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testcase for shared DR alignment

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This adds a reduced C testcase from libgomp.fortran/examples-4/target-1.f90
and libgomp.fortran/examples-4/target_data-1.f90 FAILs, showing a case
of SLP instance stmt sharing that affects the shared dataref alignment
info.

2020-06-12  Richard Biener  <rguenther@suse.de>

	* gcc.dg/vect/bb-slp-44.c: New testcase.
This commit is contained in:
Richard Biener 2020-06-12 13:02:56 +02:00
parent d30846a02e
commit 4544793ef6
1 changed files with 41 additions and 0 deletions
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41
gcc/testsuite/gcc.dg/vect/bb-slp-44.c Normal file
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/* { dg-do run } */
typedef struct {
unsigned long a;
unsigned long b;
unsigned long c;
} data_o;
typedef struct {
unsigned long c;
unsigned long gap1;
unsigned long b;
unsigned long gap2;
unsigned long a;
unsigned long x;
} data_i;
volatile unsigned long gx;
void __attribute__((noipa))
bar(unsigned long x)
{
gx = x;
}
void __attribute__((noipa))
foo(data_o *o, data_i *i)
{
o->a = i->a;
o->b = i->b;
o->c = i->c;
bar (i->x);
}
int main()
{
unsigned long data[9];
if ((__UINTPTR_TYPE__)data & 15 != 0)
foo ((data_o *)&data[6], (data_i *)data);
else
foo ((data_o *)data, (data_i *)&data[3]);
return 0;
}