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re PR tree-optimization/42614 (FRE optimizes away valid code after IPA inlining) 

2010-01-05  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/42614
	* gcc.c-torture/execute/pr42614.c: New testcase.

From-SVN: r155647
This commit is contained in:
Richard Guenther 2010-01-05 13:42:40 +00:00 committed by Richard Biener
parent bc3c12a29c
commit 82aee9233b
2 changed files with 73 additions and 0 deletions
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5
gcc/testsuite/ChangeLog
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2010-01-05 Richard Guenther <rguenther@suse.de>
PR tree-optimization/42614
* gcc.c-torture/execute/pr42614.c: New testcase.
2010-01-05 Eric Fisher <joefoxreal@gmail.com> 2010-01-05 Eric Fisher <joefoxreal@gmail.com>
* gcc.dg/pr12603.c: Remove -Wunreachable-code from dg-options. * gcc.dg/pr12603.c: Remove -Wunreachable-code from dg-options.

68
gcc/testsuite/gcc.c-torture/execute/pr42614.c Normal file
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extern void *malloc(__SIZE_TYPE__);
extern void abort(void);
extern void free(void *);
typedef struct SEntry
{
unsigned char num;
} TEntry;
typedef struct STable
{
TEntry data[2];
} TTable;
TTable *init ()
{
return malloc(sizeof(TTable));
}
void
expect_func (int a, unsigned char *b) __attribute__ ((noinline));
static inline void
inlined_wrong (TEntry *entry_p, int flag);
void
inlined_wrong (TEntry *entry_p, int flag)
{
unsigned char index;
entry_p->num = 0;
if (flag == 0)
abort();
for (index = 0; index < 1; index++)
entry_p->num++;
if (!entry_p->num)
{
abort();
}
}
void
expect_func (int a, unsigned char *b)
{
if (abs ((a == 0)))
abort ();
if (abs ((b == 0)))
abort ();
}
int
main ()
{
unsigned char index = 0;
TTable *table_p = init();
TEntry work;
inlined_wrong (&(table_p->data[1]), 1);
expect_func (1, &index);
inlined_wrong (&work, 1);
free (table_p);
return 0;
}