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Fix small compiler bug (not freeing temp register).

This commit is contained in:
Calvin Rose 2019-09-15 13:27:49 -05:00
parent 8aba5e76ae
commit 97d874f16b
2 changed files with 3 additions and 1 deletions
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1
src/core/regalloc.c
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@ -144,6 +144,7 @@ void janetc_regalloc_free(JanetcRegisterAllocator *ra, int32_t reg) {
int32_t janetc_regalloc_temp(JanetcRegisterAllocator *ra, JanetcRegisterTemp nth) {
int32_t oldmax = ra->max;
if (ra->regtemps & (1 << nth)) {
printf("regtemp %d attempted\n", nth);
janet_exit("regtemp already allocated");
}
ra->regtemps |= 1 << nth;

3
src/core/specials.c
View File

@ -602,6 +602,7 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
int32_t tempself = janetc_regalloc_temp(&tempscope.ra, JANETC_REGTEMP_0);
janetc_emit(c, JOP_LOAD_SELF | (tempself << 8));
janetc_emit(c, JOP_TAILCALL | (tempself << 8));
janetc_regalloc_freetemp(&c->scope->ra, tempself, JANETC_REGTEMP_0);
/* Compile function */
JanetFuncDef *def = janetc_pop_funcdef(c);
def->name = janet_cstring("_while");
@ -610,7 +611,7 @@ static JanetSlot janetc_while(JanetFopts opts, int32_t argn, const Janet *argv)
int32_t cloreg = janetc_regalloc_temp(&c->scope->ra, JANETC_REGTEMP_0);
janetc_emit(c, JOP_CLOSURE | (cloreg << 8) | (defindex << 16));
janetc_emit(c, JOP_CALL | (cloreg << 8) | (cloreg << 16));
janetc_regalloc_free(&c->scope->ra, cloreg);
janetc_regalloc_freetemp(&c->scope->ra, cloreg, JANETC_REGTEMP_0);
c->scope->flags |= JANET_SCOPE_CLOSURE;
return janetc_cslot(janet_wrap_nil());
}