[clang] [clang][x86] Add constexpr support for BZHI intrinsics (PR #110508)

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git-clang-format --diff c0e97c4dfc936ed13ae9696f0615d7e648268bc9 0cb0f899c185bb729e1ee2f48d78d4ef81d0ace9 --extensions c,h,cpp -- clang/lib/AST/ExprConstant.cpp clang/lib/Headers/bmi2intrin.h clang/test/CodeGen/X86/bmi2-builtins.c
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Headers/bmi2intrin.h b/clang/lib/Headers/bmi2intrin.h
index 31d97e6271..77fb081029 100644
--- a/clang/lib/Headers/bmi2intrin.h
+++ b/clang/lib/Headers/bmi2intrin.h
@@ -44,8 +44,7 @@
 ///    The lower 8 bits specify the bit number of the lowest bit to zero.
 /// \returns The partially zeroed 32-bit value.
 static __inline__ unsigned int __DEFAULT_FN_ATTRS_CONSTEXPR
-_bzhi_u32(unsigned int __X, unsigned int __Y)
-{
+_bzhi_u32(unsigned int __X, unsigned int __Y) {
   return __builtin_ia32_bzhi_si(__X, __Y);
 }
 
@@ -160,8 +159,7 @@ _mulx_u32(unsigned int __X, unsigned int __Y, unsigned int *__P)
 ///    The lower 8 bits specify the bit number of the lowest bit to zero.
 /// \returns The partially zeroed 64-bit value.
 static __inline__ unsigned long long __DEFAULT_FN_ATTRS_CONSTEXPR
-_bzhi_u64(unsigned long long __X, unsigned long long __Y)
-{
+_bzhi_u64(unsigned long long __X, unsigned long long __Y) {
   return __builtin_ia32_bzhi_di(__X, __Y);
 }
 

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https://github.com/llvm/llvm-project/pull/110508