Sort symbol names by demangled name first to avoid different ordering on hash changes by panstromek · Pull Request #162003 · rust-lang/rust

panstromek · 2026-08-30T09:39:51Z

View all comments

fixes #152910

For now just experimenting here to see whether this helps rustc-perf noise

… on hash changes

panstromek · 2026-08-30T09:40:07Z

@bors try @rust-timer queue

Sort symbol names by demangled name first to avoid different ordering on hash chanes

panstromek · 2026-08-30T09:43:06Z

I'll do initial perf run, and then I'll try to push a few no-op changes and do perf on those (always using the same parent) to see how this affects artifact noise.

rust-bors · 2026-08-30T10:40:17Z

☀️ Try build successful (CI)
Build commit: 9b041cc (9b041ccfacbdc9bb94384021e11a2192221a0718)
Base parent: 3cabe36 (3cabe36ceb022e2f56d4d330b1e2886f31117f18)

Kobzol · 2026-08-30T10:50:00Z

Interested in the perf. here, as this was quite hot on some benchmarks, IIRC (but it only showed in cycles).

panstromek · 2026-08-30T10:58:59Z

I believe this should mostly preserve the properties of the ordering you introduced in #145358. It should effectively just move the crate hash to the end. (unless I messed this up :D)

Not sure about the demangled string and comparison perf, but at the moment I just want to diff this against future runs, so this should be fine for a prototype.

rust-timer · 2026-08-30T11:23:51Z

Finished benchmarking commit (9b041cc): comparison URL.

Overall result: ❌ regressions - please read:

Benchmarking means the PR may be perf-sensitive. It's automatically marked not fit for rolling up. Overriding is possible but disadvised: it risks changing compiler perf.

Next, please: If you can, justify the regressions found in this try perf run in writing along with @rustbot label: +perf-regression-triaged. If not, fix the regressions and do another perf run. Neutral or positive results will clear the label automatically.

@bors rollup=never rustc-perf
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	0.4%	[0.1%, 1.3%]	55
Regressions ❌ (secondary)	0.7%	[0.1%, 2.1%]	67
Improvements ✅ (primary)	-0.4%	[-0.7%, -0.1%]	6
Improvements ✅ (secondary)	-0.4%	[-0.7%, -0.2%]	11
All ❌✅ (primary)	0.3%	[-0.7%, 1.3%]	61

Max RSS (memory usage)

Results (primary 0.7%, secondary -2.0%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.8%	[2.4%, 3.2%]	2
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-3.6%	[-3.6%, -3.6%]	1
Improvements ✅ (secondary)	-2.0%	[-2.0%, -2.0%]	1
All ❌✅ (primary)	0.7%	[-3.6%, 3.2%]	3

Cycles

Results (primary 2.6%, secondary 2.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.6%	[2.6%, 2.6%]	1
Regressions ❌ (secondary)	2.4%	[2.3%, 2.6%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	2.6%	[2.6%, 2.6%]	1

Binary size

Results (primary -0.0%, secondary -0.0%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	0.0%	[0.0%, 0.1%]	19
Regressions ❌ (secondary)	0.0%	[0.0%, 0.1%]	23
Improvements ✅ (primary)	-0.1%	[-0.3%, -0.0%]	14
Improvements ✅ (secondary)	-0.1%	[-0.6%, -0.0%]	6
All ❌✅ (primary)	-0.0%	[-0.3%, 0.1%]	33

Bootstrap: 475.389s -> 477.502s (0.44%)
Artifact size: 402.85 MiB -> 402.81 MiB (-0.01%)

panstromek · 2026-08-30T11:30:14Z

Interesting, that's quite an impact. Anyway, let's try the no-op change.

@bors try parent=9b041ccfacbdc9bb94384021e11a2192221a0718
@rust-timer queue

Sort symbol names by demangled name first to avoid different ordering on hash changes

rust-bors · 2026-08-30T12:35:50Z

☀️ Try build successful (CI)
Build commit: fc7d1f2 (fc7d1f2ff50c0f99e7e96f8bdf291d9a4c5fdcd9)
Base parent: 9b041cc (9b041ccfacbdc9bb94384021e11a2192221a0718)

rust-timer · 2026-08-30T13:55:50Z

Finished benchmarking commit (fc7d1f2): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking means the PR may be perf-sensitive. Consider adding rollup=never if this change is not fit for rolling up.

