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authorKartik K. Agaram <vc@akkartik.com>2017-02-07 00:22:08 -0800
committerKartik K. Agaram <vc@akkartik.com>2017-02-07 00:22:08 -0800
commit598f1b5362eb799e40836ceeb5452c9ba937fd6c (patch)
tree87c60bb17b9a4b5843a7a510c6800150fe6c36d7 /html/043space.cc.html
parentfbe0f91376a4f1ed98e95b35d1b9e7629a743c30 (diff)
downloadmu-598f1b5362eb799e40836ceeb5452c9ba937fd6c.tar.gz
3746
Diffstat (limited to 'html/043space.cc.html')
-rw-r--r--html/043space.cc.html365
1 files changed, 187 insertions, 178 deletions
diff --git a/html/043space.cc.html b/html/043space.cc.html
index efc582f4..60bc5518 100644
--- a/html/043space.cc.html
+++ b/html/043space.cc.html
@@ -127,7 +127,7 @@ if ('onhashchange' in window) {
 <span id="L63" class="LineNr"> 63 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name == <span class="Constant">&quot;default-space&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
 <span id="L64" class="LineNr"> 64 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>initialized<span class="Delimiter">)</span>
 <span id="L65" class="LineNr"> 65 </span>    <a href='003trace.cc.html#L178'>raise</a> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;: reagent not initialized: '&quot;</span> &lt;&lt; x<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>
-<span id="L66" class="LineNr"> 66 </span>  x<span class="Delimiter">.</span><a href='010vm.cc.html#L66'>set_value</a><span class="Delimiter">(</span><a href='043space.cc.html#L76'>address</a><span class="Delimiter">(</span>x<span class="Delimiter">.</span>value<span class="Delimiter">,</span> space_base<span class="Delimiter">(</span>x<span class="Delimiter">)));</span>
+<span id="L66" class="LineNr"> 66 </span>  x<span class="Delimiter">.</span><a href='010vm.cc.html#L65'>set_value</a><span class="Delimiter">(</span><a href='043space.cc.html#L76'>address</a><span class="Delimiter">(</span>x<span class="Delimiter">.</span>value<span class="Delimiter">,</span> space_base<span class="Delimiter">(</span>x<span class="Delimiter">)));</span>
 <span id="L67" class="LineNr"> 67 </span>  x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>pair&lt;string<span class="Delimiter">,</span> string_tree*&gt;<span class="Delimiter">(</span><span class="Constant">&quot;raw&quot;</span><span class="Delimiter">,</span> <span class="Constant">NULL</span><span class="Delimiter">));</span>
 <span id="L68" class="LineNr"> 68 </span>  assert<span class="Delimiter">(</span><a href='022arithmetic.cc.html#L108'>is_raw</a><span class="Delimiter">(</span>x<span class="Delimiter">));</span>
 <span id="L69" class="LineNr"> 69 </span><span class="Delimiter">}</span>
@@ -241,7 +241,7 @@ if ('onhashchange' in window) {
 <span id="L177" class="LineNr">177 </span><span class="Comment">//   `default-space:space &lt;- new location:type, number-of-locals:literal`</span>
 <span id="L178" class="LineNr">178 </span><span class="Comment">// where N is Name[recipe][&quot;&quot;]</span>
 <span id="L179" class="LineNr">179 </span><span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">.</span>name == <span class="Constant">&quot;new-default-space&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L180" class="LineNr">180 </span>  <a href='043space.cc.html#L305'>rewrite_default_space_instruction</a><span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
+<span id="L180" class="LineNr">180 </span>  <a href='043space.cc.html#L314'>rewrite_default_space_instruction</a><span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
 <span id="L181" class="LineNr">181 </span><span class="Delimiter">}</span>
 <span id="L182" class="LineNr">182 </span><span class="Delimiter">:(after &quot;Begin Preprocess read_memory(x)&quot;)</span>
 <span id="L183" class="LineNr">183 </span><span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name == <span class="Constant">&quot;number-of-locals&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -283,7 +283,7 @@ if ('onhashchange' in window) {
 <span id="L219" class="LineNr">219 </span>
 <span id="L220" class="LineNr">220 </span><span class="Delimiter">:(before &quot;End Rewrite Instruction(curr, <a href='010vm.cc.html#L19'>recipe</a> result)&quot;)</span>
 <span id="L221" class="LineNr">221 </span><span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">.</span>name == <span class="Constant">&quot;local-scope&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L222" class="LineNr">222 </span>  <a href='043space.cc.html#L305'>rewrite_default_space_instruction</a><span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
+<span id="L222" class="LineNr">222 </span>  <a href='043space.cc.html#L314'>rewrite_default_space_instruction</a><span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
 <span id="L223" class="LineNr">223 </span><span class="Delimiter">}</span>
 <span id="L224" class="LineNr">224 </span>
 <span id="L225" class="LineNr">225 </span><span class="Comment">//: todo: do this in a transform, rather than magically in the 'return' instruction</span>
@@ -309,7 +309,7 @@ if ('onhashchange' in window) {
 <span id="L245" class="LineNr">245 </span>      <span class="Comment">// local variables only</span>
 <span id="L246" class="LineNr">246 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>product<span class="Delimiter">,</span> <span class="Constant">&quot;lookup&quot;</span><span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
 <span id="L247" class="LineNr">247 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>product<span class="Delimiter">,</span> <span class="Constant">&quot;raw&quot;</span><span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// tests often want to check such locations after they run</span>
-<span id="L248" class="LineNr">248 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span><a href='043space.cc.html#L264'>escaping</a><span class="Delimiter">(</span>product<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+<span id="L248" class="LineNr">248 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span><a href='043space.cc.html#L273'>escaping</a><span class="Delimiter">(</span>product<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
 <span id="L249" class="LineNr">249 </span>      <span class="Comment">// End Checks For Reclaiming Locals</span>
 <span id="L250" class="LineNr">250 </span>      <a href='003trace.cc.html#L171'>trace</a><span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;clearing &quot;</span> &lt;&lt; product<span class="Delimiter">.</span>original_string &lt;&lt; <a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>
 <span id="L251" class="LineNr">251 </span>      zeros<span class="Delimiter">.</span>resize<span class="Delimiter">(</span>size_of<span class="Delimiter">(</span>product<span class="Delimiter">));</span>
@@ -322,180 +322,189 @@ if ('onhashchange' in window) {
