Re: [PATCH 0/3] Enable pointer_query caching throughout.

[Martin Sebor <msebor@gmail.com>]

On 2/3/22 15:56, David Edelsohn wrote:
> This series of patches has exploded memory usage and I can no longer
> bootstrap GCC on AIX.
> 
> As with the Ranger problem exposed by Aldy's patch last September,
> something is not freeing memory.
> 
> Even on systems where GCC still bootstrap, this excessive memory usage
> severely damages GCC compile performance.

Does the change below by any chance make a difference?  (It's just
a hunch, I haven't tested it beyond quickly building stage 1 and
running a few tests.)

Martin


diff --git a/gcc/pointer-query.h b/gcc/pointer-query.h
index 4c725eeaf34..801a240c38d 100644
--- a/gcc/pointer-query.h
+++ b/gcc/pointer-query.h
@@ -164,9 +164,9 @@ class pointer_query
    struct cache_type
    {
      /* 1-based indices into cache.  */
-    vec<unsigned> indices;
+    auto_vec<unsigned> indices;
      /* The cache itself.  */
-    vec<access_ref> access_refs;
+    auto_vec<access_ref> access_refs;
    };

  public: