qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-10-02 04:18:33 -06:00
Code Releases Activity

runtime: remove handling of indirect key types in evacuate_fastX

Browse Source 
None of the mapfast key types are indirect.

Change-Id: I1fb2682257567ee69504082a6cdad63c99916671
Reviewed-on: https://go-review.googlesource.com/59133
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
This commit is contained in:
Josh Bleecher Snyder 2017-08-18 21:19:12 -07:00
parent db9f5917fc
commit 0480bfe57f
1 changed files with 6 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/runtime/hashmap_fast.go
View File

@ -818,15 +818,11 @@ func evacuate_fast32(t *maptype, h *hmap, oldbucket uintptr) {
if top < minTopHash {
throw("bad map state")
}
k2 := k
if t.indirectkey {
k2 = *((*unsafe.Pointer)(k2))
}
var useY uint8
if !h.sameSizeGrow() {
// Compute hash to make our evacuation decision (whether we need
// to send this key/value to bucket x or bucket y).
hash := t.key.alg.hash(k2, uintptr(h.hash0))
hash := t.key.alg.hash(k, uintptr(h.hash0))
if hash&newbit != 0 {
useY = 1
}
@ -842,11 +838,7 @@ func evacuate_fast32(t *maptype, h *hmap, oldbucket uintptr) {
dst.v = add(dst.k, bucketCnt*4)
}
dst.b.tophash[dst.i&(bucketCnt-1)] = top // mask dst.i as an optimization, to avoid a bounds check
if t.indirectkey {
*(*unsafe.Pointer)(dst.k) = k2 // copy pointer
} else {
typedmemmove(t.key, dst.k, k) // copy value
}
typedmemmove(t.key, dst.k, k) // copy value
if t.indirectvalue {
*(*unsafe.Pointer)(dst.v) = *(*unsafe.Pointer)(v)
} else {
@ -923,15 +915,11 @@ func evacuate_fast64(t *maptype, h *hmap, oldbucket uintptr) {
if top < minTopHash {
throw("bad map state")
}
k2 := k
if t.indirectkey {
k2 = *((*unsafe.Pointer)(k2))
}
var useY uint8
if !h.sameSizeGrow() {
// Compute hash to make our evacuation decision (whether we need
// to send this key/value to bucket x or bucket y).
hash := t.key.alg.hash(k2, uintptr(h.hash0))
hash := t.key.alg.hash(k, uintptr(h.hash0))
if hash&newbit != 0 {
useY = 1
}
@ -947,11 +935,7 @@ func evacuate_fast64(t *maptype, h *hmap, oldbucket uintptr) {
dst.v = add(dst.k, bucketCnt*8)
}
dst.b.tophash[dst.i&(bucketCnt-1)] = top // mask dst.i as an optimization, to avoid a bounds check
if t.indirectkey {
*(*unsafe.Pointer)(dst.k) = k2 // copy pointer
} else {
typedmemmove(t.key, dst.k, k) // copy value
}
typedmemmove(t.key, dst.k, k) // copy value
if t.indirectvalue {
*(*unsafe.Pointer)(dst.v) = *(*unsafe.Pointer)(v)
} else {
@ -1028,15 +1012,11 @@ func evacuate_faststr(t *maptype, h *hmap, oldbucket uintptr) {
if top < minTopHash {
throw("bad map state")
}
k2 := k
if t.indirectkey {
k2 = *((*unsafe.Pointer)(k2))
}
var useY uint8
if !h.sameSizeGrow() {
// Compute hash to make our evacuation decision (whether we need
// to send this key/value to bucket x or bucket y).
hash := t.key.alg.hash(k2, uintptr(h.hash0))
hash := t.key.alg.hash(k, uintptr(h.hash0))
if hash&newbit != 0 {
useY = 1
}
@ -1052,11 +1032,7 @@ func evacuate_faststr(t *maptype, h *hmap, oldbucket uintptr) {
dst.v = add(dst.k, bucketCnt*2*sys.PtrSize)
}
dst.b.tophash[dst.i&(bucketCnt-1)] = top // mask dst.i as an optimization, to avoid a bounds check
if t.indirectkey {
*(*unsafe.Pointer)(dst.k) = k2 // copy pointer
} else {
typedmemmove(t.key, dst.k, k) // copy value
}
typedmemmove(t.key, dst.k, k) // copy value
if t.indirectvalue {
*(*unsafe.Pointer)(dst.v) = *(*unsafe.Pointer)(v)
} else {