OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR c/47892 (Fails to vectorize comparison code, if-conversion fails)

Browse Source 
2011-04-20  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/47892
	* tree-if-conv.c (if_convertible_stmt_p): Const builtins
	are if-convertible.

	* gcc.dg/vect/fast-math-ifcvt-1.c: New testcase.

From-SVN: r172774
This commit is contained in:
Richard Guenther 2011-04-20 15:50:26 +00:00 committed by Richard Biener
parent 9d12f71a54
commit d7978bff88
4 changed files with 45 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2011-04-20 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47892
* tree-if-conv.c (if_convertible_stmt_p): Const builtins
are if-convertible.
2011-04-20 Eric Botcazou <ebotcazou@adacore.com>
* config/alpha/vms.h (ASM_OUTPUT_ADDR_DIFF_ELT): Do not redefine.

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2011-04-20 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47892
* gcc.dg/vect/fast-math-ifcvt-1.c: New testcase.
2011-04-20 Richard Guenther <rguenther@suse.de>
PR middle-end/48695

18
gcc/testsuite/gcc.dg/vect/fast-math-ifcvt-1.c Normal file
View File

@ -0,0 +1,18 @@
/* PR 47892 */
/* { dg-do compile } */
/* { dg-require-effective-target vect_float } */
/* { dg-require-effective-target vect_condition } */
void
bestseries9 (float * __restrict__ arr, int len)
{
int i;
for (i = 0; i < len; ++i)
{
float or = arr[i];
arr[i] = (or > 0.0f) * (2 - or * or);
}
}
/* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" } } */
/* { dg-final { cleanup-tree-dump "vect" } } */

16
gcc/tree-if-conv.c
View File

@ -719,6 +719,22 @@ if_convertible_stmt_p (gimple stmt, VEC (data_reference_p, heap) *refs)
case GIMPLE_ASSIGN:
return if_convertible_gimple_assign_stmt_p (stmt, refs);
case GIMPLE_CALL:
{
tree fndecl = gimple_call_fndecl (stmt);
if (fndecl)
{
int flags = gimple_call_flags (stmt);
if ((flags & ECF_CONST)
&& !(flags & ECF_LOOPING_CONST_OR_PURE)
/* We can only vectorize some builtins at the moment,
so restrict if-conversion to those. */
&& DECL_BUILT_IN (fndecl))
return true;
}
return false;
}
default:
/* Don't know what to do with 'em so don't do anything. */
if (dump_file && (dump_flags & TDF_DETAILS))