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optimized getCSC

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This commit is contained in:
Miodrag Milanovic 2024-11-28 09:01:45 +01:00
parent ea478eec2c
commit d2d39a606f
1 changed files with 7 additions and 26 deletions
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33
himbaechel/uarch/ng-ultra/pack.cc
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@ -2379,32 +2379,13 @@ void NgUltraImpl::postPlace()
BelId NgUltraPacker::getCSC(Loc l, int row)
{
BelId bel = ctx->getBelByLocation(Loc(l.x+1,l.y+2,0));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==1)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+1,l.y+2,15));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==2)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+1,l.y+2,16));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==3)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+1,l.y+2,31));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==4)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+2,l.y+3,0));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==1)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+2,l.y+3,15));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==2)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+2,l.y+3,16));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==3)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+2,l.y+3,31));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==4)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+3,l.y+2,0));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==1)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+3,l.y+2,15));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==2)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+3,l.y+2,16));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==3)) return bel;
bel = ctx->getBelByLocation(Loc(l.x+3,l.y+2,31));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==4)) return bel;
const int z_loc[] = { 0, 15, 16, 31 };
for(int j=0;j<3;j++) {
for(int i=0;i<4;i++) {
BelId bel = ctx->getBelByLocation(Loc(l.x+j+1,l.y+j%2+2,z_loc[i]));
if (!ctx->getBoundBelCell(bel) && (row==0 || row==(i+1))) return bel;
}
}
return BelId();
}