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re PR rtl-optimization/56903 (gcc is 4.8.0 fails to compile netdev.c from the linux kernel [internal compiler error: Maximum number of LRA constraint passes is achieved]) 

2013-04-12  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/56903
	* config/i386/i386.c (ix86_hard_regno_mode_ok): Add
	lra_in_progress for return.

2013-04-12  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/56903
	* gcc.target/i386/pr56903.c: New test.

From-SVN: r197927
This commit is contained in:
Vladimir Makarov 2013-04-12 17:09:10 +00:00 committed by Vladimir Makarov
parent 9a946fd66c
commit fafb9b1865
4 changed files with 34 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2013-04-12 Vladimir Makarov <vmakarov@redhat.com>
PR target/56903
* config/i386/i386.c (ix86_hard_regno_mode_ok): Add
lra_in_progress for return.
2013-04-12 Greta Yorsh <Greta.Yorsh@arm.com>
* config/arm/arm.md (mov_scc,mov_negscc,mov_notscc): Convert

5
gcc/config/i386/i386.c
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@ -33976,6 +33976,11 @@ ix86_hard_regno_mode_ok (int regno, enum machine_mode mode)
return true;
if (!TARGET_PARTIAL_REG_STALL)
return true;
/* LRA checks if the hard register is OK for the given mode.
QImode values can live in non-QI regs, so we allow all
registers here. */
if (lra_in_progress)
return true;
return !can_create_pseudo_p ();
}
/* We handle both integer and floats in the general purpose registers. */

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2013-04-12 Vladimir Makarov <vmakarov@redhat.com>
PR target/56903
* gcc.target/i386/pr56903.c: New test.
2013-04-12 Janus Weil <janus@gcc.gnu.org>
PR fortran/56261

18
gcc/testsuite/gcc.target/i386/pr56903.c Normal file
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@ -0,0 +1,18 @@
/* PR rtl-optimization/56903 */
/* { dg-do compile } */
/* { dg-options "-Os" } */
/* { dg-additional-options "-march=pentium3" { target ia32 } } */
int a, *b, c;
struct S { int s : 1; } *fn1 (void);
extern int fn3 (void), fn4 (int *);
void
fn2 (void)
{
int e = fn3 ();
char f = c + fn1 ()->s * 4;
if (*b && f == e)
a = *b;
fn4 (b);
}