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Handle -fipa-ra in reload_combine 

2015-06-08  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/66444
	* postreload.c (reload_combine): Use get_call_reg_set_usage instead of
	call_used_regs.

	* gcc.dg/pr66444.c: New test.

From-SVN: r224240
This commit is contained in:
Tom de Vries 2015-06-08 16:59:31 +00:00 committed by Tom de Vries
parent ef701bbe50
commit 97ded4cd20
4 changed files with 94 additions and 1 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2015-06-08 Tom de Vries <tom@codesourcery.com>
PR rtl-optimization/66444
* postreload.c (reload_combine): Use get_call_reg_set_usage instead of
call_used_regs.
2015-06-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66422

5
gcc/postreload.c
View File

@ -1352,9 +1352,12 @@ reload_combine (void)
if (CALL_P (insn))
{
rtx link;
HARD_REG_SET used_regs;
get_call_reg_set_usage (insn, &used_regs, call_used_reg_set);
for (r = 0; r < FIRST_PSEUDO_REGISTER; r++)
if (call_used_regs[r])
if (TEST_HARD_REG_BIT (used_regs, r))
{
reg_state[r].use_index = RELOAD_COMBINE_MAX_USES;
reg_state[r].store_ruid = reload_combine_ruid;

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2015-06-08 Tom de Vries <tom@codesourcery.com>
PR rtl-optimization/66444
* gcc.dg/pr66444.c: New test.
2015-06-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/66245

79
gcc/testsuite/gcc.dg/pr66444.c Normal file
View File

@ -0,0 +1,79 @@
/* { dg-do run } */
/* { dg-options "-O2 -fipa-ra" } */
extern void abort (void);
#if (__SIZEOF_LONG_LONG__ == __SIZEOF_POINTER__)
#define ADD_SUFFIX(a) a ## ULL
#elif (__SIZEOF_LONG__ == __SIZEOF_POINTER__)
#define ADD_SUFFIX(a) a ## UL
#elif (__SIZEOF_INT__ == __SIZEOF_POINTER__)
#define ADD_SUFFIX(a) a ## U
#else
#error Add target support here
#endif
#if __SIZEOF_POINTER__ <= 4
/* Use a 16 bit pointer to have a valid pointer for 16-bit to 31-bit pointer
architectures. Using sizeof, we cannot distinguish between 31-bit and 32-bit
pointer types, so we also handle the 32-bit pointer type case here. */
#define CONST_PTR ADD_SUFFIX (0x800)
#else
/* For x86_64 -m64, the problem reproduces with this 32-bit CONST_PTR, but not
with a 2-power below it. */
#define CONST_PTR ADD_SUFFIX (0x80000000)
#endif
int __attribute__((noinline, noclone))
bar (void)
{
return 1;
}
struct S
{
unsigned long p, q, r;
void *v;
};
struct S *s1;
struct S *s2;
void __attribute__((noinline, noclone))
fn2 (struct S *x)
{
s2 = x;
}
__attribute__((noinline, noclone)) void *
fn1 (struct S *x)
{
/* Just a statement to make it a non-const function. */
s1 = x;
return (void *)0;
}
int __attribute__((noinline, noclone))
baz (void)
{
struct S *x = (struct S *) CONST_PTR;
x += bar ();
fn1 (x);
fn2 (x);
return 0;
}
int
main (void)
{
baz ();
if (s2 != (((struct S *) CONST_PTR) + 1))
abort ();
return 0;
}