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First implementation of constant propagation

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Local constant variables initialized with compile-time constants
are optimized away from the code.
This commit is contained in:
Roberto Ierusalimschy 2019-07-12 11:38:42 -03:00
parent be8445d7e4
commit f6aab3ec1f
12 changed files with 249 additions and 119 deletions
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5
lundump.c
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@ -198,12 +198,11 @@ static void LoadUpvalues (LoadState *S, Proto *f) {
n = LoadInt(S);
f->upvalues = luaM_newvectorchecked(S->L, n, Upvaldesc);
f->sizeupvalues = n;
for (i = 0; i < n; i++)
f->upvalues[i].name = NULL;
for (i = 0; i < n; i++) {
f->upvalues[i].name = NULL;
f->upvalues[i].instack = LoadByte(S);
f->upvalues[i].idx = LoadByte(S);
f->upvalues[i].ro = LoadByte(S);
f->upvalues[i].kind = LoadByte(S);
}
}