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| author | Reid Kleckner <reid@kleckner.net> | 2013-08-06 19:45:27 +0000 |
|---|---|---|
| committer | Reid Kleckner <reid@kleckner.net> | 2013-08-06 19:45:27 +0000 |
| commit | ae8e3cfbca31cddac5a891b1d5606399dd4fefe0 (patch) | |
| tree | 4037972733d500fdd1c908a24f98584420807972 | |
| parent | f40d578d7e4f29fcc72fc39882014e03cd3f5bd0 (diff) | |
| download | llvm-ae8e3cfbca31cddac5a891b1d5606399dd4fefe0.tar.gz llvm-ae8e3cfbca31cddac5a891b1d5606399dd4fefe0.tar.bz2 llvm-ae8e3cfbca31cddac5a891b1d5606399dd4fefe0.tar.xz | |
Use gnu style builtins in MathExtras.h with clang on Windows
Clang does not provide BitScan* intrinsic implementations yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187813 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/llvm/Support/MathExtras.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h index 7742e32737..00c6ad70d4 100644 --- a/include/llvm/Support/MathExtras.h +++ b/include/llvm/Support/MathExtras.h @@ -80,7 +80,7 @@ inline std::size_t countTrailingZeros<uint32_t>(uint32_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 32; -#if __GNUC__ >= 4 +#if __has_builtin(__builtin_ctz) || __GNUC_PREREQ(4, 0) return __builtin_ctz(Val); #elif _MSC_VER unsigned long Index; @@ -95,7 +95,7 @@ inline std::size_t countTrailingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 64; -#if __GNUC__ >= 4 +#if __has_builtin(__builtin_ctzll) || __GNUC_PREREQ(4, 0) return __builtin_ctzll(Val); #elif _MSC_VER unsigned long Index; @@ -146,7 +146,7 @@ inline std::size_t countLeadingZeros<uint32_t>(uint32_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 32; -#if __GNUC__ >= 4 +#if __has_builtin(__builtin_clz) || __GNUC_PREREQ(4, 0) return __builtin_clz(Val); #elif _MSC_VER unsigned long Index; @@ -161,7 +161,7 @@ inline std::size_t countLeadingZeros<uint64_t>(uint64_t Val, ZeroBehavior ZB) { if (ZB != ZB_Undefined && Val == 0) return 64; -#if __GNUC__ >= 4 +#if __has_builtin(__builtin_clzll) || __GNUC_PREREQ(4, 0) return __builtin_clzll(Val); #elif _MSC_VER unsigned long Index; |