 <span id="L258" class="LineNr">258 </span>          <span class="Comment">/*</span><span class="Comment">refcount</span><span class="Comment">*/</span><span class="Constant">1</span> + <span class="Comment">/*</span><span class="Comment">array length</span><span class="Comment">*/</span><span class="Constant">1</span> + <span class="Comment">/*</span><span class="Comment">number-of-locals</span><span class="Comment">*/</span>Name[r][<span class="Constant">&quot;&quot;</span>]<span class="Delimiter">);</span>
 <span id="L259" class="LineNr">259 </span><span class="Delimiter">}</span>
 <span id="L260" class="LineNr">260 </span>
-<span id="L261" class="LineNr">261 </span><span class="Delimiter">:(code)</span>
-<span id="L262" class="LineNr">262 </span><span class="Comment">// is this reagent one of the values returned by the current (return) instruction?</span>
-<span id="L263" class="LineNr">263 </span><span class="Comment">// is the corresponding ingredient saved in the caller?</span>
-<span id="L264" class="LineNr">264 </span><span class="Normal">bool</span> <a href='043space.cc.html#L264'>escaping</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L265" class="LineNr">265 </span>  assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">);</span>  <span class="Comment">// run-time only</span>
-<span id="L266" class="LineNr">266 </span>  <span class="Comment">// nothing escapes when you fall through past end of recipe</span>
-<span id="L267" class="LineNr">267 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>current_step_index<span class="Delimiter">()</span> &gt;= <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>steps<span class="Delimiter">()))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L268" class="LineNr">268 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L269" class="LineNr">269 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>r == current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-<span id="L270" class="LineNr">270 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span><a href='043space.cc.html#L295'>caller_uses_product</a><span class="Delimiter">(</span>i<span class="Delimiter">))</span>
-<span id="L271" class="LineNr">271 </span>        <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L272" class="LineNr">272 </span>    <span class="Delimiter">}</span>
-<span id="L273" class="LineNr">273 </span>  <span class="Delimiter">}</span>
-<span id="L274" class="LineNr">274 </span>  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L275" class="LineNr">275 </span><span class="Delimiter">}</span>
-<span id="L276" class="LineNr">276 </span>
-<span id="L277" class="LineNr">277 </span><span class="Comment">//: since we don't decrement refcounts for escaping values above, make sure we</span>
-<span id="L278" class="LineNr">278 </span><span class="Comment">//: don't increment them when the caller saves them either</span>
-<span id="L279" class="LineNr">279 </span>
-<span id="L280" class="LineNr">280 </span><span class="Delimiter">:(after &quot;Write Products of Instruction&quot;)</span>
-<span id="L281" class="LineNr">281 </span>Update_refcounts_in_write_memory = <a href='043space.cc.html#L285'>should_update_refcounts_in_write_memory</a><span class="Delimiter">();</span>
-<span id="L282" class="LineNr">282 </span><span class="Delimiter">:(before &quot;End Write Products of Instruction&quot;)</span>
-<span id="L283" class="LineNr">283 </span>Update_refcounts_in_write_memory = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L284" class="LineNr">284 </span><span class="Delimiter">:(code)</span>
-<span id="L285" class="LineNr">285 </span><span class="Normal">bool</span> <a href='043space.cc.html#L285'>should_update_refcounts_in_write_memory</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
-<span id="L286" class="LineNr">286 </span>  <span class="Normal">const</span> instruction&amp; inst = current_instruction<span class="Delimiter">();</span>
-<span id="L287" class="LineNr">287 </span>  <span class="Comment">// End should_update_refcounts_in_write_memory Special-cases For Primitives</span>
-<span id="L288" class="LineNr">288 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation &lt; <a href='010vm.cc.html#L192'>MAX_PRIMITIVE_RECIPES</a><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L289" class="LineNr">289 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L290" class="LineNr">290 </span>  <span class="Normal">const</span> recipe&amp; callee = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">);</span>
-<span id="L291" class="LineNr">291 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>callee<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L292" class="LineNr">292 </span>  <span class="Identifier">return</span> callee<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>old_name != <span class="Constant">&quot;local-scope&quot;</span><span class="Delimiter">;</span>  <span class="Comment">// callees that call local-scope are already dealt with before return</span>
-<span id="L293" class="LineNr">293 </span><span class="Delimiter">}</span>
-<span id="L294" class="LineNr">294 </span>
-<span id="L295" class="LineNr">295 </span><span class="Normal">bool</span> <a href='043space.cc.html#L295'>caller_uses_product</a><span class="Delimiter">(</span><span class="Normal">int</span> product_index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L296" class="LineNr">296 </span>  assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">);</span>  <span class="Comment">// run-time only</span>
-<span id="L297" class="LineNr">297 </span>  assert<span class="Delimiter">(</span>!Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
-<span id="L298" class="LineNr">298 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>size<span class="Delimiter">()</span> == <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L299" class="LineNr">299 </span>  <span class="Normal">const</span> call&amp; caller = *++Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>
-<span id="L300" class="LineNr">300 </span>  <span class="Normal">const</span> instruction&amp; caller_inst = to_instruction<span class="Delimiter">(</span>caller<span class="Delimiter">);</span>
-<span id="L301" class="LineNr">301 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>product_index &gt;= <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>caller_inst<span class="Delimiter">.</span>products<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L302" class="LineNr">302 </span>  <span class="Identifier">return</span> !is_dummy<span class="Delimiter">(</span>caller_inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>product_index<span class="Delimiter">));</span>
-<span id="L303" class="LineNr">303 </span><span class="Delimiter">}</span>
-<span id="L304" class="LineNr">304 </span>
-<span id="L305" class="LineNr">305 </span><span class="Normal">void</span> <a href='043space.cc.html#L305'>rewrite_default_space_instruction</a><span class="Delimiter">(</span>instruction&amp; curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L306" class="LineNr">306 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span>
