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re PR middle-end/28776 (dwarf2out.c:2160: ICE: in build_polynomial_chrec, at tree-chrec.h:108)

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2006-08-22  Richard Guenther  <rguenther@suse.de>

	PR middle-end/28776
	* tree-scalar-evolution.c (fold_used_pointer): Add at_stmt
	parameter.  Convert arguments to arithmetic expression to the
	chrecs type.
	(analyze_scalar_evolution_1): Adjust caller.

	* gcc.c-torture/compile/pr28776-1.c: New testcase.
	* gcc.c-torture/compile/pr28776-2.c: Likewise.

From-SVN: r116326
This commit is contained in:
Richard Guenther 2006-08-22 16:26:32 +00:00 committed by Richard Biener
parent 1f6c68eda5
commit 8a613caeb3
5 changed files with 65 additions and 5 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2006-08-22 Richard Guenther <rguenther@suse.de>
PR middle-end/28776
* tree-scalar-evolution.c (fold_used_pointer): Add at_stmt
parameter. Convert arguments to arithmetic expression to the
chrecs type.
(analyze_scalar_evolution_1): Adjust caller.
2006-08-22 Jan Hubicka <jh@suse.cz>
Patch by Paolo Bonzini

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2006-08-22 Richard Guenther <rguenther@suse.de>
PR middle-end/28776
* gcc.c-torture/compile/pr28776-1.c: New testcase.
* gcc.c-torture/compile/pr28776-2.c: Likewise.
2006-08-21 Mark Shinwell <shinwell@codesourcery.com>
* g++.dg/eh/arm-vfp-unwind.C: Correct order of DejaGNU directives.

16
gcc/testsuite/gcc.c-torture/compile/pr28776-1.c Normal file
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@ -0,0 +1,16 @@
typedef struct dw_fde_struct
{
int decl;
} *dw_fde_ref;
dw_fde_ref fde_table;
unsigned fde_table_in_use;
void output_call_frame_info (void)
{
unsigned int i;
dw_fde_ref fde;
for (i = 0; i < fde_table_in_use; i++)
{
fde = &fde_table[i];
tree_contains_struct_check_failed (fde_table[i].decl);
}
}

26
gcc/testsuite/gcc.c-torture/compile/pr28776-2.c Normal file
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@ -0,0 +1,26 @@
typedef struct RangeCoder
{
unsigned char one_state[256];
} RangeCoder;
static inline void put_rac(RangeCoder *c, unsigned char* const state)
{
*state= c->one_state[*state];
}
typedef struct PlaneContext{
unsigned (*state)[32];
} PlaneContext;
static inline void put_symbol(RangeCoder *c, unsigned char *state)
{
int i;
const int e;
put_rac(c, state);
for(i=e-1; i>=0; i--)
put_rac(c, state+22+i);
}
int encode_line(void)
{
PlaneContext * const p;
RangeCoder * const c;
int a;
put_symbol(c, p->state[a]);
}

14
gcc/tree-scalar-evolution.c
View File

@ -1765,7 +1765,8 @@ pointer_offset_p (tree expr)
/* EXPR is a scalar evolution of a pointer that is dereferenced or used in
comparison. This means that it must point to a part of some object in
memory, which enables us to argue about overflows and possibly simplify
the EXPR. Returns the simplified value.
the EXPR. AT_STMT is the statement in which this conversion has to be
performed. Returns the simplified value.
Currently, for
@ -1820,7 +1821,7 @@ pointer_offset_p (tree expr)
bugs. */
static tree
fold_used_pointer (tree expr)
fold_used_pointer (tree expr, tree at_stmt)
{
tree op0, op1, new0, new1;
enum tree_code code = TREE_CODE (expr);
@ -1833,13 +1834,13 @@ fold_used_pointer (tree expr)
if (pointer_offset_p (op1))
{
new0 = fold_used_pointer (op0);
new0 = fold_used_pointer (op0, at_stmt);
new1 = fold_used_pointer_cast (op1);
}
else if (code == PLUS_EXPR && pointer_offset_p (op0))
{
new0 = fold_used_pointer_cast (op0);
new1 = fold_used_pointer (op1);
new1 = fold_used_pointer (op1, at_stmt);
}
else
return expr;
@ -1847,6 +1848,9 @@ fold_used_pointer (tree expr)
if (new0 == op0 && new1 == op1)
return expr;
new0 = chrec_convert (TREE_TYPE (expr), new0, at_stmt);
new1 = chrec_convert (TREE_TYPE (expr), new1, at_stmt);
if (code == PLUS_EXPR)
expr = chrec_fold_plus (TREE_TYPE (expr), new0, new1);
else
@ -1948,7 +1952,7 @@ analyze_scalar_evolution_1 (struct loop *loop, tree var, tree res)
if (POINTER_TYPE_P (type)
&& !automatically_generated_chrec_p (res)
&& pointer_used_p (var))
res = fold_used_pointer (res);
res = fold_used_pointer (res, def);
break;
case PHI_NODE: