Update skeleton

examples/gvn/gvn.output.ir

@@ -0,0 +1,46 @@
+fun unit @sink {
+init:
+  bid: b0
+  allocations:
+
+block b0:
+  %b0:p0:i32
+  ret unit:unit
+}
+
+fun i32 @gvn {
+init:
+  bid: b0
+  allocations:
+
+block b0:
+  %b0:p0:i32:a
+  %b0:i0:i32:b = add %b0:p0:i32 1:i32
+  br undef:i1 b1() b2()
+
+block b1:
+  %b1:i0:i32:b = add %b0:p0:i32 1:i32
+  %b1:i1:i32:c = add %b0:i0:i32 2:i32
+
+  %b1:i2:unit = call @sink(%b0:i0:i32)
+
+  j b3(%b1:i1:i32)
+
+block b2:
+  %b2:i0:i32:c = add %b0:i0:i32 2:i32
+
+  %b2:i1:unit = call @sink(%b2:i0:i32)
+
+  j b3(%b2:i0:i32)
+
+block b3:
+  %b3:p0:i32
+
+  %b3:i0:i32:b = add %b0:p0:i32 1:i32
+  %b3:i1:i32:c = add %b0:i0:i32 2:i32
+
+  %b3:i2:unit = call @sink(%b0:i0:i32)
+  %b3:i3:unit = call @sink(%b3:p0:i32)
+
+  ret 0:i32
+}