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cmd/compile/internal/gc: simplify x = x <op> y to x <op>= y

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Change-Id: I5afba2c10372252be4b65dae7a95461722de904f
Reviewed-on: https://go-review.googlesource.com/135835
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Iskander Sharipov 2018-09-18 01:04:41 +03:00 committed by Robert Griesemer
parent d17ac29158
commit 713edf8b31
2 changed files with 3 additions and 3 deletions
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4
src/cmd/compile/internal/gc/esc.go
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@ -1419,7 +1419,7 @@ func describeEscape(em uint16) string {
} }
s += "contentToHeap" s += "contentToHeap"
} }
for em >>= EscReturnBits; em != 0; em = em >> bitsPerOutputInTag { for em >>= EscReturnBits; em != 0; em >>= bitsPerOutputInTag {
// See encoding description above // See encoding description above
if s != "" { if s != "" {
s += " " s += " "
@ -1469,7 +1469,7 @@ func (e *EscState) escassignfromtag(note string, dsts Nodes, src, call *Node) ui
em0 := em em0 := em
dstsi := 0 dstsi := 0
for em >>= EscReturnBits; em != 0 && dstsi < dsts.Len(); em = em >> bitsPerOutputInTag { for em >>= EscReturnBits; em != 0 && dstsi < dsts.Len(); em >>= bitsPerOutputInTag {
// Prefer the lowest-level path to the reference (for escape purposes). // Prefer the lowest-level path to the reference (for escape purposes).
// Two-bit encoding (for example. 1, 3, and 4 bits are other options) // Two-bit encoding (for example. 1, 3, and 4 bits are other options)
// 01 = 0-level // 01 = 0-level

2
src/cmd/compile/internal/gc/walk.go
View File

@ -1312,7 +1312,7 @@ opswitch:
b = conv(b, convType) b = conv(b, convType)
b = nod(OLSH, b, nodintconst(int64(8*offset))) b = nod(OLSH, b, nodintconst(int64(8*offset)))
ncsubstr = nod(OOR, ncsubstr, b) ncsubstr = nod(OOR, ncsubstr, b)
csubstr = csubstr | int64(s[i+offset])<<uint8(8*offset) csubstr |= int64(s[i+offset]) << uint8(8*offset)
} }
csubstrPart := nodintconst(csubstr) csubstrPart := nodintconst(csubstr)
// Compare "step" bytes as once // Compare "step" bytes as once