maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[NFC][sanitizer] constexpr a few functions

This commit is contained in:
Vitaly Buka 2021-10-24 16:21:28 -07:00
parent cfb72fd3a0
commit 5bf24f0581
1 changed files with 10 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
compiler-rt/lib/sanitizer_common/sanitizer_common.h
View File

@ -385,9 +385,9 @@ unsigned char _BitScanReverse64(unsigned long *index, unsigned __int64 mask);
}
#endif
inline uptr MostSignificantSetBitIndex(uptr x) {
inline constexpr uptr MostSignificantSetBitIndex(uptr x) {
CHECK_NE(x, 0U);
unsigned long up;
unsigned long up = 0;
#if !SANITIZER_WINDOWS || defined(__clang__) || defined(__GNUC__)
# ifdef _WIN64
up = SANITIZER_WORDSIZE - 1 - __builtin_clzll(x);
@ -402,9 +402,9 @@ inline uptr MostSignificantSetBitIndex(uptr x) {
return up;
}
inline uptr LeastSignificantSetBitIndex(uptr x) {
inline constexpr uptr LeastSignificantSetBitIndex(uptr x) {
CHECK_NE(x, 0U);
unsigned long up;
unsigned long up = 0;
#if !SANITIZER_WINDOWS || defined(__clang__) || defined(__GNUC__)
# ifdef _WIN64
up = __builtin_ctzll(x);
@ -419,11 +419,9 @@ inline uptr LeastSignificantSetBitIndex(uptr x) {
return up;
}
inline bool IsPowerOfTwo(uptr x) {
return (x & (x - 1)) == 0;
}
inline constexpr bool IsPowerOfTwo(uptr x) { return (x & (x - 1)) == 0; }
inline uptr RoundUpToPowerOfTwo(uptr size) {
inline constexpr uptr RoundUpToPowerOfTwo(uptr size) {
CHECK(size);
if (IsPowerOfTwo(size)) return size;
@ -433,20 +431,20 @@ inline uptr RoundUpToPowerOfTwo(uptr size) {
return 1ULL << (up + 1);
}
inline uptr RoundUpTo(uptr size, uptr boundary) {
inline constexpr uptr RoundUpTo(uptr size, uptr boundary) {
RAW_CHECK(IsPowerOfTwo(boundary));
return (size + boundary - 1) & ~(boundary - 1);
}
inline uptr RoundDownTo(uptr x, uptr boundary) {
inline constexpr uptr RoundDownTo(uptr x, uptr boundary) {
return x & ~(boundary - 1);
}
inline bool IsAligned(uptr a, uptr alignment) {
inline constexpr bool IsAligned(uptr a, uptr alignment) {
return (a & (alignment - 1)) == 0;
}
inline uptr Log2(uptr x) {
inline constexpr uptr Log2(uptr x) {
CHECK(IsPowerOfTwo(x));
return LeastSignificantSetBitIndex(x);
}