-<span id="L307" class="LineNr">307 </span>    <a href='003trace.cc.html#L178'>raise</a> &lt;&lt; to_original_string<span class="Delimiter">(</span>curr<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; can't take any ingredients</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-<span id="L308" class="LineNr">308 </span>  curr<span class="Delimiter">.</span>name = <span class="Constant">&quot;new&quot;</span><span class="Delimiter">;</span>
-<span id="L309" class="LineNr">309 </span>  <span class="Constant">curr.ingredients.push_back(reagent(&quot;location:type</span><span class="Constant">&quot;));</span>
-<span id="L310" class="LineNr">310 </span>  <span class="Constant">curr.ingredients.push_back(reagent(&quot;number-of-locals:literal</span><span class="Constant">&quot;));</span>
-<span id="L311" class="LineNr">311 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span>
-<span id="L312" class="LineNr">312 </span>    <a href='003trace.cc.html#L178'>raise</a> &lt;&lt; <span class="Constant">&quot;new-default-space can't take any results</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-<span id="L313" class="LineNr">313 </span>  curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span><span class="Constant">&quot;default-space:space&quot;</span><span class="Delimiter">));</span>
-<span id="L314" class="LineNr">314 </span><span class="Delimiter">}</span>
-<span id="L315" class="LineNr">315 </span>
-<span id="L316" class="LineNr">316 </span><span class="Delimiter">:(scenario local_scope_frees_up_addresses_inside_containers)</span>
-<span id="L317" class="LineNr">317 </span><span class="muData">container</span> foo [
-<span id="L318" class="LineNr">318 </span>  <span class="Normal">x</span>:num
-<span id="L319" class="LineNr">319 </span>  <span class="Normal">y</span>:&amp;:num
-<span id="L320" class="LineNr">320 </span>]
-<span id="L321" class="LineNr">321 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L322" class="LineNr">322 </span>  local-scope
-<span id="L323" class="LineNr">323 </span>  <span class="Normal">x</span>:&amp;:num<span class="Special"> &lt;- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
-<span id="L324" class="LineNr">324 </span>  <span class="Normal">y</span>:foo<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> x:&amp;:num
-<span id="L325" class="LineNr">325 </span>  <span class="Comment"># x and y are both cleared when main returns</span>
-<span id="L326" class="LineNr">326 </span>]
-<span id="L327" class="LineNr">327 </span><span class="traceContains">+mem: clearing x:&amp;:num</span>
-<span id="L328" class="LineNr">328 </span><span class="traceContains">+mem: decrementing refcount of 1006: 2 -&gt; 1</span>
-<span id="L329" class="LineNr">329 </span><span class="traceContains">+mem: clearing y:foo</span>
-<span id="L330" class="LineNr">330 </span><span class="traceContains">+mem: decrementing refcount of 1006: 1 -&gt; 0</span>
-<span id="L331" class="LineNr">331 </span><span class="traceContains">+mem: automatically abandoning 1006</span>
-<span id="L332" class="LineNr">332 </span>
-<span id="L333" class="LineNr">333 </span><span class="Delimiter">:(scenario local_scope_returns_addresses_inside_containers)</span>
-<span id="L334" class="LineNr">334 </span><span class="muData">container</span> foo [
-<span id="L335" class="LineNr">335 </span>  <span class="Normal">x</span>:num
-<span id="L336" class="LineNr">336 </span>  <span class="Normal">y</span>:&amp;:num
-<span id="L337" class="LineNr">337 </span>]
-<span id="L338" class="LineNr">338 </span><span class="muRecipe">def</span> f [
-<span id="L339" class="LineNr">339 </span>  local-scope
-<span id="L340" class="LineNr">340 </span>  <span class="Normal">x</span>:&amp;:num<span class="Special"> &lt;- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
-<span id="L341" class="LineNr">341 </span>  *x:&amp;:num<span class="Special"> &lt;- </span>copy <span class="Constant">12</span>
-<span id="L342" class="LineNr">342 </span>  <span class="Normal">y</span>:foo<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> x:&amp;:num
-<span id="L343" class="LineNr">343 </span>  <span class="Comment"># since y is 'escaping' f, it should not be cleared</span>
-<span id="L344" class="LineNr">344 </span>  <span class="Identifier">return</span> y:foo
-<span id="L345" class="LineNr">345 </span>]
-<span id="L346" class="LineNr">346 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L347" class="LineNr">347 </span>  <span class="Constant">1</span>:foo<span class="Special"> &lt;- </span>f
-<span id="L348" class="LineNr">348 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo<span class="Delimiter">,</span> <span class="Constant">x:offset</span>
-<span id="L349" class="LineNr">349 </span>  <span class="Constant">4</span>:&amp;:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo<span class="Delimiter">,</span> <span class="Constant">y:offset</span>
-<span id="L350" class="LineNr">350 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy *<span class="Constant">4</span>:&amp;:num
-<span id="L351" class="LineNr">351 </span>  <span class="Constant">1</span>:foo<span class="Special"> &lt;- </span><a href='001help.cc.html#L218'>put</a> <span class="Constant">1</span>:foo<span class="Delimiter">,</span> <span class="Constant">y:offset</span><span class="Delimiter">,</span> <span class="Constant">0</span>
-<span id="L352" class="LineNr">352 </span>  <span class="Constant">4</span>:&amp;:num<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
-<span id="L353" class="LineNr">353 </span>]
-<span id="L354" class="LineNr">354 </span><span class="traceContains">+mem: storing 34 in location 1</span>
-<span id="L355" class="LineNr">355 </span><span class="traceContains">+mem: storing 1006 in location 2</span>
-<span id="L356" class="LineNr">356 </span><span class="traceContains">+mem: storing 34 in location 3</span>
-<span id="L357" class="LineNr">357 </span><span class="Comment"># refcount of 1:foo shouldn't include any stray ones from f</span>
-<span id="L358" class="LineNr">358 </span><span class="traceContains">+run: {4: (&quot;address&quot; &quot;number&quot;)} &lt;- get {1: &quot;foo&quot;}, {y: &quot;offset&quot;}</span>
-<span id="L359" class="LineNr">359 </span><span class="traceContains">+mem: incrementing refcount of 1006: 1 -&gt; 2</span>
-<span id="L360" class="LineNr">360 </span><span class="Comment"># 1:foo wasn't abandoned/cleared</span>
-<span id="L361" class="LineNr">361 </span><span class="traceContains">+run: {5: &quot;number&quot;} &lt;- copy {4: (&quot;address&quot; &quot;number&quot;), &quot;lookup&quot;: ()}</span>
-<span id="L362" class="LineNr">362 </span><span class="traceContains">+mem: storing 12 in location 5</span>
-<span id="L363" class="LineNr">363 </span><span class="traceContains">+run: {1: &quot;foo&quot;} &lt;- <a href='001help.cc.html#L218'>put</a> {1: &quot;foo&quot;}, {y: &quot;offset&quot;}, {0: &quot;literal&quot;}</span>
-<span id="L364" class="LineNr">364 </span><span class="traceContains">+mem: decrementing refcount of 1006: 2 -&gt; 1</span>
-<span id="L365" class="LineNr">365 </span><span class="traceContains">+run: {4: (&quot;address&quot; &quot;number&quot;)} &lt;- copy {0: &quot;literal&quot;}</span>
-<span id="L366" class="LineNr">366 </span><span class="traceContains">+mem: decrementing refcount of 1006: 1 -&gt; 0</span>
-<span id="L367" class="LineNr">367 </span><span class="traceContains">+mem: automatically abandoning 1006</span>
-<span id="L368" class="LineNr">368 </span>
-<span id="L369" class="LineNr">369 </span><span class="Delimiter">:(scenario local_scope_claims_return_values_when_not_saved)</span>
-<span id="L370" class="LineNr">370 </span><span class="muRecipe">def</span> f [
-<span id="L371" class="LineNr">371 </span>  local-scope
-<span id="L372" class="LineNr">372 </span>  <span class="Normal">x</span>:&amp;:num<span class="Special"> &lt;- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
-<span id="L373" class="LineNr">373 </span>  <span class="Identifier">return</span> x:&amp;:num
-<span id="L374" class="LineNr">374 </span>]
-<span id="L375" class="LineNr">375 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
-<span id="L376" class="LineNr">376 </span>  f  <span class="Comment"># doesn't save result</span>
-<span id="L377" class="LineNr">377 </span>]
-<span id="L378" class="LineNr">378 </span><span class="Comment"># x reclaimed</span>
-<span id="L379" class="LineNr">379 </span><span class="traceContains">+mem: automatically abandoning 1004</span>
-<span id="L380" class="LineNr">380 </span><span class="Comment"># f's local scope reclaimed</span>
-<span id="L381" class="LineNr">381 </span><span class="traceContains">+mem: automatically abandoning 1000</span>
-<span id="L382" class="LineNr">382 </span>
-<span id="L383" class="LineNr">383 </span><span class="SalientComment">//:: all recipes must set default-space one way or another</span>
-<span id="L384" class="LineNr">384 </span>
-<span id="L385" class="LineNr">385 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
-<span id="L386" class="LineNr">386 </span><span class="Normal">bool</span> Hide_missing_default_space_errors = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L387" class="LineNr">387 </span><span class="Delimiter">:(before &quot;End Checks&quot;)</span>
-<span id="L388" class="LineNr">388 </span>Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>check_default_space<span class="Delimiter">);</span>  <span class="Comment">// idempotent</span>
-<span id="L389" class="LineNr">389 </span><span class="Delimiter">:(code)</span>
-<span id="L390" class="LineNr">390 </span><span class="Normal">void</span> check_default_space<span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L391" class="LineNr">391 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Hide_missing_default_space_errors<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// skip previous core tests; this is only for Mu code</span>
-<span id="L392" class="LineNr">392 </span>  <span class="Normal">const</span> recipe&amp; caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
-<span id="L393" class="LineNr">393 </span>  <span class="Comment">// End check_default_space Special-cases</span>
-<span id="L394" class="LineNr">394 </span>  <span class="Comment">// assume recipes with only numeric addresses know what they're doing (usually tests)</span>
-<span id="L395" class="LineNr">395 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_non_special_name<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L396" class="LineNr">396 </span>  <a href='003trace.cc.html#L171'>trace</a><span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;--- check that <a href='010vm.cc.html#L19'>recipe</a> &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; sets default-space&quot;</span> &lt;&lt; <a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>
-<span id="L397" class="LineNr">397 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span id="L398" class="LineNr">398 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span>
-<span id="L399" class="LineNr">399 </span>      || caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != <span class="Constant">&quot;default-space&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L400" class="LineNr">400 </span>    <a href='003trace.cc.html#L178'>raise</a> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; does not seem to start with default-space or local-scope</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>
-<span id="L401" class="LineNr">401 </span>  <span class="Delimiter">}</span>
-<span id="L402" class="LineNr">402 </span><span class="Delimiter">}</span>
-<span id="L403" class="LineNr">403 </span><span class="Delimiter">:(after &quot;Load Mu Prelude&quot;)</span>
-<span id="L404" class="LineNr">404 </span>Hide_missing_default_space_errors = <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L405" class="LineNr">405 </span><span class="Delimiter">:(after &quot;Test Runs&quot;)</span>
-<span id="L406" class="LineNr">406 </span>Hide_missing_default_space_errors = <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L407" class="LineNr">407 </span><span class="Delimiter">:(after &quot;Running Main&quot;)</span>
-<span id="L408" class="LineNr">408 </span>Hide_missing_default_space_errors = <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L409" class="LineNr">409 </span>
-<span id="L410" class="LineNr">410 </span><span class="Delimiter">:(code)</span>
-<span id="L411" class="LineNr">411 </span><span class="Normal">bool</span> contains_non_special_name<span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L412" class="LineNr">412 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;string<span class="Delimiter">,</span> <span class="Normal">int</span>&gt;::iterator p = Name[r]<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Name[r]<span class="Delimiter">.</span><a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L413" class="LineNr">413 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
-<span id="L414" class="LineNr">414 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">&quot;stash_&quot;</span><span class="Delimiter">)</span> == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// generated by rewrite_stashes_to_text (cross-layer)</span>
-<span id="L415" class="LineNr">415 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!is_special_name<span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">))</span>
-<span id="L416" class="LineNr">416 </span>      <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L417" class="LineNr">417 </span>  <span class="Delimiter">}</span>
-<span id="L418" class="LineNr">418 </span>  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L419" class="LineNr">419 </span><span class="Delimiter">}</span>
-<span id="L420" class="LineNr">420 </span>
-<span id="L421" class="LineNr">421 </span><span class="Comment">// reagent comparison -- only between reagents in a single recipe</span>
-<span id="L422" class="LineNr">422 </span><span class="Normal">bool</span> <span class="Normal">operator</span>==<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; a<span class="Delimiter">,</span> <span class="Normal">const</span> reagent&amp; b<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L423" class="LineNr">423 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>a<span class="Delimiter">.</span>name != b<span class="Delimiter">.</span>name<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L424" class="LineNr">424 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>property<span class="Delimiter">(</span>a<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">)</span> != property<span class="Delimiter">(</span>b<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-<span id="L425" class="LineNr">425 </span>  <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
-<span id="L426" class="LineNr">426 </span><span class="Delimiter">}</span>
-<span id="L427" class="LineNr">427 </span>
-<span id="L428" class="LineNr">428 </span><span class="Normal">bool</span> <span class="Normal">operator</span>&lt;<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; a<span class="Delimiter">,</span> <span class="Normal">const</span> reagent&amp; b<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-<span id="L429" class="LineNr">429 </span>  <span class="Normal">int</span> aspace = <span class="Constant">0</span><span class="Delimiter">,</span> bspace = <span class="Constant">0</span><span class="Delimiter">;</span>
-<span id="L430" class="LineNr">430 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>a<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">))</span> aspace = <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>property<span class="Delimiter">(</span>a<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">)-&gt;</span>value<span class="Delimiter">);</span>
-<span id="L431" class="LineNr">431 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>b<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">))</span> bspace = <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>property<span class="Delimiter">(</span>b<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">)-&gt;</span>value<span class="Delimiter">);</span>
-<span id="L432" class="LineNr">432 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>aspace != bspace<span class="Delimiter">)</span> <span class="Identifier">return</span> aspace &lt; bspace<span class="Delimiter">;</span>
-<span id="L433" class="LineNr">433 </span>  <span class="Identifier">return</span> a<span class="Delimiter">.</span>name &lt; b<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
-<span id="L434" class="LineNr">434 </span><span class="Delimiter">}</span>
+<span id="L261" class="LineNr">261 </span><span class="Comment">//: Reclaiming local variables above requires remembering what name an</span>
+<span id="L262" class="LineNr">262 </span><span class="Comment">//: instruction had before any rewrites or transforms.</span>
+<span id="L263" class="LineNr">263 </span><span class="Delimiter">:(before &quot;End <a href='010vm.cc.html#L32'>instruction</a> Fields&quot;)</span>
+<span id="L264" class="LineNr">264 </span>string old_name<span class="Delimiter">;</span>
+<span id="L265" class="LineNr">265 </span><span class="Delimiter">:(before &quot;End <a href='010vm.cc.html#L32'>instruction</a> Clear&quot;)</span>
+<span id="L266" class="LineNr">266 </span>old_name<span class="Delimiter">.</span><a href='050scenario.cc.html#L60'>clear</a><span class="Delimiter">();</span>
+<span id="L267" class="LineNr">267 </span><span class="Delimiter">:(before &quot;End next_instruction(curr)&quot;)</span>
+<span id="L268" class="LineNr">268 </span>curr<span class="Delimiter">-&gt;</span>old_name = curr<span class="Delimiter">-&gt;</span>name<span class="Delimiter">;</span>  <span class="Comment">// before rewrite rules modify it</span>
+<span id="L269" class="LineNr">269 </span>
+<span id="L270" class="LineNr">270 </span><span class="Delimiter">:(code)</span>
+<span id="L271" class="LineNr">271 </span><span class="Comment">// is this reagent one of the values returned by the current (return) instruction?</span>
+<span id="L272" class="LineNr">272 </span><span class="Comment">// is the corresponding ingredient saved in the caller?</span>
+<span id="L273" class="LineNr">273 </span><span class="Normal">bool</span> <a href='043space.cc.html#L273'>escaping</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L274" class="LineNr">274 </span>  assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">);</span>  <span class="Comment">// run-time only</span>
+<span id="L275" class="LineNr">275 </span>  <span class="Comment">// nothing escapes when you fall through past end of recipe</span>
+<span id="L276" class="LineNr">276 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>current_step_index<span class="Delimiter">()</span> &gt;= <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>steps<span class="Delimiter">()))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L277" class="LineNr">277 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L278" class="LineNr">278 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>r == current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+<span id="L279" class="LineNr">279 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span><a href='043space.cc.html#L304'>caller_uses_product</a><span class="Delimiter">(</span>i<span class="Delimiter">))</span>
+<span id="L280" class="LineNr">280 </span>        <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L281" class="LineNr">281 </span>    <span class="Delimiter">}</span>
+<span id="L282" class="LineNr">282 </span>  <span class="Delimiter">}</span>
+<span id="L283" class="LineNr">283 </span>  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L284" class="LineNr">284 </span><span class="Delimiter">}</span>
+<span id="L285" class="LineNr">285 </span>
+<span id="L286" class="LineNr">286 </span><span class="Comment">//: since we don't decrement refcounts for escaping values above, make sure we</span>
+<span id="L287" class="LineNr">287 </span><span class="Comment">//: don't increment them when the caller saves them either</span>
+<span id="L288" class="LineNr">288 </span>
+<span id="L289" class="LineNr">289 </span><span class="Delimiter">:(after &quot;Write Products of Instruction&quot;)</span>
+<span id="L290" class="LineNr">290 </span>Update_refcounts_in_write_memory = <a href='043space.cc.html#L294'>should_update_refcounts_in_write_memory</a><span class="Delimiter">();</span>
+<span id="L291" class="LineNr">291 </span><span class="Delimiter">:(before &quot;End Write Products of Instruction&quot;)</span>
+<span id="L292" class="LineNr">292 </span>Update_refcounts_in_write_memory = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L293" class="LineNr">293 </span><span class="Delimiter">:(code)</span>
+<span id="L294" class="LineNr">294 </span><span class="Normal">bool</span> <a href='043space.cc.html#L294'>should_update_refcounts_in_write_memory</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
+<span id="L295" class="LineNr">295 </span>  <span class="Normal">const</span> instruction&amp; inst = current_instruction<span class="Delimiter">();</span>
+<span id="L296" class="LineNr">296 </span>  <span class="Comment">// End should_update_refcounts_in_write_memory Special-cases For Primitives</span>
+<span id="L297" class="LineNr">297 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation &lt; <a href='010vm.cc.html#L191'>MAX_PRIMITIVE_RECIPES</a><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L298" class="LineNr">298 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L299" class="LineNr">299 </span>  <span class="Normal">const</span> recipe&amp; callee = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">);</span>
+<span id="L300" class="LineNr">300 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>callee<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L301" class="LineNr">301 </span>  <span class="Identifier">return</span> callee<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>old_name != <span class="Constant">&quot;local-scope&quot;</span><span class="Delimiter">;</span>  <span class="Comment">// callees that call local-scope are already dealt with before return</span>
+<span id="L302" class="LineNr">302 </span><span class="Delimiter">}</span>
+<span id="L303" class="LineNr">303 </span>
+<span id="L304" class="LineNr">304 </span><span class="Normal">bool</span> <a href='043space.cc.html#L304'>caller_uses_product</a><span class="Delimiter">(</span><span class="Normal">int</span> product_index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L305" class="LineNr">305 </span>  assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">);</span>  <span class="Comment">// run-time only</span>
+<span id="L306" class="LineNr">306 </span>  assert<span class="Delimiter">(</span>!Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
+<span id="L307" class="LineNr">307 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>size<span class="Delimiter">()</span> == <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L308" class="LineNr">308 </span>  <span class="Normal">const</span> call&amp; caller = *++Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>
+<span id="L309" class="LineNr">309 </span>  <span class="Normal">const</span> instruction&amp; caller_inst = to_instruction<span class="Delimiter">(</span>caller<span class="Delimiter">);</span>
+<span id="L310" class="LineNr">310 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>product_index &gt;= <a href='001help.cc.html#L138'>SIZE</a><span class="Delimiter">(</span>caller_inst<span class="Delimiter">.</span>products<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L311" class="LineNr">311 </span>  <span class="Identifier">return</span> !is_dummy<span class="Delimiter">(</span>caller_inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>product_index<span class="Delimiter">));</span>
+<span id="L312" class="LineNr">312 </span><span class="Delimiter">}</span>
+<span id="L313" class="LineNr">313 </span>
+<span id="L314" class="LineNr">314 </span><span class="Normal">void</span> <a href='043space.cc.html#L314'>rewrite_default_space_instruction</a><span class="Delimiter">(</span>instruction&amp; curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L315" class="LineNr">315 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span>
+<span id="L316" class="LineNr">316 </span>    <a href='003trace.cc.html#L178'>raise</a> &lt;&lt; to_original_string<span class="Delimiter">(</span>curr<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; can't take any ingredients</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+<span id="L317" class="LineNr">317 </span>  curr<span class="Delimiter">.</span>name = <span class="Constant">&quot;new&quot;</span><span class="Delimiter">;</span>
+<span id="L318" class="LineNr">318 </span>  <span class="Constant">curr.ingredients.push_back(reagent(&quot;location:type</span><span class="Constant">&quot;));</span>
+<span id="L319" class="LineNr">319 </span>  <span class="Constant">curr.ingredients.push_back(reagent(&quot;number-of-locals:literal</span><span class="Constant">&quot;));</span>
+<span id="L320" class="LineNr">320 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span>
+<span id="L321" class="LineNr">321 </span>    <a href='003trace.cc.html#L178'>raise</a> &lt;&lt; <span class="Constant">&quot;new-default-space can't take any results</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+<span id="L322" class="LineNr">322 </span>  curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span><span class="Constant">&quot;default-space:space&quot;</span><span class="Delimiter">));</span>
+<span id="L323" class="LineNr">323 </span><span class="Delimiter">}</span>
+<span id="L324" class="LineNr">324 </span>
+<span id="L325" class="LineNr">325 </span><span class="Delimiter">:(scenario local_scope_frees_up_addresses_inside_containers)</span>
+<span id="L326" class="LineNr">326 </span><span class="muData">container</span> foo [
+<span id="L327" class="LineNr">327 </span>  <span class="Normal">x</span>:num
+<span id="L328" class="LineNr">328 </span>  <span class="Normal">y</span>:&amp;:num
+<span id="L329" class="LineNr">329 </span>]
+<span id="L330" class="LineNr">330 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L331" class="LineNr">331 </span>  local-scope
+<span id="L332" class="LineNr">332 </span>  <span class="Normal">x</span>:&amp;:num<span class="Special"> &lt;- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
+<span id="L333" class="LineNr">333 </span>  <span class="Normal">y</span>:foo<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> x:&amp;:num
+<span id="L334" class="LineNr">334 </span>  <span class="Comment"># x and y are both cleared when main returns</span>
+<span id="L335" class="LineNr">335 </span>]
+<span id="L336" class="LineNr">336 </span><span class="traceContains">+mem: clearing x:&amp;:num</span>
+<span id="L337" class="LineNr">337 </span><span class="traceContains">+mem: decrementing refcount of 1006: 2 -&gt; 1</span>
+<span id="L338" class="LineNr">338 </span><span class="traceContains">+mem: clearing y:foo</span>
+<span id="L339" class="LineNr">339 </span><span class="traceContains">+mem: decrementing refcount of 1006: 1 -&gt; 0</span>
+<span id="L340" class="LineNr">340 </span><span class="traceContains">+mem: automatically abandoning 1006</span>
+<span id="L341" class="LineNr">341 </span>
+<span id="L342" class="LineNr">342 </span><span class="Delimiter">:(scenario local_scope_returns_addresses_inside_containers)</span>
+<span id="L343" class="LineNr">343 </span><span class="muData">container</span> foo [
+<span id="L344" class="LineNr">344 </span>  <span class="Normal">x</span>:num
+<span id="L345" class="LineNr">345 </span>  <span class="Normal">y</span>:&amp;:num
+<span id="L346" class="LineNr">346 </span>]
+<span id="L347" class="LineNr">347 </span><span class="muRecipe">def</span> f [
+<span id="L348" class="LineNr">348 </span>  local-scope
+<span id="L349" class="LineNr">349 </span>  <span class="Normal">x</span>:&amp;:num<span class="Special"> &lt;- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
+<span id="L350" class="LineNr">350 </span>  *x:&amp;:num<span class="Special"> &lt;- </span>copy <span class="Constant">12</span>
+<span id="L351" class="LineNr">351 </span>  <span class="Normal">y</span>:foo<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> x:&amp;:num
+<span id="L352" class="LineNr">352 </span>  <span class="Comment"># since y is 'escaping' f, it should not be cleared</span>
+<span id="L353" class="LineNr">353 </span>  <span class="Identifier">return</span> y:foo
+<span id="L354" class="LineNr">354 </span>]
+<span id="L355" class="LineNr">355 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L356" class="LineNr">356 </span>  <span class="Constant">1</span>:foo<span class="Special"> &lt;- </span>f
+<span id="L357" class="LineNr">357 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo<span class="Delimiter">,</span> <span class="Constant">x:offset</span>
+<span id="L358" class="LineNr">358 </span>  <span class="Constant">4</span>:&amp;:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo<span class="Delimiter">,</span> <span class="Constant">y:offset</span>
+<span id="L359" class="LineNr">359 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy *<span class="Constant">4</span>:&amp;:num
+<span id="L360" class="LineNr">360 </span>  <span class="Constant">1</span>:foo<span class="Special"> &lt;- </span><a href='001help.cc.html#L218'>put</a> <span class="Constant">1</span>:foo<span class="Delimiter">,</span> <span class="Constant">y:offset</span><span class="Delimiter">,</span> <span class="Constant">0</span>
+<span id="L361" class="LineNr">361 </span>  <span class="Constant">4</span>:&amp;:num<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
+<span id="L362" class="LineNr">362 </span>]
+<span id="L363" class="LineNr">363 </span><span class="traceContains">+mem: storing 34 in location 1</span>
+<span id="L364" class="LineNr">364 </span><span class="traceContains">+mem: storing 1006 in location 2</span>
+<span id="L365" class="LineNr">365 </span><span class="traceContains">+mem: storing 34 in location 3</span>
+<span id="L366" class="LineNr">366 </span><span class="Comment"># refcount of 1:foo shouldn't include any stray ones from f</span>
+<span id="L367" class="LineNr">367 </span><span class="traceContains">+run: {4: (&quot;address&quot; &quot;number&quot;)} &lt;- get {1: &quot;foo&quot;}, {y: &quot;offset&quot;}</span>
+<span id="L368" class="LineNr">368 </span><span class="traceContains">+mem: incrementing refcount of 1006: 1 -&gt; 2</span>
+<span id="L369" class="LineNr">369 </span><span class="Comment"># 1:foo wasn't abandoned/cleared</span>
+<span id="L370" class="LineNr">370 </span><span class="traceContains">+run: {5: &quot;number&quot;} &lt;- copy {4: (&quot;address&quot; &quot;number&quot;), &quot;lookup&quot;: ()}</span>
+<span id="L371" class="LineNr">371 </span><span class="traceContains">+mem: storing 12 in location 5</span>
+<span id="L372" class="LineNr">372 </span><span class="traceContains">+run: {1: &quot;foo&quot;} &lt;- <a href='001help.cc.html#L218'>put</a> {1: &quot;foo&quot;}, {y: &quot;offset&quot;}, {0: &quot;literal&quot;}</span>
+<span id="L373" class="LineNr">373 </span><span class="traceContains">+mem: decrementing refcount of 1006: 2 -&gt; 1</span>
+<span id="L374" class="LineNr">374 </span><span class="traceContains">+run: {4: (&quot;address&quot; &quot;number&quot;)} &lt;- copy {0: &quot;literal&quot;}</span>
+<span id="L375" class="LineNr">375 </span><span class="traceContains">+mem: decrementing refcount of 1006: 1 -&gt; 0</span>
+<span id="L376" class="LineNr">376 </span><span class="traceContains">+mem: automatically abandoning 1006</span>
+<span id="L377" class="LineNr">377 </span>
+<span id="L378" class="LineNr">378 </span><span class="Delimiter">:(scenario local_scope_claims_return_values_when_not_saved)</span>
+<span id="L379" class="LineNr">379 </span><span class="muRecipe">def</span> f [
+<span id="L380" class="LineNr">380 </span>  local-scope
+<span id="L381" class="LineNr">381 </span>  <span class="Normal">x</span>:&amp;:num<span class="Special"> &lt;- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
+<span id="L382" class="LineNr">382 </span>  <span class="Identifier">return</span> x:&amp;:num
+<span id="L383" class="LineNr">383 </span>]
+<span id="L384" class="LineNr">384 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
+<span id="L385" class="LineNr">385 </span>  f  <span class="Comment"># doesn't save result</span>
+<span id="L386" class="LineNr">386 </span>]
+<span id="L387" class="LineNr">387 </span><span class="Comment"># x reclaimed</span>
+<span id="L388" class="LineNr">388 </span><span class="traceContains">+mem: automatically abandoning 1004</span>
+<span id="L389" class="LineNr">389 </span><span class="Comment"># f's local scope reclaimed</span>
+<span id="L390" class="LineNr">390 </span><span class="traceContains">+mem: automatically abandoning 1000</span>
+<span id="L391" class="LineNr">391 </span>
+<span id="L392" class="LineNr">392 </span><span class="SalientComment">//:: all recipes must set default-space one way or another</span>
+<span id="L393" class="LineNr">393 </span>
+<span id="L394" class="LineNr">394 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+<span id="L395" class="LineNr">395 </span><span class="Normal">bool</span> Hide_missing_default_space_errors = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L396" class="LineNr">396 </span><span class="Delimiter">:(before &quot;End Checks&quot;)</span>
+<span id="L397" class="LineNr">397 </span>Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>check_default_space<span class="Delimiter">);</span>  <span class="Comment">// idempotent</span>
+<span id="L398" class="LineNr">398 </span><span class="Delimiter">:(code)</span>
+<span id="L399" class="LineNr">399 </span><span class="Normal">void</span> check_default_space<span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L400" class="LineNr">400 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>Hide_missing_default_space_errors<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// skip previous core tests; this is only for Mu code</span>
