#include "basic-block.h"
#include "output.h"
#include "timevar.h"
-#include "expr.h"
#include "ggc.h"
#include "langhooks.h"
#include "flags.h"
#include "function.h"
-#include "diagnostic.h"
#include "tree-pretty-print.h"
#include "tree-dump.h"
#include "gimple.h"
|| TREE_CODE (t) == PARM_DECL
|| TREE_CODE (t) == RESULT_DECL);
- ann = GGC_CNEW (struct var_ann_d);
+ ann = ggc_alloc_cleared_var_ann_d ();
*DECL_VAR_ANN_PTR (t) = ann;
return ann;
void
dump_variable (FILE *file, tree var)
{
- var_ann_t ann;
-
if (TREE_CODE (var) == SSA_NAME)
{
if (POINTER_TYPE_P (TREE_TYPE (var)))
print_generic_expr (file, var, dump_flags);
- ann = var_ann (var);
-
fprintf (file, ", UID D.%u", (unsigned) DECL_UID (var));
if (DECL_PT_UID (var) != DECL_UID (var))
fprintf (file, ", PT-UID D.%u", (unsigned) DECL_PT_UID (var));
if (TREE_THIS_VOLATILE (var))
fprintf (file, ", is volatile");
- if (ann && ann->noalias_state == NO_ALIAS)
- fprintf (file, ", NO_ALIAS (does not alias other NO_ALIAS symbols)");
- else if (ann && ann->noalias_state == NO_ALIAS_GLOBAL)
- fprintf (file, ", NO_ALIAS_GLOBAL (does not alias other NO_ALIAS symbols"
- " and global vars)");
- else if (ann && ann->noalias_state == NO_ALIAS_ANYTHING)
- fprintf (file, ", NO_ALIAS_ANYTHING (does not alias any other symbols)");
-
if (cfun && gimple_default_def (cfun, var))
{
fprintf (file, ", default def: ");
struct tree_decl_minimal in;
in.uid = uid;
h = (tree) htab_find_with_hash (gimple_referenced_vars (cfun), &in, uid);
- gcc_assert (h || uid == 0);
return h;
}
&& maxsize != -1)
{
tree stype = TREE_TYPE (TREE_OPERAND (exp, 0));
- tree next = TREE_CHAIN (field);
+ tree next = DECL_CHAIN (field);
while (next && TREE_CODE (next) != FIELD_DECL)
- next = TREE_CHAIN (next);
+ next = DECL_CHAIN (next);
if (!next
|| TREE_CODE (stype) != RECORD_TYPE)
{
case VIEW_CONVERT_EXPR:
break;
+ case MEM_REF:
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR)
+ {
+ if (integer_zerop (TREE_OPERAND (exp, 1)))
+ exp = TREE_OPERAND (TREE_OPERAND (exp, 0), 0);
+ else
+ {
+ double_int off = mem_ref_offset (exp);
+ off = double_int_lshift (off,
+ BITS_PER_UNIT == 8
+ ? 3 : exact_log2 (BITS_PER_UNIT),
+ HOST_BITS_PER_DOUBLE_INT, true);
+ off = double_int_add (off, shwi_to_double_int (bit_offset));
+ if (double_int_fits_in_shwi_p (off))
+ {
+ bit_offset = double_int_to_shwi (off);
+ exp = TREE_OPERAND (TREE_OPERAND (exp, 0), 0);
+ }
+ }
+ }
+ goto done;
+
+ case TARGET_MEM_REF:
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (TMR_BASE (exp)) == ADDR_EXPR)
+ {
+ /* Via the variable index or index2 we can reach the
+ whole object. */
+ if (TMR_INDEX (exp) || TMR_INDEX2 (exp))
+ {
+ exp = TREE_OPERAND (TMR_BASE (exp), 0);
+ bit_offset = 0;
+ maxsize = -1;
+ goto done;
+ }
+ if (integer_zerop (TMR_OFFSET (exp)))
+ exp = TREE_OPERAND (TMR_BASE (exp), 0);
+ else
+ {
+ double_int off = mem_ref_offset (exp);
+ off = double_int_lshift (off,
+ BITS_PER_UNIT == 8
+ ? 3 : exact_log2 (BITS_PER_UNIT),
+ HOST_BITS_PER_DOUBLE_INT, true);
+ off = double_int_add (off, shwi_to_double_int (bit_offset));
+ if (double_int_fits_in_shwi_p (off))
+ {
+ bit_offset = double_int_to_shwi (off);
+ exp = TREE_OPERAND (TMR_BASE (exp), 0);
+ }
+ }
+ }
+ goto done;
+
default:
goto done;
}
return exp;
}
+/* Returns the base object and a constant BITS_PER_UNIT offset in *POFFSET that
+ denotes the starting address of the memory access EXP.
