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Fix use-def analysis for BC_VARG.

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Reported by Ryan Lucia.
This commit is contained in:
Mike Pall 2021-05-24 22:25:26 +02:00
parent 44684fa71d
commit 2801500a26
1 changed files with 3 additions and 1 deletions
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4
src/lj_snap.c
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@ -238,7 +238,7 @@ static BCReg snap_usedef(jit_State *J, uint8_t *udf,
if (!(op == BC_ISTC || op == BC_ISFC)) DEF_SLOT(bc_a(ins)); if (!(op == BC_ISTC || op == BC_ISFC)) DEF_SLOT(bc_a(ins));
break; break;
case BCMbase: case BCMbase:
if (op >= BC_CALLM && op <= BC_VARG) { if (op >= BC_CALLM && op <= BC_ITERN) {
BCReg top = (op == BC_CALLM || op == BC_CALLMT || bc_c(ins) == 0) ? BCReg top = (op == BC_CALLM || op == BC_CALLMT || bc_c(ins) == 0) ?
maxslot : (bc_a(ins) + bc_c(ins)); maxslot : (bc_a(ins) + bc_c(ins));
s = bc_a(ins) - ((op == BC_ITERC || op == BC_ITERN) ? 3 : 0); s = bc_a(ins) - ((op == BC_ITERC || op == BC_ITERN) ? 3 : 0);
@ -248,6 +248,8 @@ static BCReg snap_usedef(jit_State *J, uint8_t *udf,
for (s = 0; s < bc_a(ins); s++) DEF_SLOT(s); for (s = 0; s < bc_a(ins); s++) DEF_SLOT(s);
return 0; return 0;
} }
} else if (op == BC_VARG) {
return maxslot; /* NYI: punt. */
} else if (op == BC_KNIL) { } else if (op == BC_KNIL) {
for (s = bc_a(ins); s <= bc_d(ins); s++) DEF_SLOT(s); for (s = bc_a(ins); s <= bc_d(ins); s++) DEF_SLOT(s);
} else if (op == BC_TSETM) { } else if (op == BC_TSETM) {