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Check for upvalue state transition in IR_UREFO.

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Thanks to Peter Cawley. #1085
This commit is contained in:
Mike Pall
2023-11-05 16:34:46 +01:00
parent 0afa1676b2
commit 07b3cd3cf9
9 changed files with 150 additions and 67 deletions
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27
src/lj_asm_mips.h
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@@ -1207,22 +1207,29 @@ nolo:
static void asm_uref(ASMState *as, IRIns *ir)
{
Reg dest = ra_dest(as, ir, RSET_GPR);
if (irref_isk(ir->op1)) {
int guarded = (irt_t(ir->t) & (IRT_GUARD|IRT_TYPE)) == (IRT_GUARD|IRT_PGC);
if (irref_isk(ir->op1) && !guarded) {
GCfunc *fn = ir_kfunc(IR(ir->op1));
MRef *v = &gcref(fn->l.uvptr[(ir->op2 >> 8)])->uv.v;
emit_lsptr(as, MIPSI_AL, dest, v, RSET_GPR);
} else {
Reg uv = ra_scratch(as, RSET_GPR);
Reg func = ra_alloc1(as, ir->op1, RSET_GPR);
if (ir->o == IR_UREFC) {
asm_guard(as, MIPSI_BEQ, RID_TMP, RID_ZERO);
emit_tsi(as, MIPSI_AADDIU, dest, uv, (int32_t)offsetof(GCupval, tv));
emit_tsi(as, MIPSI_LBU, RID_TMP, uv, (int32_t)offsetof(GCupval, closed));
if (guarded)
asm_guard(as, ir->o == IR_UREFC ? MIPSI_BEQ : MIPSI_BNE, RID_TMP, RID_ZERO);
if (ir->o == IR_UREFC)
emit_tsi(as, MIPSI_AADDIU, dest, dest, (int32_t)offsetof(GCupval, tv));
else
emit_tsi(as, MIPSI_AL, dest, dest, (int32_t)offsetof(GCupval, v));
if (guarded)
emit_tsi(as, MIPSI_LBU, RID_TMP, dest, (int32_t)offsetof(GCupval, closed));
if (irref_isk(ir->op1)) {
GCfunc *fn = ir_kfunc(IR(ir->op1));
GCobj *o = gcref(fn->l.uvptr[(ir->op2 >> 8)]);
emit_loada(as, dest, o);
} else {
emit_tsi(as, MIPSI_AL, dest, uv, (int32_t)offsetof(GCupval, v));
emit_tsi(as, MIPSI_AL, dest, ra_alloc1(as, ir->op1, RSET_GPR),
(int32_t)offsetof(GCfuncL, uvptr) +
(int32_t)sizeof(MRef) * (int32_t)(ir->op2 >> 8));
}
emit_tsi(as, MIPSI_AL, uv, func, (int32_t)offsetof(GCfuncL, uvptr) +
(int32_t)sizeof(MRef) * (int32_t)(ir->op2 >> 8));
}
}