[clang] [RISCV] Verify vfwmaccbf16 and vfncvtbf16 FRM argument in SemaRISCV::CheckBuiltinFunctionCall. (PR #155710)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-armv8-quick` running on `linaro-clang-armv8-quick` while building `clang` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/154/builds/20856

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

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'Clang :: CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/home/tcwg-buildbot/worker/clang-armv8-quick/stage1/bin/clang -cc1 -internal-isystem /home/tcwg-buildbot/worker/clang-armv8-quick/stage1/lib/clang/22/include -nostdsysteminc -triple riscv64 -target-feature +f -target-feature +d    -target-feature +v -target-feature +zvfbfmin    -fsyntax-only -verify /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c # RUN: at line 2
+ /home/tcwg-buildbot/worker/clang-armv8-quick/stage1/bin/clang -cc1 -internal-isystem /home/tcwg-buildbot/worker/clang-armv8-quick/stage1/lib/clang/22/include -nostdsysteminc -triple riscv64 -target-feature +f -target-feature +d -target-feature +v -target-feature +zvfbfmin -fsyntax-only -verify /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c
error: 'expected-error' diagnostics expected but not seen: 
  File /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c Line 10 (directive at /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c:9): argument value 5 is outside the valid range [0, 4]
  File /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c Line 15 (directive at /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c:14): argument value 5 is outside the valid range [0, 4]
  File /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c Line 20 (directive at /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c:19): argument value 5 is outside the valid range [0, 4]
  File /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c Line 25 (directive at /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c:24): argument value 5 is outside the valid range [0, 4]
  File /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c Line 30 (directive at /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c:29): argument value 5 is outside the valid range [0, 4]
error: 'expected-error' diagnostics seen but not expected: 
  File /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/vfncvtbf16-out-of-range.c Line 6: 'riscv_vector.h' file not found
6 errors generated.

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/155710