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| author | Josh Bleecher Snyder <josharian@gmail.com> | 2017-06-07 11:35:17 -0700 |
|---|---|---|
| committer | Josh Bleecher Snyder <josharian@gmail.com> | 2017-08-14 00:51:14 +0000 |
| commit | aca92f352d6a5bc0b17cd39d3b1bbe23ae0bb5ac (patch) | |
| tree | 281c5a865726dddb09d27d8de6a16a73e95235f3 /src/runtime/hashmap.go | |
| parent | a6136ded32878f9225e26b03ce9d9e84b0198af8 (diff) | |
| download | go-aca92f352d6a5bc0b17cd39d3b1bbe23ae0bb5ac.tar.xz | |
runtime: CSE some function arguments in evacuate
Shrinks evacuate's machine code a little.
Change-Id: I08874c92abdc7e621bc0737e22f2a6be31542cab
Reviewed-on: https://go-review.googlesource.com/54652
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
Diffstat (limited to 'src/runtime/hashmap.go')
| -rw-r--r-- | src/runtime/hashmap.go | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/runtime/hashmap.go b/src/runtime/hashmap.go index e8e61a7fd1..c36ff470d6 100644 --- a/src/runtime/hashmap.go +++ b/src/runtime/hashmap.go @@ -1166,10 +1166,12 @@ func evacuate(t *maptype, h *hmap, oldbucket uintptr) { b = (*bmap)(add(h.oldbuckets, oldbucket*uintptr(t.bucketsize))) // Preserve b.tophash because the evacuation // state is maintained there. + ptr := add(unsafe.Pointer(b), dataOffset) + n := uintptr(t.bucketsize) - dataOffset if t.bucket.kind&kindNoPointers == 0 { - memclrHasPointers(add(unsafe.Pointer(b), dataOffset), uintptr(t.bucketsize)-dataOffset) + memclrHasPointers(ptr, n) } else { - memclrNoHeapPointers(add(unsafe.Pointer(b), dataOffset), uintptr(t.bucketsize)-dataOffset) + memclrNoHeapPointers(ptr, n) } } } |