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re PR tree-optimization/61572 (ICE: in assign_by_spills, at lra-assigns.c:1335)

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2014-06-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/61572
	* tree-ssa-sink.c (statement_sink_location): Do not sink
	loads from hard registers.

	* gcc.target/i386/pr61572.c: New testcase.

From-SVN: r211933
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Richard Biener 2014-06-24 10:35:30 +00:00 committed by Richard Biener
parent 56ad0e3820
commit 9975327711
4 changed files with 63 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-06-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/61572
* tree-ssa-sink.c (statement_sink_location): Do not sink
loads from hard registers.
2014-06-24 Jakub Jelinek <jakub@redhat.com>
* gimplify.c (gimplify_omp_for): For #pragma omp for simd iterator

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2014-06-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/61572
* gcc.target/i386/pr61572.c: New testcase.
2014-06-24 Jakub Jelinek <jakub@redhat.com>
* gfortran.dg/gomp/udr2.f90 (f7, f9): Add !$omp parallel with

46
gcc/testsuite/gcc.target/i386/pr61572.c Normal file
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@ -0,0 +1,46 @@
/* { dg-do compile } */
/* { dg-options "-O2" } */
struct autofs_sb_info
{
int exp_timeout;
};
void *f;
int g;
static int fn1 (struct autofs_sb_info *p1)
{
int a, b;
a = (
{
register __typeof__(0) c
#if defined __x86_64__
asm("rdx")
#endif
;
b = c;
int d;
__typeof__(0) e;
e = p1->exp_timeout / 1000;
switch (0)
default:
asm("" : "=a"(d) : "0"(e), ""(0));
d;
});
if (a)
return 1;
if (b)
p1->exp_timeout = 0;
return 0;
}
int fn2 ()
{
struct autofs_sb_info *h = f;
switch (g)
{
case 0 ?:
0 : return fn1 (h);
default:
return 0;
}
}

6
gcc/tree-ssa-sink.c
View File

@ -374,6 +374,12 @@ statement_sink_location (gimple stmt, basic_block frombb,
nearest to commondom. */
if (gimple_vuse (stmt))
{
/* Do not sink loads from hard registers. */
if (gimple_assign_single_p (stmt)
&& TREE_CODE (gimple_assign_rhs1 (stmt)) == VAR_DECL
&& DECL_HARD_REGISTER (gimple_assign_rhs1 (stmt)))
return false;
imm_use_iterator imm_iter;
use_operand_p use_p;
basic_block found = NULL;