Merge from pch-branch up to tag pch-commit-20020603.

From-SVN: r54232

1 files changed, 59 insertions, 13 deletions

diff --git a/gcc/varray.c b/gcc/varray.c
index eef2234..51e3e8b 100644
--- a/gcc/varray.c
+++ b/gcc/varray.c
@@ -22,27 +22,59 @@
 #include "config.h"
 #include "errors.h"
 #include "system.h"
-#include "rtl.h"
-#include "tree.h"
-#include "bitmap.h"
 #include "varray.h"
+#include "ggc.h"
 
 #define VARRAY_HDR_SIZE (sizeof (struct varray_head_tag) - sizeof (varray_data))
 
+static const size_t element_size[NUM_VARRAY_DATA] = {
+  sizeof (char),
+  sizeof (unsigned char),
+  sizeof (short),
+  sizeof (unsigned short),
+  sizeof (int),
+  sizeof (unsigned int),
+  sizeof (long),
+  sizeof (unsigned long),
+  sizeof (HOST_WIDE_INT),
+  sizeof (unsigned HOST_WIDE_INT),
+  sizeof (PTR),
+  sizeof (char *),
+  sizeof (struct rtx_def *),
+  sizeof (struct rtvec_def *),
+  sizeof (union tree_node *),
+  sizeof (struct bitmap_head_def *),
+  sizeof (struct reg_info_def *),
+  sizeof (struct const_equiv_data),
+  sizeof (struct basic_block_def *),
+  sizeof (struct elt_list *)
+};
+
+static const int uses_ggc[NUM_VARRAY_DATA] = {
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* unsigned HOST_WIDE_INT */
+  1, /* PTR */
+  1, 1, 1, 1, 1, /* bitmap_head_def */
+  0, 0, 0, 1
+};
+
 /* Allocate a virtual array with NUM_ELEMENT elements, each of which is
    ELEMENT_SIZE bytes long, named NAME.  Array elements are zeroed.  */
 varray_type
-varray_init (num_elements, element_size, name)
+varray_init (num_elements, element_kind, name)
      size_t num_elements;
-     size_t element_size;
+     enum varray_data_enum element_kind;
      const char *name;
 {
-  size_t data_size = num_elements * element_size;
-  varray_type ptr = (varray_type) xcalloc (VARRAY_HDR_SIZE + data_size, 1);
+  size_t data_size = num_elements * element_size[element_kind];
+  varray_type ptr;
+  if (uses_ggc [element_kind])
+    ptr = (varray_type) ggc_alloc_cleared (VARRAY_HDR_SIZE + data_size);
+  else
+    ptr = (varray_type) xcalloc (VARRAY_HDR_SIZE + data_size, 1);
 
   ptr->num_elements = num_elements;
   ptr->elements_used = 0;
-  ptr->element_size = element_size;
+  ptr->type = element_kind;
   ptr->name = name;
   return ptr;
 }
@@ -58,11 +90,14 @@ varray_grow (va, n)
 
   if (n != old_elements)
     {
-      size_t element_size = va->element_size;
-      size_t old_data_size = old_elements * element_size;
-      size_t data_size = n * element_size;
-
-      va = (varray_type) xrealloc ((char *) va, VARRAY_HDR_SIZE + data_size);
+      size_t elem_size = element_size[va->type];
+      size_t old_data_size = old_elements * elem_size;
+      size_t data_size = n * elem_size;
+
+      if (uses_ggc[va->type])
+	va = (varray_type) ggc_realloc (va, VARRAY_HDR_SIZE + data_size);
+      else
+	va = (varray_type) xrealloc ((char *) va, VARRAY_HDR_SIZE + data_size);
       va->num_elements = n;
       if (n > old_elements)
 	memset (&va->data.c[old_data_size], 0, data_size - old_data_size);
@@ -71,6 +106,17 @@ varray_grow (va, n)
   return va;
 }
 
+/* Reset a varray to its original state.  */
+void
+varray_clear (va)
+     varray_type va;
+{
+  size_t data_size = element_size[va->type] * va->num_elements;
+
+  memset (va->data.c, 0, data_size);
+  va->elements_used = 0;
+}
+
 /* Check the bounds of a varray access.  */
 
 #if defined ENABLE_CHECKING && (GCC_VERSION >= 2007)