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Optimize BC_VARG: use RC for numparams.

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Mike Pall
2010-09-10 11:34:29 +02:00
parent 96957a4551
commit 6fd315581c
6 changed files with 333 additions and 339 deletions
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7
src/buildvm_x86.dasc
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@@ -4442,13 +4442,10 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop, int cmov, int sse)
break;
case BC_VARG:
| ins_AB_ // RA = base, RB = nresults+1, (RC = 1)
| mov LFUNC:RC, [BASE-8]
| lea RA, [BASE+RA*8]
| mov RC, LFUNC:RC->pc
| movzx RC, byte [RC+PC2PROTO(numparams)]
| ins_ABC // RA = base, RB = nresults+1, RC = numparams
| mov TMP1, KBASE // Need one more free register.
| lea KBASE, [BASE+RC*8+(8+FRAME_VARG)]
| lea RA, [BASE+RA*8]
| sub KBASE, [BASE-4]
| // Note: KBASE may now be even _above_ BASE if nargs was < numparams.
| test RB, RB