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compiler: remove unused assignment flags (#9760)

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This commit is contained in:
Jacek Sieka
2018-11-21 04:04:45 -06:00
committed by Andreas Rumpf
parent 574cdfc156
commit 2b2fc5c7e9
2 changed files with 5 additions and 20 deletions
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21
compiler/ccgexprs.nim
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@@ -173,21 +173,6 @@ proc genRefAssign(p: BProc, dest, src: TLoc, flags: TAssignmentFlags) =
linefmt(p, cpsStmts, "$1 = $2;$n", rdLoc(dest), rdLoc(src))
elif dest.storage == OnHeap:
# location is on heap
# now the writer barrier is inlined for performance:
#
# if afSrcIsNotNil in flags:
# UseMagic(p.module, 'nimGCref')
# lineF(p, cpsStmts, 'nimGCref($1);$n', [rdLoc(src)])
# elif afSrcIsNil notin flags:
# UseMagic(p.module, 'nimGCref')
# lineF(p, cpsStmts, 'if ($1) nimGCref($1);$n', [rdLoc(src)])
# if afDestIsNotNil in flags:
# UseMagic(p.module, 'nimGCunref')
# lineF(p, cpsStmts, 'nimGCunref($1);$n', [rdLoc(dest)])
# elif afDestIsNil notin flags:
# UseMagic(p.module, 'nimGCunref')
# lineF(p, cpsStmts, 'if ($1) nimGCunref($1);$n', [rdLoc(dest)])
# lineF(p, cpsStmts, '$1 = $2;$n', [rdLoc(dest), rdLoc(src)])
if canFormAcycle(dest.t):
linefmt(p, cpsStmts, "#asgnRef((void**) $1, $2);$n",
addrLoc(p.config, dest), rdLoc(src))
@@ -1155,7 +1140,7 @@ proc genSeqElemAppend(p: BProc, e: PNode, d: var TLoc) =
getIntTemp(p, tmpL)
lineCg(p, cpsStmts, "$1 = $2->$3++;$n", tmpL.r, rdLoc(a), lenField(p))
dest.r = ropecg(p.module, "$1$3[$2]", rdLoc(a), tmpL.r, dataField(p))
genAssignment(p, dest, b, {needToCopy, afDestIsNil})
genAssignment(p, dest, b, {needToCopy})
gcUsage(p.config, e)
proc genReset(p: BProc, n: PNode) =
@@ -1394,7 +1379,7 @@ proc genArrToSeq(p: BProc, n: PNode, d: var TLoc) =
elem.storage = OnHeap # we know that sequences are on the heap
initLoc(arr, locExpr, lodeTyp elemType(skipTypes(n.sons[1].typ, abstractInst)), a.storage)
arr.r = ropecg(p.module, "$1[$2]", rdLoc(a), intLiteral(i))
genAssignment(p, elem, arr, {afDestIsNil, needToCopy})
genAssignment(p, elem, arr, {needToCopy})
else:
var i: TLoc
getTemp(p, getSysType(p.module.g.graph, unknownLineInfo(), tyInt), i)
@@ -1405,7 +1390,7 @@ proc genArrToSeq(p: BProc, n: PNode, d: var TLoc) =
elem.storage = OnHeap # we know that sequences are on the heap
initLoc(arr, locExpr, lodeTyp elemType(skipTypes(n.sons[1].typ, abstractInst)), a.storage)
arr.r = ropecg(p.module, "$1[$2]", rdLoc(a), rdLoc(i))
genAssignment(p, elem, arr, {afDestIsNil, needToCopy})
genAssignment(p, elem, arr, {needToCopy})
lineF(p, cpsStmts, "}$n", [])

4
compiler/cgen.nim
View File

@@ -294,7 +294,7 @@ proc genObjectInit(p: BProc, section: TCProcSection, t: PType, a: TLoc,
type
TAssignmentFlag = enum
needToCopy, afDestIsNil, afDestIsNotNil, afSrcIsNil, afSrcIsNotNil
needToCopy
TAssignmentFlags = set[TAssignmentFlag]
proc genRefAssign(p: BProc, dest, src: TLoc, flags: TAssignmentFlags)
@@ -313,7 +313,7 @@ proc resetLoc(p: BProc, loc: var TLoc) =
var nilLoc: TLoc
initLoc(nilLoc, locTemp, loc.lode, OnStack)
nilLoc.r = rope("NIM_NIL")
genRefAssign(p, loc, nilLoc, {afSrcIsNil})
genRefAssign(p, loc, nilLoc, {})
else:
linefmt(p, cpsStmts, "$1 = 0;$n", rdLoc(loc))
else: