[clang] [CIR][X86] Implement convert_half builtins (PR #171615)

[Priyanshu Kumar via cfe-commits]

Priyanshu3820 wrote:

@andykaylor, the CI checks are failing and the build log is saying this-

`/home/gha/actions-runner/_work/llvm-project/llvm-project/clang/lib/CIR/CodeGen/CIRGenStmt.cpp:117:11: error: enumeration value 'DeferStmtClass' not handled in switch [-Werror,-Wswitch]
  117 |   switch (s->getStmtClass()) {
      |           ^~~~~~~~~~~~~~~~~
1 error generated.
ninja: build stopped: cannot make progress due to previous errors.`

Neither did I edit this file nor does it contain `DeferStmtClass` in my local build. I rebased but still it's not there. I don't understand why is it happening.

https://github.com/llvm/llvm-project/pull/171615