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re PR target/84278 (claims initv4sfv2sf is available but inits through stack)

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2018-02-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84278
	* tree-vect-stmts.c (vectorizable_store): When looking for
	smaller vector types to perform grouped strided loads/stores
	make sure the mode is supported by the target.
	(vectorizable_load): Likewise.

	* gcc.target/i386/pr84278.c: New testcase.

From-SVN: r257483
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Richard Biener 2018-02-08 12:53:19 +00:00 • committed by Richard Biener
parent 3f26f05487
commit 414fef4e66
4 changed files with 35 additions and 0 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2018-02-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/84278
* tree-vect-stmts.c (vectorizable_store): When looking for
smaller vector types to perform grouped strided loads/stores
make sure the mode is supported by the target.
(vectorizable_load): Likewise.
2018-02-08 Wilco Dijkstra <wdijkstr@arm.com>
* config/aarch64/aarch64.c (aarch64_components_for_bb):

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-02-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/84278
* gcc.target/i386/pr84278.c: New testcase.
2018-02-08 Wilco Dijkstra <wdijkstr@arm.com>
PR rtl-optimization/84068

18
gcc/testsuite/gcc.target/i386/pr84278.c Normal file
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@ -0,0 +1,18 @@
/* { dg-do compile } */
/* { dg-options "-O3 -msse2" } */
float A[1024];
float B[1024];
int s;
void foo(void)
{
int i;
for (i = 0; i < 128; i++)
{
B[i*2+0] = A[i*s+0];
B[i*2+1] = A[i*s+1];
}
}
/* { dg-final { scan-assembler-not "\(%.sp\)" } } */

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

@ -6510,6 +6510,7 @@ vectorizable_store (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt,
machine_mode vmode;
if (!mode_for_vector (elmode, group_size).exists (&vmode)
|| !VECTOR_MODE_P (vmode)
|| !targetm.vector_mode_supported_p (vmode)
|| (convert_optab_handler (vec_extract_optab,
TYPE_MODE (vectype), vmode)
== CODE_FOR_nothing))
@ -6528,6 +6529,7 @@ vectorizable_store (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt,
element size stores. */
if (mode_for_vector (elmode, lnunits).exists (&vmode)
&& VECTOR_MODE_P (vmode)
&& targetm.vector_mode_supported_p (vmode)
&& (convert_optab_handler (vec_extract_optab,
vmode, elmode)
!= CODE_FOR_nothing))
@ -7573,6 +7575,7 @@ vectorizable_load (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt,
machine_mode vmode;
if (mode_for_vector (elmode, group_size).exists (&vmode)
&& VECTOR_MODE_P (vmode)
&& targetm.vector_mode_supported_p (vmode)
&& (convert_optab_handler (vec_init_optab,
TYPE_MODE (vectype), vmode)
!= CODE_FOR_nothing))
@ -7598,6 +7601,7 @@ vectorizable_load (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt,
element loads of the original vector type. */
if (mode_for_vector (elmode, lnunits).exists (&vmode)
&& VECTOR_MODE_P (vmode)
&& targetm.vector_mode_supported_p (vmode)
&& (convert_optab_handler (vec_init_optab, vmode, elmode)
!= CODE_FOR_nothing))
{