@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

Results (primary -0.4%, secondary -0.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	0.9%	[0.4%, 5.0%]	17
Regressions ❌ (secondary)	0.9%	[0.4%, 2.7%]	42
Improvements ✅ (primary)	-1.2%	[-6.7%, -0.4%]	30
Improvements ✅ (secondary)	-0.9%	[-4.8%, -0.4%]	50
All ❌✅ (primary)	-0.4%	[-6.7%, 5.0%]	47

Cycles

Results (primary -0.1%, secondary -0.2%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	0.9%	[0.4%, 2.8%]	59
Regressions ❌ (secondary)	1.2%	[0.4%, 7.3%]	114
Improvements ✅ (primary)	-0.9%	[-2.9%, -0.4%]	75
Improvements ✅ (secondary)	-1.9%	[-15.7%, -0.4%]	94
All ❌✅ (primary)	-0.1%	[-2.9%, 2.8%]	134

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 477.502s -> 476.641s (-0.18%)
Artifact size: 402.81 MiB -> 400.85 MiB (-0.49%)

rust-log-analyzer · 2026-08-30T16:12:53Z

The job aarch64-gnu-llvm-21-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

-    |
- LL |     intrinsics::simd::simd_add(a, b)
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
7 error[E0511]: invalid monomorphization of `cttz` intrinsic: expected basic integer type, found `Foo`
8   --> $DIR/bad-intrinsic-monomorphization.rs:16:5
9    |

10 LL |     intrinsics::cttz(v)
11    |     ^^^^^^^^^^^^^^^^^^^
---
14 

Note: some mismatched output was normalized before being compared
-   --> /checkout/tests/ui/intrinsics/bad-intrinsic-monomorphization.rs:16:5
+ error[E0511]: invalid monomorphization of `cttz` intrinsic: expected basic integer type, found `Foo`
+   --> $DIR/bad-intrinsic-monomorphization.rs:16:5
+    |
+ LL |     intrinsics::cttz(v)
+    |     ^^^^^^^^^^^^^^^^^^^
+ 
---
To only update this specific test, also pass `--test-args intrinsics/bad-intrinsic-monomorphization.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/intrinsics/bad-intrinsic-monomorphization.rs" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/intrinsics/bad-intrinsic-monomorphization" "-Znext-solver=coherence" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0511]: invalid monomorphization of `cttz` intrinsic: expected basic integer type, found `Foo`
##[error]  --> /checkout/tests/ui/intrinsics/bad-intrinsic-monomorphization.rs:16:5
   |
LL |     intrinsics::cttz(v)
   |     ^^^^^^^^^^^^^^^^^^^

---

- error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
-   --> $DIR/non-integer-atomic.rs:55:5
-    |
- LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
- error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
-   --> $DIR/non-integer-atomic.rs:65:5
-    |
- LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
- error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `Foo`
-   --> $DIR/non-integer-atomic.rs:35:5
-    |
- LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
- error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `Foo`
-   --> $DIR/non-integer-atomic.rs:45:5
-    |
- LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
25 error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
26   --> $DIR/non-integer-atomic.rs:70:5
27    |

28 LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
29    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
30 
+ error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
+   --> $DIR/non-integer-atomic.rs:55:5
+    |
+ LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
31 error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
32   --> $DIR/non-integer-atomic.rs:60:5
33    |

34 LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
35    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
36 
+ error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
+   --> $DIR/non-integer-atomic.rs:65:5
+    |
+ LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
37 error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `Foo`
38   --> $DIR/non-integer-atomic.rs:50:5
39    |

40 LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
41    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
42 
+ error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `Foo`
+   --> $DIR/non-integer-atomic.rs:35:5
+    |
+ LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
43 error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `Foo`
44   --> $DIR/non-integer-atomic.rs:40:5
45    |

46 LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
47    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
48 
- error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
-   --> $DIR/non-integer-atomic.rs:75:5
+ error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `Foo`
+   --> $DIR/non-integer-atomic.rs:45:5
51    |
- LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
- error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
-   --> $DIR/non-integer-atomic.rs:85:5
-    |
58 LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
59    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
60 

- error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `bool`
-   --> $DIR/non-integer-atomic.rs:15:5
-    |
- LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
- error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `bool`
-   --> $DIR/non-integer-atomic.rs:25:5
-    |
- LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- 
73 error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
74   --> $DIR/non-integer-atomic.rs:90:5
75    |

76 LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
77    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
78 
+ error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
+   --> $DIR/non-integer-atomic.rs:75:5
+    |
+ LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
79 error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
80   --> $DIR/non-integer-atomic.rs:80:5
81    |

82 LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
83    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
84 
+ error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
+   --> $DIR/non-integer-atomic.rs:85:5
+    |
+ LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
85 error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `bool`
86   --> $DIR/non-integer-atomic.rs:30:5
87    |

88 LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
89    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
90 
+ error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `bool`
+   --> $DIR/non-integer-atomic.rs:15:5
+    |
+ LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
91 error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `bool`
92   --> $DIR/non-integer-atomic.rs:20:5
93    |

