diff options
| -rw-r--r-- | clang/lib/Headers/lzcntintrin.h | 12 | ||||
| -rw-r--r-- | clang/test/CodeGen/lzcnt-builtins.c | 12 |
2 files changed, 24 insertions, 0 deletions
diff --git a/clang/lib/Headers/lzcntintrin.h b/clang/lib/Headers/lzcntintrin.h index 5bb74355047..35d6659d245 100644 --- a/clang/lib/Headers/lzcntintrin.h +++ b/clang/lib/Headers/lzcntintrin.h @@ -44,12 +44,24 @@ __lzcnt32(unsigned int __X) return __X ? __builtin_clz(__X) : 32; } +static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__)) +_lzcnt_u32(unsigned int __X) +{ + return __X ? __builtin_clz(__X) : 32; +} + #ifdef __x86_64__ static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) __lzcnt64(unsigned long long __X) { return __X ? __builtin_clzll(__X) : 64; } + +static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) +_lzcnt_u64(unsigned long long __X) +{ + return __X ? __builtin_clzll(__X) : 64; +} #endif #endif /* __LZCNTINTRIN_H */ diff --git a/clang/test/CodeGen/lzcnt-builtins.c b/clang/test/CodeGen/lzcnt-builtins.c index a43c4eede45..a083de9d35f 100644 --- a/clang/test/CodeGen/lzcnt-builtins.c +++ b/clang/test/CodeGen/lzcnt-builtins.c @@ -22,3 +22,15 @@ unsigned long long test__lzcnt64(unsigned long long __X) // CHECK: @llvm.ctlz.i64 return __lzcnt64(__X); } + +unsigned int test_lzcnt_u32(unsigned int __X) +{ + // CHECK: @llvm.ctlz.i32 + return _lzcnt_u32(__X); +} + +unsigned long long test__lzcnt_u64(unsigned long long __X) +{ + // CHECK: @llvm.ctlz.i64 + return _lzcnt_u64(__X); +} |
