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cmd/compile: add clear(x) builtin

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To clear map, and zero content of slice.

Updates #56351

Change-Id: I5f81dfbc465500f5acadaf2c6beb9b5f0d2c4045
Reviewed-on: https://go-review.googlesource.com/c/go/+/453395
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
This commit is contained in:
Cuong Manh Le 2022-11-25 16:11:45 +07:00 • committed by Gopher Robot
parent bb4ea80bef
commit b89a840d65
17 changed files with 256 additions and 142 deletions
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2
src/cmd/compile/internal/ir/expr.go
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@ -747,7 +747,7 @@ func (n *UnaryExpr) SetOp(op Op) {
default:
panic(n.no("SetOp " + op.String()))
case OBITNOT, ONEG, ONOT, OPLUS, ORECV,
OALIGNOF, OCAP, OCLOSE, OIMAG, OLEN, ONEW,
OALIGNOF, OCAP, OCLEAR, OCLOSE, OIMAG, OLEN, ONEW,
OOFFSETOF, OPANIC, OREAL, OSIZEOF,
OCHECKNIL, OCFUNC, OIDATA, OITAB, OSPTR,
OUNSAFESTRINGDATA, OUNSAFESLICEDATA: