asan.c (handle_builtin_alloca): Deal with all alloca variants.

[gcc.git] / gcc / data-streamer-out.c

diff --git a/gcc/data-streamer-out.c b/gcc/data-streamer-out.c
index 8eefd2f855e7f356702271ebd652da741a6a9f85..1e8feb1e74a44171730d7dcb0169d1d7ddbf3ecc 100644 (file)
--- a/gcc/data-streamer-out.c
+++ b/gcc/data-streamer-out.c
@@ -1,7 +1,7 @@
 /* Routines for saving various data types to a file stream.  This deals
    with various data types like strings, integers, enums, etc.
 
-   Copyright (C) 2011-2014 Free Software Foundation, Inc.
+   Copyright (C) 2011-2017 Free Software Foundation, Inc.
    Contributed by Diego Novillo <dnovillo@google.com>
 
 This file is part of GCC.
@@ -23,22 +23,62 @@ along with GCC; see the file COPYING3.  If not see
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
+#include "backend.h"
 #include "tree.h"
-#include "basic-block.h"
-#include "tree-ssa-alias.h"
-#include "internal-fn.h"
-#include "gimple-expr.h"
-#include "is-a.h"
 #include "gimple.h"
+#include "cgraph.h"
 #include "data-streamer.h"
 
+
+/* Adds a new block to output stream OBS.  */
+
+void
+lto_append_block (struct lto_output_stream *obs)
+{
+  struct lto_char_ptr_base *new_block;
+
+  gcc_assert (obs->left_in_block == 0);
+
+  if (obs->first_block == NULL)
+    {
+      /* This is the first time the stream has been written
+        into.  */
+      obs->block_size = 1024;
+      new_block = (struct lto_char_ptr_base*) xmalloc (obs->block_size);
+      obs->first_block = new_block;
+    }
+  else
+    {
+      struct lto_char_ptr_base *tptr;
+      /* Get a new block that is twice as big as the last block
+        and link it into the list.  */
+      obs->block_size *= 2;
+      new_block = (struct lto_char_ptr_base*) xmalloc (obs->block_size);
+      /* The first bytes of the block are reserved as a pointer to
+        the next block.  Set the chain of the full block to the
+        pointer to the new block.  */
+      tptr = obs->current_block;
+      tptr->ptr = (char *) new_block;
+    }
+
+  /* Set the place for the next char at the first position after the
+     chain to the next block.  */
+  obs->current_pointer
+    = ((char *) new_block) + sizeof (struct lto_char_ptr_base);
+  obs->current_block = new_block;
+  /* Null out the newly allocated block's pointer to the next block.  */
+  new_block->ptr = NULL;
+  obs->left_in_block = obs->block_size - sizeof (struct lto_char_ptr_base);
+}
+
+
 /* Return index used to reference STRING of LEN characters in the string table
    in OB.  The string might or might not include a trailing '\0'.
    Then put the index onto the INDEX_STREAM.  
    When PERSISTENT is set, the string S is supposed to not change during
    duration of the OB and thus OB can keep pointer into it.  */
 
-unsigned
+static unsigned
 streamer_string_index (struct output_block *ob, const char *s, unsigned int len,
                       bool persistent)
 {
@@ -71,7 +111,7 @@ streamer_string_index (struct output_block *ob, const char *s, unsigned int len,
       new_slot->slot_num = start;
       *slot = new_slot;
       streamer_write_uhwi_stream (string_stream, len);
-      lto_output_data_stream (string_stream, string, len);
+      streamer_write_data_stream (string_stream, string, len);
       return start + 1;
     }
   else
@@ -300,7 +340,64 @@ streamer_write_hwi_stream (struct lto_output_stream *obs, HOST_WIDE_INT work)
 void
 streamer_write_gcov_count_stream (struct lto_output_stream *obs, gcov_type work)
 {
-  gcc_assert (work >= 0);
   gcc_assert ((HOST_WIDE_INT) work == work);
   streamer_write_hwi_stream (obs, work);
 }
+
+/* Write raw DATA of length LEN to the output block OB.  */
+
+void
+streamer_write_data_stream (struct lto_output_stream *obs, const void *data,
+                           size_t len)
+{
+  while (len)
+    {
+      size_t copy;
+
+      /* No space left.  */
+      if (obs->left_in_block == 0)
+       lto_append_block (obs);
+
+      /* Determine how many bytes to copy in this loop.  */
+      if (len <= obs->left_in_block)
+       copy = len;
+      else
+       copy = obs->left_in_block;
+
+      /* Copy the data and do bookkeeping.  */
+      memcpy (obs->current_pointer, data, copy);
+      obs->current_pointer += copy;
+      obs->total_size += copy;
+      obs->left_in_block -= copy;
+      data = (const char *) data + copy;
+      len -= copy;
+    }
+}
+
+/* Emit the physical representation of wide_int VAL to output block OB.  */
+
+void
+streamer_write_wide_int (struct output_block *ob, const wide_int &val)
+{
+  int len = val.get_len ();
+
+  streamer_write_uhwi (ob, val.get_precision ());
+  streamer_write_uhwi (ob, len);
+  for (int i = 0; i < len; i++)
+    streamer_write_hwi (ob, val.elt (i));
+}
+
+/* Emit the physical representation of widest_int W to output block OB.  */
+
+void
+streamer_write_widest_int (struct output_block *ob,
+                          const widest_int &w)
+{
+  int len = w.get_len ();
+
+  streamer_write_uhwi (ob, w.get_precision ());
+  streamer_write_uhwi (ob, len);
+  for (int i = 0; i < len; i++)
+    streamer_write_hwi (ob, w.elt (i));
+}
+