DrSocalkwe3n/luajit
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Check for upvalue state transition in IR_UREFO.

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

27
src/lj_asm_x86.h
View File

@@ -1373,24 +1373,31 @@ static void asm_hrefk(ASMState *as, IRIns *ir)
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_rma(as, XO_MOV, dest|REX_GC64, v);
} else {
Reg uv = ra_scratch(as, RSET_GPR);
Reg func = ra_alloc1(as, ir->op1, RSET_GPR);
if (ir->o == IR_UREFC) {
if (ir->o == IR_UREFC)
emit_rmro(as, XO_LEA, dest|REX_GC64, uv, offsetof(GCupval, tv));
asm_guardcc(as, CC_NE);
emit_i8(as, 1);
emit_rmro(as, XO_ARITHib, XOg_CMP, uv, offsetof(GCupval, closed));
} else {
else
emit_rmro(as, XO_MOV, dest|REX_GC64, uv, offsetof(GCupval, v));
if (guarded) {
asm_guardcc(as, ir->o == IR_UREFC ? CC_E : CC_NE);
emit_i8(as, 0);
emit_rmro(as, XO_ARITHib, XOg_CMP, uv, 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, uv, o);
} else {
emit_rmro(as, XO_MOV, uv|REX_GC64, ra_alloc1(as, ir->op1, RSET_GPR),
(int32_t)offsetof(GCfuncL, uvptr) +
(int32_t)sizeof(MRef) * (int32_t)(ir->op2 >> 8));
}
emit_rmro(as, XO_MOV, uv|REX_GC64, func,
(int32_t)offsetof(GCfuncL, uvptr) +
(int32_t)sizeof(MRef) * (int32_t)(ir->op2 >> 8));
}
}