94 LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
95    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
+ error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `bool`
+   --> $DIR/non-integer-atomic.rs:25:5
+    |
+ LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
96 
97 error: aborting due to 16 previous errors
98 

---
-   --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:75:5
-   --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:80:5
-   --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:30:5
-   --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:20:5
+ error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
+   --> $DIR/non-integer-atomic.rs:70:5
+    |
+ LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
+ error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
+   --> $DIR/non-integer-atomic.rs:60:5
+    |
+ LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
+ error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `Foo`
+   --> $DIR/non-integer-atomic.rs:50:5
+    |
+ LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
+ error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `Foo`
+   --> $DIR/non-integer-atomic.rs:40:5
+    |
+ LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
+ error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
+   --> $DIR/non-integer-atomic.rs:90:5
+ error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
+   --> $DIR/non-integer-atomic.rs:75:5
+ LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
+   --> $DIR/non-integer-atomic.rs:80:5
+ error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `bool`
+   --> $DIR/non-integer-atomic.rs:30:5
+    |
+ LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 
+ error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `bool`
+   --> $DIR/non-integer-atomic.rs:20:5
+    |
+ LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
+    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ 


The actual stderr differed from the expected stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args intrinsics/non-integer-atomic.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/intrinsics/non-integer-atomic.rs" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/intrinsics/non-integer-atomic" "-Znext-solver=coherence" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:70:5
   |
LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:55:5
   |
LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:60:5
   |
LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `&dyn Fn()`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:65:5
   |
LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `Foo`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:50:5
   |
LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `Foo`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:35:5
   |
LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `Foo`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:40:5
   |
LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `Foo`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:45:5
   |
LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:90:5
   |
LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:75:5
   |
LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:80:5
   |
LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `[u8; 100]`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:85:5
   |
LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_cxchg` intrinsic: expected basic integer or pointer type, found `bool`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:30:5
   |
LL |     intrinsics::atomic_cxchg::<_, { SeqCst }, { SeqCst }>(p, v, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_load` intrinsic: expected basic integer or pointer type, found `bool`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:15:5
   |
LL |     intrinsics::atomic_load::<_, { SeqCst }, false>(p);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_store` intrinsic: expected basic integer or pointer type, found `bool`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:20:5
   |
LL |     intrinsics::atomic_store::<_, { SeqCst }, false>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0511]: invalid monomorphization of `atomic_xchg` intrinsic: expected basic integer or pointer type, found `bool`
##[error]  --> /checkout/tests/ui/intrinsics/non-integer-atomic.rs:25:5
   |
LL |     intrinsics::atomic_xchg::<_, { SeqCst }>(p, v);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 16 previous errors

For more information about this error, try `rustc --explain E0511`.

panstromek · 2026-08-30T16:23:00Z

@bors try parent=fc7d1f2ff50c0f99e7e96f8bdf291d9a4c5fdcd9
@rust-timer queue

Sort symbol names by demangled name first to avoid different ordering on hash changes

rust-bors · 2026-08-30T17:22:53Z

☀️ Try build successful (CI)
Build commit: d6cf21d (d6cf21dfb294e70b68e0b9d16e097a6d53652706)
Base parent: fc7d1f2 (fc7d1f2ff50c0f99e7e96f8bdf291d9a4c5fdcd9)

rust-timer · 2026-08-30T18:34:50Z

Finished benchmarking commit (d6cf21d): comparison URL.

Overall result: ❌ regressions - no action needed

Benchmarking means the PR may be perf-sensitive. Consider adding rollup=never if this change is not fit for rolling up.

@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.3%	[0.3%, 0.3%]	5
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (primary 0.5%, secondary 0.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	1.1%	[0.4%, 5.8%]	48
Regressions ❌ (secondary)	1.1%	[0.4%, 7.5%]	68
Improvements ✅ (primary)	-0.8%	[-1.3%, -0.4%]	21
Improvements ✅ (secondary)	-1.0%	[-4.9%, -0.4%]	61
All ❌✅ (primary)	0.5%	[-1.3%, 5.8%]	69

Cycles

Results (primary 0.2%, secondary 0.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	0.8%	[0.4%, 2.0%]	94
Regressions ❌ (secondary)	1.3%	[0.4%, 9.4%]	123
Improvements ✅ (primary)	-0.8%	[-2.4%, -0.4%]	48
Improvements ✅ (secondary)	-1.3%	[-7.1%, -0.4%]	105
All ❌✅ (primary)	0.2%	[-2.4%, 2.0%]	142

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 476.641s -> 482.1s (1.15%)
Artifact size: 400.85 MiB -> 402.86 MiB (0.50%)

Sort symbol names by demangled name first to avoid different ordering…

0692163

… on hash changes

rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Aug 30, 2026