diff options
Diffstat (limited to 'src/cmd/5c/reg.c')
| -rw-r--r-- | src/cmd/5c/reg.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/src/cmd/5c/reg.c b/src/cmd/5c/reg.c index b9ac21abd..9024d5f49 100644 --- a/src/cmd/5c/reg.c +++ b/src/cmd/5c/reg.c @@ -204,6 +204,16 @@ regopt(Prog *p) break; } + /* the mod/div runtime routines smash R12 */ + switch(p->as) { + case AMOD: + case AMODU: + case ADIV: + case ADIVU: + regbits |= RtoB(12); + break; + } + if(p->as == AMOVM) { if(p->from.type == D_CONST) z = p->from.offset; @@ -396,7 +406,7 @@ loop2: rgp->cost = change; nregion++; if(nregion >= NRGN) { - warn(Z, "too many regions"); + fatal(Z, "too many regions"); goto brk; } rgp++; @@ -632,11 +642,8 @@ mkvar(Addr *a, int docon) if(s) if(s->name[0] == '.') goto none; - if(nvar >= NVAR) { - if(debug['w'] > 1 && s) - warn(Z, "variable not optimized: %s", s->name); - goto none; - } + if(nvar >= NVAR) + fatal(Z, "variable not optimized: %s", s->name); i = nvar; nvar++; v = &var[i]; |