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re PR target/53346 (Bad if conversion in cptrf2 of rnflow.f90) 

2012-05-18  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/53346
	* tree-loop-distribution.c (ldist_gen): Make sure to apply
	builtin transform even when only a single partition with
	all reads/writes exists.

	* gcc.dg/tree-ssa/ldist-18.c: New testcase.
	* gcc.target/i386/incoming-10.c: Adjust.
	* gcc.target/i386/incoming-11.c: Likewise.
	* gcc.target/i386/pr46295.c: Likewise.

From-SVN: r187655
This commit is contained in:
Richard Guenther 2012-05-18 13:10:01 +00:00 committed by Richard Biener
parent b696101130
commit a4293fa661
7 changed files with 36 additions and 6 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2012-05-18 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53346
* tree-loop-distribution.c (ldist_gen): Make sure to apply
builtin transform even when only a single partition with
all reads/writes exists.
2012-05-18 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53390

8
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,11 @@
2012-05-18 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53346
* gcc.dg/tree-ssa/ldist-18.c: New testcase.
* gcc.target/i386/incoming-10.c: Adjust.
* gcc.target/i386/incoming-11.c: Likewise.
* gcc.target/i386/pr46295.c: Likewise.
2012-05-18 Richard Guenther <rguenther@suse.de>
* gcc.dg/pr53352.c: Return zero.

12
gcc/testsuite/gcc.dg/tree-ssa/ldist-18.c Normal file
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@ -0,0 +1,12 @@
/* { dg-do compile } */
/* { dg-options "-O2 -ftree-loop-distribute-patterns -fdump-tree-ldist-details" } */
void foo (int *p, int n)
{
int i;
for (i = 0; i < n; ++i)
p[i] = 0;
}
/* { dg-final { scan-tree-dump "generated memset zero" "ldist" } } */
/* { dg-final { cleanup-tree-dump "ldist" } } */

2
gcc/testsuite/gcc.target/i386/incoming-10.c
View File

@ -12,7 +12,7 @@ void f()
{
int i;
struct s s;
for (i = 0; i < sizeof(s.x) / sizeof(*s.x); i++) s.x[i] = 0;
for (i = 0; i < sizeof(s.x) / sizeof(*s.x); i++) s.x[i] = 1;
g(&s);
}

4
gcc/testsuite/gcc.target/i386/incoming-11.c
View File

@ -10,9 +10,9 @@ int q[100];
void f()
{
int i;
for (i = 0; i < 100; i++) p[i] = 0;
for (i = 0; i < 100; i++) p[i] = 1;
g();
for (i = 0; i < 100; i++) q[i] = 0;
for (i = 0; i < 100; i++) q[i] = 1;
}
/* { dg-final { scan-assembler "andl\[\\t \]*\\$-16,\[\\t \]*%esp" } } */

2
gcc/testsuite/gcc.target/i386/pr46295.c
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@ -9,7 +9,7 @@ void Parse_Vector ()
EXPRESS Express;
int Terms;
for (Terms = 0; Terms < 5; Terms++)
Express[Terms] = 0.0;
Express[Terms] = 1.0;
Parse_Rel_Factor(Express,&Terms);
}

7
gcc/tree-loop-distribution.c
View File

@ -1131,8 +1131,11 @@ ldist_gen (struct loop *loop, struct graph *rdg,
BITMAP_FREE (processed);
nbp = VEC_length (bitmap, partitions);
if (nbp <= 1
|| partition_contains_all_rw (rdg, partitions))
if (nbp == 0
|| (nbp == 1
&& !can_generate_builtin (rdg, VEC_index (bitmap, partitions, 0)))
|| (nbp > 1
&& partition_contains_all_rw (rdg, partitions)))
goto ldist_done;
if (dump_file && (dump_flags & TDF_DETAILS))