[DO NOT MERGE] adapt test stderr for LLVM 18 changes

[krasimirgg]

Example stderr updates for #119120.

r? @ghost

[rust-log-analyzer]

The job x86_64-gnu-llvm-16 failed! Check out the build log: (web) (plain)

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GOROOT_1_19_X64=/opt/hostedtoolcache/go/1.19.13/x64
---
Built container sha256:9c3c93a371e5aed5c18185b24f130d95d5140dbd72a9b325e7b6b49e521a4faa
Looks like docker image is the same as before, not uploading
https://ci-caches.rust-lang.org/docker/7ebc15c01a233894034d277c8cce4e949f4e7791f66b4727c8fb6e058a0b8171d6152e1441d677cef0653843ceeee469c097b8699b2bb74249e674f6aa1a8813
sha256:9c3c93a371e5aed5c18185b24f130d95d5140dbd72a9b325e7b6b49e521a4faa
Setting extra environment values for docker:  --env ENABLE_GCC_CODEGEN=1 --env GCC_EXEC_PREFIX=/usr/lib/gcc/
[CI_JOB_NAME=x86_64-gnu-llvm-16]
##[group]Clock drift check
  local time: Thu Dec 21 12:13:38 UTC 2023
  network time: Thu, 21 Dec 2023 12:13:38 GMT
  network time: Thu, 21 Dec 2023 12:13:38 GMT
##[endgroup]
sccache: Starting the server...
##[group]Configure the build
configure: processing command line
configure: 
configure: build.configure-args := ['--build=x86_64-unknown-linux-gnu', '--llvm-root=/usr/lib/llvm-16', '--enable-llvm-link-shared', '--set', 'rust.thin-lto-import-instr-limit=10', '--enable-verbose-configure', '--enable-sccache', '--disable-manage-submodules', '--enable-locked-deps', '--enable-cargo-native-static', '--set', 'rust.codegen-units-std=1', '--set', 'dist.compression-profile=balanced', '--dist-compression-formats=xz', '--disable-dist-src', '--release-channel=nightly', '--enable-debug-assertions', '--enable-overflow-checks', '--enable-llvm-assertions', '--set', 'rust.verify-llvm-ir', '--set', 'rust.codegen-backends=llvm,cranelift,gcc', '--set', 'llvm.static-libstdcpp', '--enable-missing-tools', '--enable-new-symbol-mangling']
configure: target.x86_64-unknown-linux-gnu.llvm-config := /usr/lib/llvm-16/bin/llvm-config
configure: llvm.link-shared     := True
configure: rust.thin-lto-import-instr-limit := 10
configure: rust.codegen-units-std := 1
---
diff of stderr:

1 error: unknown directive
-    |
- note: instantiated into assembly here
-   --> <inline asm>:1:1
-    |
- LL | .intel_syntax noprefix
- 
- 
+ .intel_syntax noprefix
9 error: unknown directive
-    |
- note: instantiated into assembly here
- note: instantiated into assembly here
-   --> <inline asm>:1:1
-    |
- LL | .intel_syntax noprefix
-    | ^
-    = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
- 
+ .intel_syntax noprefix
18 error: unknown directive
19    |
20 note: instantiated into assembly here

---
100 


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/asm/inline-syntax.arm/inline-syntax.arm.stderr
To only update this specific test, also pass `--test-args asm/inline-syntax.rs`


error in revision `arm`: 1 errors occurred comparing output.
status: exit status: 1
command: RUSTC_ICE="0" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/asm/inline-syntax.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "--sysroot" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2" "--cfg" "arm" "--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/x86_64-unknown-linux-gnu/test/ui/asm/inline-syntax.arm" "-A" "unused" "-A" "internal_features" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/asm/inline-syntax.arm/auxiliary" "--target" "armv7-unknown-linux-gnueabihf"
--- stderr -------------------------------
error: unknown directive
.intel_syntax noprefix
^
^
error: unknown directive
.intel_syntax noprefix
^
error: unknown directive
   |
note: instantiated into assembly here
  --> <inline asm>:1:1
   |
LL | .intel_syntax noprefix

error: unknown directive
##[error]  --> /checkout/tests/ui/asm/inline-syntax.rs:32:15
   |
   |
LL |         asm!(".intel_syntax noprefix", "nop");
   |
note: instantiated into assembly here
note: instantiated into assembly here
  --> <inline asm>:1:2
LL |     .intel_syntax noprefix
   |     ^

error: unknown directive
error: unknown directive
##[error]  --> /checkout/tests/ui/asm/inline-syntax.rs:35:15
   |
LL |         asm!(".intel_syntax aaa noprefix", "nop");
   |
note: instantiated into assembly here
note: instantiated into assembly here
  --> <inline asm>:1:2
   |
LL |     .intel_syntax aaa noprefix

error: unknown directive
##[error]  --> /checkout/tests/ui/asm/inline-syntax.rs:38:15
   |
   |
LL |         asm!(".att_syntax noprefix", "nop");
   |
note: instantiated into assembly here
note: instantiated into assembly here
  --> <inline asm>:1:2
   |
LL |     .att_syntax noprefix

error: unknown directive
##[error]  --> /checkout/tests/ui/asm/inline-syntax.rs:41:15
   |
   |
LL |         asm!(".att_syntax bbb noprefix", "nop");
   |
note: instantiated into assembly here
note: instantiated into assembly here
  --> <inline asm>:1:2
   |
LL |     .att_syntax bbb noprefix

error: unknown directive
##[error]  --> /checkout/tests/ui/asm/inline-syntax.rs:44:15
   |
   |
LL |         asm!(".intel_syntax noprefix; nop");
   |
note: instantiated into assembly here
note: instantiated into assembly here
  --> <inline asm>:1:2
   |
LL |     .intel_syntax noprefix; nop

error: unknown directive
##[error]  --> /checkout/tests/ui/asm/inline-syntax.rs:50:13
   |
   |
LL |             .intel_syntax noprefix
   |             ^
   |
note: instantiated into assembly here
  --> <inline asm>:2:13
LL |             .intel_syntax noprefix
   |             ^

error: aborting due to 7 previous errors

[nico]

I tried patching this in and I still see failures in this test building against LLVM head (but the error is smaller than without this):

 failures:
 
 ---- [ui] tests/ui/asm/inline-syntax.rs#arm stdout ----
 diff of stderr:
 
 13	   |
 14	LL | .intel_syntax noprefix
 15	   | ^
 -	   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 17	
 18	error: unknown directive
 -	   |
 -	note: instantiated into assembly here
 -	  --> <inline asm>:1:1
 -	   |
 -	LL | .intel_syntax noprefix
 -	   | ^
 -	
 -	error: unknown directive
 27	  --> $DIR/inline-syntax.rs:32:15
 28	   |
 29	LL |         asm!(".intel_syntax noprefix", "nop");
 
 95	LL |             .intel_syntax noprefix
 96	   |             ^
 97	
 -	error: aborting due to 9 previous errors
 +	error: aborting due to 8 previous errors
 99	
 100

Am I holding it wrong? Has something else changed upstream?

(From https://bugs.chromium.org/p/chromium/issues/detail?id=1513478#c2)

[nico]

Oh, we build a slightly older version of rust with this cherry-picked in, instead of using head rust. Maybe that's why?