[clang] [llvm] [WebAssembly] Add gc target feature to addBleedingEdgeFeatures (PR #151107)

LLVM Continuous Integration via cfe-commits cfe-commits at lists.llvm.org
Tue Jul 29 18:08:11 PDT 2025 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-gcc-ubuntu` running on `sie-linux-worker3` while building `clang,llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/21932

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'Clang :: Preprocessor/wasm-target-features.c' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm32-unknown-unknown -matomics    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=ATOMICS # RUN: at line 1
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm32-unknown-unknown -matomics
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=ATOMICS
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm64-unknown-unknown -matomics    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=ATOMICS # RUN: at line 4
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm64-unknown-unknown -matomics
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=ATOMICS
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm32-unknown-unknown -pthread    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=PTHREAD # RUN: at line 10
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm32-unknown-unknown -pthread
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=PTHREAD
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm64-unknown-unknown -pthread    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=PTHREAD # RUN: at line 13
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=PTHREAD
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm64-unknown-unknown -pthread
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm32-unknown-unknown -mbulk-memory    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=BULK-MEMORY # RUN: at line 19
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=BULK-MEMORY
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm32-unknown-unknown -mbulk-memory
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm64-unknown-unknown -mbulk-memory    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=BULK-MEMORY # RUN: at line 22
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=BULK-MEMORY
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm64-unknown-unknown -mbulk-memory
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm32-unknown-unknown -mexception-handling    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXCEPTION-HANDLING # RUN: at line 28
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm32-unknown-unknown -mexception-handling
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXCEPTION-HANDLING
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm64-unknown-unknown -mexception-handling    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXCEPTION-HANDLING # RUN: at line 31
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm64-unknown-unknown -mexception-handling
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXCEPTION-HANDLING
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm32-unknown-unknown -mextended-const    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXTENDED-CONST # RUN: at line 37
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm32-unknown-unknown -mextended-const
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXTENDED-CONST
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm64-unknown-unknown -mextended-const    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXTENDED-CONST # RUN: at line 40
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm64-unknown-unknown -mextended-const
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=EXTENDED-CONST
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm32-unknown-unknown -mfp16    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=FP16 # RUN: at line 46
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm32-unknown-unknown -mfp16
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=FP16
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm64-unknown-unknown -mfp16    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=FP16 # RUN: at line 49
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=FP16
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm64-unknown-unknown -mfp16
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - 2>&1      -target wasm32-unknown-unknown -mgc    | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=GC # RUN: at line 55
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -check-prefix=GC
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/clang -E -dM /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c -o - -target wasm32-unknown-unknown -mgc
/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/clang/test/Preprocessor/wasm-target-features.c:62:8: error: GC: expected string not found in input
// GC: #define __wasm_gc__ 1{{$}}
       ^
<stdin>:1:1: note: scanning from here
clang: error: unknown argument: '-mgc'
^
...

```

</details>

https://github.com/llvm/llvm-project/pull/151107

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