+<span id="L401" class="LineNr">401 </span>  <span class="Normal">const</span> recipe&amp; caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
+<span id="L402" class="LineNr">402 </span>  <span class="Comment">// End check_default_space Special-cases</span>
+<span id="L403" class="LineNr">403 </span>  <span class="Comment">// assume recipes with only numeric addresses know what they're doing (usually tests)</span>
+<span id="L404" class="LineNr">404 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_non_special_name<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L405" class="LineNr">405 </span>  <a href='003trace.cc.html#L171'>trace</a><span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;--- check that <a href='010vm.cc.html#L19'>recipe</a> &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; sets default-space&quot;</span> &lt;&lt; <a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>
+<span id="L406" class="LineNr">406 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+<span id="L407" class="LineNr">407 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span>
+<span id="L408" class="LineNr">408 </span>      || caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != <span class="Constant">&quot;default-space&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L409" class="LineNr">409 </span>    <a href='003trace.cc.html#L178'>raise</a> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; does not seem to start with default-space or local-scope</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>
+<span id="L410" class="LineNr">410 </span>  <span class="Delimiter">}</span>
+<span id="L411" class="LineNr">411 </span><span class="Delimiter">}</span>
+<span id="L412" class="LineNr">412 </span><span class="Delimiter">:(after &quot;Load Mu Prelude&quot;)</span>
+<span id="L413" class="LineNr">413 </span>Hide_missing_default_space_errors = <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L414" class="LineNr">414 </span><span class="Delimiter">:(after &quot;Test Runs&quot;)</span>
+<span id="L415" class="LineNr">415 </span>Hide_missing_default_space_errors = <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L416" class="LineNr">416 </span><span class="Delimiter">:(after &quot;Running Main&quot;)</span>
+<span id="L417" class="LineNr">417 </span>Hide_missing_default_space_errors = <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L418" class="LineNr">418 </span>
+<span id="L419" class="LineNr">419 </span><span class="Delimiter">:(code)</span>
+<span id="L420" class="LineNr">420 </span><span class="Normal">bool</span> contains_non_special_name<span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L421" class="LineNr">421 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;string<span class="Delimiter">,</span> <span class="Normal">int</span>&gt;::iterator p = Name[r]<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != Name[r]<span class="Delimiter">.</span><a href='003trace.cc.html#L195'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L422" class="LineNr">422 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+<span id="L423" class="LineNr">423 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">&quot;stash_&quot;</span><span class="Delimiter">)</span> == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// generated by rewrite_stashes_to_text (cross-layer)</span>
+<span id="L424" class="LineNr">424 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!is_special_name<span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">))</span>
+<span id="L425" class="LineNr">425 </span>      <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L426" class="LineNr">426 </span>  <span class="Delimiter">}</span>
+<span id="L427" class="LineNr">427 </span>  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L428" class="LineNr">428 </span><span class="Delimiter">}</span>
+<span id="L429" class="LineNr">429 </span>
+<span id="L430" class="LineNr">430 </span><span class="Comment">// reagent comparison -- only between reagents in a single recipe</span>
+<span id="L431" class="LineNr">431 </span><span class="Normal">bool</span> <span class="Normal">operator</span>==<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; a<span class="Delimiter">,</span> <span class="Normal">const</span> reagent&amp; b<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L432" class="LineNr">432 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>a<span class="Delimiter">.</span>name != b<span class="Delimiter">.</span>name<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L433" class="LineNr">433 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>property<span class="Delimiter">(</span>a<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">)</span> != property<span class="Delimiter">(</span>b<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span id="L434" class="LineNr">434 </span>  <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+<span id="L435" class="LineNr">435 </span><span class="Delimiter">}</span>
+<span id="L436" class="LineNr">436 </span>
+<span id="L437" class="LineNr">437 </span><span class="Normal">bool</span> <span class="Normal">operator</span>&lt;<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; a<span class="Delimiter">,</span> <span class="Normal">const</span> reagent&amp; b<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+<span id="L438" class="LineNr">438 </span>  <span class="Normal">int</span> aspace = <span class="Constant">0</span><span class="Delimiter">,</span> bspace = <span class="Constant">0</span><span class="Delimiter">;</span>
+<span id="L439" class="LineNr">439 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>a<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">))</span> aspace = <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>property<span class="Delimiter">(</span>a<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">)-&gt;</span>value<span class="Delimiter">);</span>
+<span id="L440" class="LineNr">440 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>b<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">))</span> bspace = <a href='002test.cc.html#L92'>to_integer</a><span class="Delimiter">(</span>property<span class="Delimiter">(</span>b<span class="Delimiter">,</span> <span class="Constant">&quot;space&quot;</span><span class="Delimiter">)-&gt;</span>value<span class="Delimiter">);</span>
+<span id="L441" class="LineNr">441 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>aspace != bspace<span class="Delimiter">)</span> <span class="Identifier">return</span> aspace &lt; bspace<span class="Delimiter">;</span>
+<span id="L442" class="LineNr">442 </span>  <span class="Identifier">return</span> a<span class="Delimiter">.</span>name &lt; b<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
+<span id="L443" class="LineNr">443 </span><span class="Delimiter">}</span>
 </pre>
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