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C codegen: support system.move and system.wasMoved

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This commit is contained in:
Andreas Rumpf 2018-09-23 16:22:31 +02:00
commit c38a608c90
2 changed files with 38 additions and 0 deletions
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19
compiler/ccgexprs.nim
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@ -1864,6 +1864,23 @@ proc binaryFloatArith(p: BProc, e: PNode, d: var TLoc, m: TMagic) =
else:
binaryArith(p, e, d, m)
proc skipAddr(n: PNode): PNode =
result = if n.kind in {nkAddr, nkHiddenAddr}: n[0] else: n
proc genWasMoved(p: BProc; n: PNode) =
var a: TLoc
initLocExpr(p, n[1].skipAddr, a)
resetLoc(p, a)
#linefmt(p, cpsStmts, "#nimZeroMem((void*)$1, sizeof($2));$n",
# addrLoc(p.config, a), getTypeDesc(p.module, a.t))
proc genMove(p: BProc; n: PNode; d: var TLoc) =
if d.k == locNone: getTemp(p, n.typ, d)
var a: TLoc
initLocExpr(p, n[1].skipAddr, a)
genAssignment(p, d, a, {})
resetLoc(p, a)
proc genMagicExpr(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
case op
of mOr, mAnd: genAndOr(p, e, d, op)
@ -1991,6 +2008,8 @@ proc genMagicExpr(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
initLocExpr(p, e.sons[2], b)
genDeepCopy(p, a, b)
of mDotDot, mEqCString: genCall(p, e, d)
of mWasMoved: genWasMoved(p, e)
of mMove: genMove(p, e, d)
else:
when defined(debugMagics):
echo p.prc.name.s, " ", p.prc.id, " ", p.prc.flags, " ", p.prc.ast[genericParamsPos].kind