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my assumptions in dopm() were wrong

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revert commit d0e9e3ada106dfe8dcda7a0099b341000f00afb2.
This commit is contained in:
Quentin Carbonneaux 2015-08-22 20:15:47 -04:00
parent 390c5addd6
commit 2db68eed12
1 changed files with 13 additions and 5 deletions
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18
lisc/rega.c
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@ -212,8 +212,8 @@ static Ins *
dopm(Blk *b, Ins *i, RMap *m) dopm(Blk *b, Ins *i, RMap *m)
{ {
RMap m0; RMap m0;
int n, r, r1, t; int n, r, r1, t, nins;
Ins *i1, *ip; Ins *i1, *ib, *ip, *ir;
m0 = *m; m0 = *m;
i1 = i+1; i1 = i+1;
@ -251,14 +251,22 @@ dopm(Blk *b, Ins *i, RMap *m)
r = RBASE(ip->arg[0].val); r = RBASE(ip->arg[0].val);
if (rfind(m, r) == -1) if (rfind(m, r) == -1)
radd(m, r, r); radd(m, r, r);
*ip = (Ins){ONop, R, {R, R}};
} }
pmgen(); pmgen();
#ifdef TEST_PMOV #ifdef TEST_PMOV
return 0; return 0;
#endif #endif
assert(curi-insb <= i1-i); nins = curi-insb;
return memcpy(i, insb, (curi-insb) * sizeof(Ins)); ib = alloc((b->nins + nins - (i1-i)) * sizeof(Ins));
memcpy(ip = ib, b->ins, (i - b->ins) * sizeof(Ins));
ip += i - b->ins;
memcpy(ir = ip, insb, nins * sizeof(Ins));
ip += nins;
memcpy(ip, i1, (&b->ins[b->nins] - i1) * sizeof(Ins));
b->nins += nins - (i1-i);
free(b->ins);
b->ins = ib;
return ir;
} }
/* register allocation /* register allocation