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better code generation for constant aggregates

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This commit is contained in:
Araq 2011-11-02 00:55:29 +01:00
commit 351e89e705
10 changed files with 79 additions and 32 deletions
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9
compiler/transf.nim
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@ -657,6 +657,12 @@ proc transformCall(c: PTransf, n: PNode): PTransNode =
else:
result = transformSons(c, n)
proc dontInlineConstant(orig, cnst: PNode): bool {.inline.} =
# symbols that expand to a complex constant (array, etc.) should not be
# inlined, unless it's the empty array:
result = orig.kind == nkSym and cnst.kind in {nkCurly, nkPar, nkBracket} and
cnst.len != 0
proc transform(c: PTransf, n: PNode): PTransNode =
case n.kind
of nkSym:
@ -723,8 +729,7 @@ proc transform(c: PTransf, n: PNode): PTransNode =
result = transformSons(c, n)
var cnst = getConstExpr(c.module, PNode(result))
# we inline constants if they are not complex constants:
if cnst != nil and (cnst.kind notin {nkCurly, nkPar, nkBracket} or
cnst.len == 0):
if cnst != nil and not dontInlineConstant(n, cnst):
result = PTransNode(cnst) # do not miss an optimization
proc processTransf(context: PPassContext, n: PNode): PNode =