[clang] [RISCV][FMV] Support target_version (PR #99040)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux-bootstrap-ubsan` running on `sanitizer-buildbot4` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/25/builds/3046

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

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 86069 tests, 88 workers --
Testing:  0.
FAIL: Clang :: CodeGen/attr-target-version-riscv-invalid.c (6616 of 86069)
******************** TEST 'Clang :: CodeGen/attr-target-version-riscv-invalid.c' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: not /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/lib/clang/20/include -nostdsysteminc -triple riscv64 -target-feature +i -emit-llvm -o - /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c 2>&1 | /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c --check-prefix=CHECK-UNSUPPORT-OS
+ not /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/lib/clang/20/include -nostdsysteminc -triple riscv64 -target-feature +i -emit-llvm -o - /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c
+ /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c --check-prefix=CHECK-UNSUPPORT-OS
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:3:24: error: CHECK-UNSUPPORT-OS: expected string not found in input
// CHECK-UNSUPPORT-OS: error: function multiversioning is currently only supported on Linux
                       ^
<stdin>:1:1: note: scanning from here
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:8:48: error: function multiversioning doesn't support feature '|'
^
<stdin>:1:128: note: possible intended match here
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:8:48: error: function multiversioning doesn't support feature '|'
                                                                                                                               ^

Input file: <stdin>
Check file: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c

-dump-input=help explains the following input dump.

Input was:
<<<<<<
           1: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:8:48: error: function multiversioning doesn't support feature '|' 
check:3'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
check:3'1                                                                                                                                    ?                                                            possible intended match
           2:  8 | __attribute__((target_version("arch=+c"))) int foo(void) { 
check:3'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           3:  | ^ 
check:3'0     ~~~~~
           4: 1 error generated. 
check:3'0     ~~~~~~~~~~~~~~~~~~~
>>>>>>

--

Step 10 (stage2/ubsan check) failure: stage2/ubsan check (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 86069 tests, 88 workers --
Testing:  0.
FAIL: Clang :: CodeGen/attr-target-version-riscv-invalid.c (6616 of 86069)
******************** TEST 'Clang :: CodeGen/attr-target-version-riscv-invalid.c' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: not /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/lib/clang/20/include -nostdsysteminc -triple riscv64 -target-feature +i -emit-llvm -o - /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c 2>&1 | /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c --check-prefix=CHECK-UNSUPPORT-OS
+ not /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/clang -cc1 -internal-isystem /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/lib/clang/20/include -nostdsysteminc -triple riscv64 -target-feature +i -emit-llvm -o - /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c
+ /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c --check-prefix=CHECK-UNSUPPORT-OS
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:3:24: error: CHECK-UNSUPPORT-OS: expected string not found in input
// CHECK-UNSUPPORT-OS: error: function multiversioning is currently only supported on Linux
                       ^
<stdin>:1:1: note: scanning from here
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:8:48: error: function multiversioning doesn't support feature '|'
^
<stdin>:1:128: note: possible intended match here
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:8:48: error: function multiversioning doesn't support feature '|'
                                                                                                                               ^

Input file: <stdin>
Check file: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c

-dump-input=help explains the following input dump.

Input was:
<<<<<<
           1: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/clang/test/CodeGen/attr-target-version-riscv-invalid.c:8:48: error: function multiversioning doesn't support feature '|' 
check:3'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
check:3'1                                                                                                                                    ?                                                            possible intended match
           2:  8 | __attribute__((target_version("arch=+c"))) int foo(void) { 
check:3'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           3:  | ^ 
check:3'0     ~~~~~
           4: 1 error generated. 
check:3'0     ~~~~~~~~~~~~~~~~~~~
>>>>>>

--


```

</details>

https://github.com/llvm/llvm-project/pull/99040