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tree-vect-stmts.c (vectorizable_shift): Add missed test on vect_induction_def.

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gcc/

	* tree-vect-stmts.c (vectorizable_shift): Add missed test on
	vect_induction_def.

gcc/testsuite:

	* gcc.target/i386/avx2-vect-shift.c: New test.

From-SVN: r226781
This commit is contained in:
Yuri Rumyantsev 2015-08-11 13:52:17 +00:00 • committed by Ilya Enkovich
parent b32bc1ac16
commit dbfa87aa87
4 changed files with 28 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-08-11 Yuri Rumyantsev <ysrumyan@gmail.com>
* tree-vect-stmts.c (vectorizable_shift): Add missed test on
vect_induction_def.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2015-08-11 Yuri Rumyantsev <ysrumyan@gmail.com>
* gcc.target/i386/avx2-vect-shift.c: New test.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098

16
gcc/testsuite/gcc.target/i386/avx2-vect-shift.c Normal file
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@ -0,0 +1,16 @@
/* { dg-do compile } */
/* { dg-require-effective-target avx2 } */
/* { dg-options "-mavx2 -O3 -fdump-tree-vect-details" } */
#define N 32
typedef unsigned int u32;
u32 a[N];
void foo()
{
int i;
for (i=0; i<N;i++)
a[i] = 1 << i;
}
/* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" } } */
/* { dg-final { cleanup-tree-dump "vect" } } */

4
gcc/tree-vect-stmts.c
View file

@ -4461,7 +4461,9 @@ vectorizable_shift (gimple stmt, gimple_stmt_iterator *gsi,
/* Determine whether the shift amount is a vector, or scalar. If the
shift/rotate amount is a vector, use the vector/vector shift optabs. */
if (dt[1] == vect_internal_def && !slp_node)
if ((dt[1] == vect_internal_def
|| dt[1] == vect_induction_def)
&& !slp_node)
scalar_shift_arg = false;
else if (dt[1] == vect_constant_def
|| dt[1] == vect_external_def