrace) => dispatch(config.changeBacktrace(b)), [dispatch]);
+  const changeAliasingModel = useCallback((b: AliasingModel) => dispatch(config.changeAliasingModel(b)), [dispatch]);
 
   const channel  = useAppSelector((state) => state.configuration.channel);
   const switchText = (channel !== Channel.Nightly) ? ' (will select nightly Rust)' : '';
@@ -43,6 +46,16 @@ const AdvancedOptionsMenu: React.FC = () => {
         value={backtrace}
         isNotDefault={isBacktraceSet}
         onChange={changeBacktrace} />
+
+      <EitherConfig
+        id="aliasingModel"
+        name="Aliasing model"
+        a={AliasingModel.Stacked}
+        b={AliasingModel.Tree}
+        value={aliasingModel}
+        isNotDefault={!isAliasingModelDefault}
+        onChange={changeAliasingModel} />
+
     </MenuGroup>
   );
 };

ui/frontend/reducers/configuration.ts

@@ -7,6 +7,7 @@ import {
   Channel,
   DemangleAssembly,
   Edition,
+  AliasingModel,
   Editor,
   Mode,
   Orientation,
@@ -35,6 +36,7 @@ interface State {
   mode: Mode;
   edition: Edition;
   backtrace: Backtrace;
+  aliasingModel: AliasingModel;
 }
 
 const initialState: State = {
@@ -56,6 +58,7 @@ const initialState: State = {
   mode: Mode.Debug,
   edition: Edition.Rust2021,
   backtrace: Backtrace.Disabled,
+  aliasingModel: AliasingModel.Stacked,
 };
 
 const slice = createSlice({
@@ -74,6 +77,10 @@ const slice = createSlice({
       state.backtrace = action.payload;
     },
 
+    changeAliasingModel: (state, action: PayloadAction<AliasingModel>) => {
+      state.aliasingModel = action.payload;
+    },
+
     changeChannel: (state, action: PayloadAction<Channel>) => {
       state.channel = action.payload;
     },
@@ -124,6 +131,7 @@ export const {
   changeAceTheme,
   changeAssemblyFlavor,
   changeBacktrace,
+  changeAliasingModel,
   changeChannel,
   changeDemangleAssembly,
   changeEditionRaw,

ui/frontend/reducers/output/miri.ts

@@ -4,6 +4,7 @@ import * as z from 'zod';
 import { jsonPost, routes } from '../../api';
 import { State as RootState } from '../../reducers';
 import { miriRequestSelector } from '../../selectors';
+import { AliasingModel } from '../../types';
 
 const sliceName = 'output/miri';
 
@@ -21,6 +22,7 @@ interface State {
 interface MiriRequestBody {
   code: string;
   edition: string;
+  aliasingModel: AliasingModel,
 }
 
 const MiriResponseBody = z.object({

ui/frontend/selectors/index.ts

@@ -6,6 +6,7 @@ import {
   Backtrace,
   Channel,
   Edition,
+  AliasingModel,
   Focus,
   Orientation,
   PrimaryActionAuto,
@@ -147,6 +148,7 @@ export const rustfmtVersionDetailsText = createSelector(getRustfmt, versionDetai
 export const miriVersionDetailsText = createSelector(getMiri, versionDetails);
 
 const editionSelector = (state: State) => state.configuration.edition;
+export const aliasingModelSelector = (state: State) => state.configuration.aliasingModel;
 
 export const isNightlyChannel = createSelector(
   channelSelector,
@@ -175,6 +177,11 @@ export const isEditionDefault = createSelector(
   edition => edition == Edition.Rust2021,
 );
 
+export const isAliasingModelDefault = createSelector(
+  aliasingModelSelector,
+  aliasingModel => aliasingModel == AliasingModel.Stacked,
+);
+
 export const getBacktraceSet = (state: State) => (
   state.configuration.backtrace !== Backtrace.Disabled
 );
@@ -388,7 +395,8 @@ export const formatRequestSelector = createSelector(
 export const miriRequestSelector = createSelector(
   editionSelector,
   codeSelector,
-  (edition, code) => ({ edition, code }),
+  aliasingModelSelector,
+  (edition, code, aliasingModel) => ({ edition, code, aliasingModel }),
 );
 
 export const macroExpansionRequestSelector = createSelector(

ui/frontend/types.ts

@@ -144,6 +144,11 @@ export enum Backtrace {
   Enabled = 'enabled',
 }
 
+export enum AliasingModel {
+  Stacked = 'stacked',
+  Tree = 'tree',
+}
+
 export enum Focus {
   Clippy = 'clippy',
   Miri = 'miri',

ui/src/metrics.rs

@@ -351,6 +351,8 @@ impl HasLabelsCore for coordinator::MiriRequest {
             channel,
             crate_type,
             edition,
+            // REVIEW: should I add aliasing_model to `LabelsCore`?
+            aliasing_model: _,
             code: _,
         } = *self;
 

ui/src/public_http_api.rs

@@ -103,6 +103,8 @@ pub(crate) struct MiriRequest {
     pub(crate) code: String,
     #[serde(default)]
     pub(crate) edition: String,
+    #[serde(default, rename = "aliasingModel")]
+    pub(crate) aliasing_model: String,
 }
 
 #[derive(Debug, Clone, Serialize)]

ui/src/server_axum.rs

@@ -1479,12 +1479,13 @@ pub(crate) mod api_orchestrator_integration_impls {
         type Error = ParseMiriRequestError;
 
         fn try_from(other: api::MiriRequest) -> std::result::Result<Self, Self::Error> {
-            let api::MiriRequest { code, edition } = other;
+            let api::MiriRequest { code, edition, aliasing_model } = other;
 
             Ok(MiriRequest {
                 channel: Channel::Nightly,     // TODO: use what user has submitted
                 crate_type: CrateType::Binary, // TODO: use what user has submitted
                 edition: parse_edition(&edition)?,
+                aliasing_model: parse_aliasing_model(&aliasing_model)?,
                 code,
             })
         }
@@ -1494,6 +1495,8 @@ pub(crate) mod api_orchestrator_integration_impls {
     pub(crate) enum ParseMiriRequestError {
         #[snafu(transparent)]
         Edition { source: ParseEditionError },
+        #[snafu(transparent)]
+        AliasingMode { source: ParseAliasingModelError },
     }
 
     impl From<WithOutput<MiriResponse>> for api::MiriResponse {
@@ -1709,12 +1712,26 @@ pub(crate) mod api_orchestrator_integration_impls {
         })
     }
 
+    pub(crate) fn parse_aliasing_model(s: &str) -> Result<AliasingModel, ParseAliasingModelError> {
+        Ok(match s {
+            "stacked" => AliasingModel::Stacked,
+            "tree" => AliasingModel::Tree,
+            value => return ParseAliasingModelSnafu { value }.fail(),
+        })
+    }
+
     #[derive(Debug, Snafu)]
     #[snafu(display("'{value}' is not a valid edition"))]
     pub(crate) struct ParseEditionError {
         value: String,
     }
 
+    #[derive(Debug, Snafu)]
+    #[snafu(display("'{value}' is not a valid aliasing model"))]
+    pub(crate) struct ParseAliasingModelError {
+        value: String,
+    }
+
     impl From<gist::Gist> for api::MetaGistResponse {
         fn from(me: gist::Gist) -> Self {
             api::MetaGistResponse {