diff options
Diffstat (limited to 'src/runtime/runtime1.go')
| -rw-r--r-- | src/runtime/runtime1.go | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/src/runtime/runtime1.go b/src/runtime/runtime1.go index 3ec5c44ebd..43e4c14236 100644 --- a/src/runtime/runtime1.go +++ b/src/runtime/runtime1.go @@ -212,10 +212,6 @@ func check() { throw("bad unsafe.Sizeof y1") } - if timediv(12345*1000000000+54321, 1000000000, &e) != 12345 || e != 54321 { - throw("bad timediv") - } - var z uint32 z = 1 if !atomic.Cas(&z, 1, 2) { @@ -593,35 +589,6 @@ func setTraceback(level string) { atomic.Store(&traceback_cache, t) } -// Poor mans 64-bit division. -// This is a very special function, do not use it if you are not sure what you are doing. -// int64 division is lowered into _divv() call on 386, which does not fit into nosplit functions. -// Handles overflow in a time-specific manner. -// This keeps us within no-split stack limits on 32-bit processors. -// -//go:nosplit -func timediv(v int64, div int32, rem *int32) int32 { - res := int32(0) - for bit := 30; bit >= 0; bit-- { - if v >= int64(div)<<uint(bit) { - v = v - (int64(div) << uint(bit)) - // Before this for loop, res was 0, thus all these - // power of 2 increments are now just bitsets. - res |= 1 << uint(bit) - } - } - if v >= int64(div) { - if rem != nil { - *rem = 0 - } - return 0x7fffffff - } - if rem != nil { - *rem = int32(v) - } - return res -} - // Helpers for Go. Must be NOSPLIT, must only call NOSPLIT functions, and must not block. //go:nosplit |