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New test.

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From-SVN: r35740
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Richard Henderson 2000-08-15 23:23:40 -07:00 committed by Richard Henderson
parent 3e626beb95
commit 2b8b1ab661
2 changed files with 74 additions and 0 deletions
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4
gcc/testsuite/ChangeLog
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2000-08-15 Richard Henderson <rth@cygnus.com>
* gcc.c-torture/execute/20000815-1.c: New test.
2000-08-15 Joseph S. Myers <jsm28@cam.ac.uk>
* gcc.dg/c90-array-lval-2.c, gcc.dg/c90-const-expr-2.c,

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gcc/testsuite/gcc.c-torture/execute/20000815-1.c Normal file
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struct table_elt
{
void *exp;
struct table_elt *next_same_hash;
struct table_elt *prev_same_hash;
struct table_elt *next_same_value;
struct table_elt *prev_same_value;
struct table_elt *first_same_value;
struct table_elt *related_value;
int cost;
int mode;
char in_memory;
char in_struct;
char is_const;
char flag;
};
struct write_data
{
int sp : 1;
int var : 1;
int nonscalar : 1;
int all : 1;
};
int cse_rtx_addr_varies_p(void *);
void remove_from_table(struct table_elt *, int);
static struct table_elt *table[32];
void
invalidate_memory (writes)
struct write_data *writes;
{
register int i;
register struct table_elt *p, *next;
int all = writes->all;
int nonscalar = writes->nonscalar;
for (i = 0; i < 31; i++)
for (p = table[i]; p; p = next)
{
next = p->next_same_hash;
if (p->in_memory
&& (all
|| (nonscalar && p->in_struct)
|| cse_rtx_addr_varies_p (p->exp)))
remove_from_table (p, i);
}
}
int cse_rtx_addr_varies_p(void *x) { return 0; }
void remove_from_table(struct table_elt *x, int y) { abort (); }
int
main()
{
struct write_data writes;
struct table_elt elt;
__builtin_memset(&elt, 0, sizeof(elt));
elt.in_memory = 1;
table[0] = &elt;
__builtin_memset(&writes, 0, sizeof(writes));
writes.var = 1;
writes.nonscalar = 1;
invalidate_memory(&writes);
return 0;
}