+ Returns NULL_TREE if the offset is not constant or any component
+ is not BITS_PER_UNIT-aligned. */
+
+tree
+get_addr_base_and_unit_offset (tree exp, HOST_WIDE_INT *poffset)
+{
+ HOST_WIDE_INT byte_offset = 0;
+
+ /* Compute cumulative byte-offset for nested component-refs and array-refs,
+ and find the ultimate containing object. */
+ while (1)
+ {
+ switch (TREE_CODE (exp))
+ {
+ case BIT_FIELD_REF:
+ return NULL_TREE;
+
+ case COMPONENT_REF:
+ {
+ tree field = TREE_OPERAND (exp, 1);
+ tree this_offset = component_ref_field_offset (exp);
+ HOST_WIDE_INT hthis_offset;
+
+ if (!this_offset
+ || TREE_CODE (this_offset) != INTEGER_CST
+ || (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+ % BITS_PER_UNIT))
+ return NULL_TREE;
+
+ hthis_offset = TREE_INT_CST_LOW (this_offset);
+ hthis_offset += (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+ / BITS_PER_UNIT);
+ byte_offset += hthis_offset;
+ }
+ break;
+
+ case ARRAY_REF:
+ case ARRAY_RANGE_REF:
+ {
+ tree index = TREE_OPERAND (exp, 1);
+ tree low_bound, unit_size;
+
+ /* If the resulting bit-offset is constant, track it. */
+ if (TREE_CODE (index) == INTEGER_CST
+ && (low_bound = array_ref_low_bound (exp),
+ TREE_CODE (low_bound) == INTEGER_CST)
+ && (unit_size = array_ref_element_size (exp),
+ TREE_CODE (unit_size) == INTEGER_CST))
+ {
+ HOST_WIDE_INT hindex = TREE_INT_CST_LOW (index);
+
+ hindex -= TREE_INT_CST_LOW (low_bound);
+ hindex *= TREE_INT_CST_LOW (unit_size);
+ byte_offset += hindex;
+ }
+ else
+ return NULL_TREE;
+ }
+ break;
+
+ case REALPART_EXPR:
+ break;
+
+ case IMAGPART_EXPR:
+ byte_offset += TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (exp)));
+ break;
+
+ case VIEW_CONVERT_EXPR:
+ break;
+
+ case MEM_REF:
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR)
+ {
+ if (!integer_zerop (TREE_OPERAND (exp, 1)))
+ {
+ double_int off = mem_ref_offset (exp);
+ gcc_assert (off.high == -1 || off.high == 0);
+ byte_offset += double_int_to_shwi (off);
+ }
+ exp = TREE_OPERAND (TREE_OPERAND (exp, 0), 0);
+ }
+ goto done;
+
+ case TARGET_MEM_REF:
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (TMR_BASE (exp)) == ADDR_EXPR)
+ {
+ if (TMR_INDEX (exp) || TMR_INDEX2 (exp))
+ return NULL_TREE;
+ if (!integer_zerop (TMR_OFFSET (exp)))
+ {
+ double_int off = mem_ref_offset (exp);
+ gcc_assert (off.high == -1 || off.high == 0);
+ byte_offset += double_int_to_shwi (off);
+ }
+ exp = TREE_OPERAND (TMR_BASE (exp), 0);
+ }
+ goto done;
+
+ default:
+ goto done;
+ }
+
+ exp = TREE_OPERAND (exp, 0);
+ }
+done:
+
+ *poffset = byte_offset;
+ return exp;
+}
+
/* Returns true if STMT references an SSA_NAME that has
SSA_NAME_OCCURS_IN_ABNORMAL_PHI set, otherwise false. */
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