make sure non-register temporaries get a slot

Inside the main instruction-processing loop, it is taken care of by limit. However at block boundaries we are doing fancy bitset operations without calling limit.
SoftJing1 · Apr 18, 2016 · 5873a7d · 5873a7d
1 parent 98c9cf2
commit 5873a7d
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/spill.c b/spill.c
@@ -391,6 +391,9 @@ spill(Fn *fn)
 			r = retregs(b->jmp.arg, 0);
 			v->t[0] |= r;
 		}
+		for (t=Tmp0; bsiter(b->out, &t); t++)
+			if (!bshas(v, t))
+				slot(t);
 		bscopy(b->out, v);
 
 		/* 2. process the block instructions */