Priyanshu3820 wrote:
Currently, we hit the error-
`In file included from
/home/priyanshu/llvm/llvm-project/build/lib/clang/23/include/x86intrin.h:13:
/home/priyanshu/llvm/llvm-project/build/lib/clang/23/include/ia32intrin.h:487:10:
error:
ClangIR code gen Not Yet Implemented: unimplemented builtin call:
__builtin_ia32_rdpmc
487 | return __builtin_ia32_rdpmc(__A);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
error: ClangIR code gen Not Yet Implemented: unsupported type for undef rvalue
2 errors generated.`
Which is expected since `emitX86BuiltinExpr` hits the default case in
`CIRGenBuiltinX86.cpp` that returns `std::nullopt. But it is generating the
correct IR in compiler explorer, see- https://godbolt.org/
https://github.com/llvm/llvm-project/pull/177639
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