diff options
Diffstat (limited to 'src/cmd/compile/internal/ssa/rewrite.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/rewrite.go | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/src/cmd/compile/internal/ssa/rewrite.go b/src/cmd/compile/internal/ssa/rewrite.go index 9b3c83d1cf..ab6d020942 100644 --- a/src/cmd/compile/internal/ssa/rewrite.go +++ b/src/cmd/compile/internal/ssa/rewrite.go @@ -449,10 +449,7 @@ func log2uint32(n int64) int64 { return int64(bits.Len32(uint32(n))) - 1 } -// isPowerOfTwo reports whether n is a power of 2. -func isPowerOfTwo(n int64) bool { - return n > 0 && n&(n-1) == 0 -} +// isPowerOfTwo functions report whether n is a power of 2. func isPowerOfTwo8(n int8) bool { return n > 0 && n&(n-1) == 0 } @@ -1555,7 +1552,7 @@ func (bfc arm64BitField) getARM64BFwidth() int64 { // checks if mask >> rshift applied at lsb is a valid arm64 bitfield op mask. func isARM64BFMask(lsb, mask, rshift int64) bool { shiftedMask := int64(uint64(mask) >> uint64(rshift)) - return shiftedMask != 0 && isPowerOfTwo(shiftedMask+1) && nto(shiftedMask)+lsb < 64 + return shiftedMask != 0 && isPowerOfTwo64(shiftedMask+1) && nto(shiftedMask)+lsb < 64 } // returns the bitfield width of mask >> rshift for arm64 bitfield ops |