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Avoid unnecessary vararg loads.

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Mike Pall 2010-09-14 16:48:25 +02:00
parent 5b740046f8
commit b69c02eb68
1 changed files with 2 additions and 1 deletions
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3
src/lj_record.c
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@ -1986,6 +1986,7 @@ static void rec_varg(jit_State *J, BCReg dst, ptrdiff_t nresults)
if (nresults >= 0) { /* Known fixed number of results. */ if (nresults >= 0) { /* Known fixed number of results. */
ptrdiff_t i; ptrdiff_t i;
if (nvararg > 0) { if (nvararg > 0) {
ptrdiff_t nload = nvararg >= nresults ? nresults : nvararg;
TRef vbase; TRef vbase;
if (nvararg >= nresults) if (nvararg >= nresults)
emitir(IRTGI(IR_GE), fr, lj_ir_kint(J, frofs+8*(int32_t)nresults)); emitir(IRTGI(IR_GE), fr, lj_ir_kint(J, frofs+8*(int32_t)nresults));
@ -1993,7 +1994,7 @@ static void rec_varg(jit_State *J, BCReg dst, ptrdiff_t nresults)
emitir(IRTGI(IR_EQ), fr, lj_ir_kint(J, frame_ftsz(J->L->base-1))); emitir(IRTGI(IR_EQ), fr, lj_ir_kint(J, frame_ftsz(J->L->base-1)));
vbase = emitir(IRTI(IR_SUB), REF_BASE, fr); vbase = emitir(IRTI(IR_SUB), REF_BASE, fr);
vbase = emitir(IRT(IR_ADD, IRT_PTR), vbase, lj_ir_kint(J, frofs-8)); vbase = emitir(IRT(IR_ADD, IRT_PTR), vbase, lj_ir_kint(J, frofs-8));
for (i = 0; i < nvararg; i++) { for (i = 0; i < nload; i++) {
IRType t = itype2irt(&J->L->base[i-1-nvararg]); IRType t = itype2irt(&J->L->base[i-1-nvararg]);
TRef aref = emitir(IRT(IR_AREF, IRT_PTR), TRef aref = emitir(IRT(IR_AREF, IRT_PTR),
vbase, lj_ir_kint(J, (int32_t)i)); vbase, lj_ir_kint(J, (int32_t)i));