Viewing file:  20030731-1.c (1.46 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-dom2 -std=gnu89" } */
extern void abort (void);
struct rtx_def;
typedef struct rtx_def *rtx;
struct rtvec_def;
typedef struct rtvec_def *rtvec;
union tree_node;
typedef union tree_node *tree;
struct rtx_def
{
int code;
int mode;
unsigned int in_struct:1;
};
struct tree_common
{
int code;
};
struct tree_decl
{
rtx rtl;
};
union tree_node
{
struct tree_common common;
struct tree_decl decl;
};
rtx
store_expr (exp, target, want_value)
tree exp;
rtx target;
int want_value;
{
if (exp->common.code == 42)
abort ();
else if (queued_subexp_p (target))
{
blah (target->mode);
if (target->code)
abort ();
}
else
{
if (target->code && (__extension__({target;})->in_struct));
}
if ((target != (exp->decl.rtl
? (exp->decl.rtl
? exp->decl.rtl
: (make_decl_rtl (exp, 0), exp->decl.rtl))
: 0))
&& expr_size (exp))
;
}
/* All paths to the test "target != 0" occurring in the final IF statement
dereference target. Thus target can not have the value zero at that
point and the test should have been eliminated. */
/* ??? The dominator walker (A) doesn't merge this data at joins and
(B) only looks at immediate dominators, and only queued_subexp_p
immediately dominates the comparison in question. We need something
stronger. */
/* { dg-final { scan-tree-dump-times "target.*!= 0" 0 "dom2" { xfail *-*-* } } } */
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