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sped up optimization by not optimizing

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very large functions.

R=r
OCL=34080
CL=34080
This commit is contained in:
Ken Thompson 2009-08-29 20:33:21 -07:00
parent 22c2b476a8
commit bc15b94181
3 changed files with 62 additions and 39 deletions
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6
src/cmd/6g/ggen.c
View File

@ -1175,8 +1175,12 @@ yes:
}
static int
regcmp(Node *ra, Node *rb)
regcmp(const void *va, const void *vb)
{
Node *ra, *rb;
ra = (Node*)va;
rb = (Node*)vb;
return ra->local - rb->local;
}

3
src/cmd/6g/opt.h
View File

@ -137,7 +137,8 @@ void paint1(Reg*, int);
uint32 paint2(Reg*, int);
void paint3(Reg*, int, int32, int);
void addreg(Adr*, int);
void dumpit(char *str, Reg *r0);
void dumpone(Reg*);
void dumpit(char*, Reg*);
int noreturn(Prog *p);
/*

92
src/cmd/6g/reg.c
View File

@ -106,6 +106,16 @@ regopt(Prog *firstp)
first = 0;
}
// count instructions
nr = 0;
for(p=firstp; p!=P; p=p->link)
nr++;
// if too big dont bother
if(nr >= 10000) {
print("********** %S is too big (%d)\n", curfn->nname->sym, nr);
return;
}
r1 = R;
firstr = R;
lastr = R;
@ -1464,49 +1474,56 @@ BtoF(int32 b)
}
void
dumpit(char *str, Reg *r0)
dumpone(Reg *r)
{
Reg *r, *r1;
int z;
Bits bit;
print("%ld:%P", r->loop, r->prog);
for(z=0; z<BITS; z++)
bit.b[z] =
r->set.b[z] |
r->use1.b[z] |
r->use2.b[z] |
r->refbehind.b[z] |
r->refahead.b[z] |
r->calbehind.b[z] |
r->calahead.b[z] |
r->regdiff.b[z] |
r->act.b[z] |
0;
if(bany(&bit)) {
print("\t");
if(bany(&r->set))
print(" s:%Q", r->set);
if(bany(&r->use1))
print(" u1:%Q", r->use1);
if(bany(&r->use2))
print(" u2:%Q", r->use2);
if(bany(&r->refbehind))
print(" rb:%Q ", r->refbehind);
if(bany(&r->refahead))
print(" ra:%Q ", r->refahead);
if(bany(&r->calbehind))
print("cb:%Q ", r->calbehind);
if(bany(&r->calahead))
print(" ca:%Q ", r->calahead);
if(bany(&r->regdiff))
print(" d:%Q ", r->regdiff);
if(bany(&r->act))
print(" a:%Q ", r->act);
}
print("\n");
}
void
dumpit(char *str, Reg *r0)
{
Reg *r, *r1;
print("\n%s\n", str);
for(r = r0; r != R; r = r->link) {
print("%ld:%P", r->loop, r->prog);
for(z=0; z<BITS; z++)
bit.b[z] =
r->set.b[z] |
r->use1.b[z] |
r->use2.b[z] |
r->refbehind.b[z] |
r->refahead.b[z] |
r->calbehind.b[z] |
r->calahead.b[z] |
r->regdiff.b[z] |
r->act.b[z] |
0;
if(bany(&bit)) {
print("\t");
if(bany(&r->set))
print(" s:%Q", r->set);
if(bany(&r->use1))
print(" u1:%Q", r->use1);
if(bany(&r->use2))
print(" u2:%Q", r->use2);
if(bany(&r->refbehind))
print(" rb:%Q ", r->refbehind);
if(bany(&r->refahead))
print(" ra:%Q ", r->refahead);
if(bany(&r->calbehind))
print("cb:%Q ", r->calbehind);
if(bany(&r->calahead))
print(" ca:%Q ", r->calahead);
if(bany(&r->regdiff))
print(" d:%Q ", r->regdiff);
if(bany(&r->act))
print(" a:%Q ", r->act);
}
print("\n");
dumpone(r);
r1 = r->p2;
if(r1 != R) {
print(" pred:");
@ -1535,6 +1552,7 @@ noreturn(Prog *p)
if(symlist[0] == S) {
symlist[0] = pkglookup("throwindex", "sys");
symlist[0] = pkglookup("throwslice", "sys");
symlist[0] = pkglookup("throwinit", "sys");
symlist[1] = pkglookup("panicl", "sys");
}